Edgar Filing: American Capital Agency Corp

Form 10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2011

¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 001-34057

LOGO

AMERICAN CAPITAL AGENCY CORP.

(Exact name of registrant as specified in its charter)

Delaware

26-1701984

(State or Other Jurisdiction of

Incorporation or Organization)

(I.R.S. Employer

Identification No.)

2 Bethesda Metro Center, 14th Floor

Bethesda, Maryland 20814

(Address of principal executive offices)

(301) 968-9300

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter earlier period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.


Large accelerated filer	x		Accelerated filer	¨

Non-accelerated filer	¨	(Do not check if a smaller reporting company)	Smaller Reporting Company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x

The number of shares of the issuer’s common stock, $0.01 par value, outstanding as of July 31, 2011 was 178,511,759

AMERICAN CAPITAL AGENCY CORP.

TABLE OF CONTENTS


PART I. FINANCIAL INFORMATION

Item 1.	Financial Statements	2
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	45
Item 4.	Controls and Procedures	47

PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	48
Item 1A.	Risk Factors	48
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	50
Item 3.	Defaults Upon Senior Securities	50
Item 4.	Removed and Reserved	50
Item 5.	Other Information	50
Item 6.	Exhibits	51

Signatures

ITEM 1.

Financial Statements

AMERICAN CAPITAL AGENCY CORP.

CONSOLIDATED BALANCE SHEETS

(in thousands, except per share data)


	June 30, 2011		December 31, 2010
	(Unaudited)
Assets:
Agency securities, at fair value (including pledged assets of $35,117,998 and $12,270,909, respectively)	$	39,925,707	$	13,510,280
Cash and cash equivalents		625,850		173,258
Restricted cash		188,772		76,094
Interest receivable		139,265		56,485
Derivative assets, at fair value		86,064		76,593
Receivable for agency securities sold		1,251,624		258,984
Principal payments receivable		29,254		75,524
Receivable under reverse repurchase agreements		1,388,188		247,438
Other assets		1,846		1,173

Total assets	$	43,636,570	$	14,475,829

Liabilities:
Repurchase agreements	$	33,505,142	$	11,680,092
Other debt		61,757		72,927
Payable for agency securities purchased		3,336,485		727,374
Derivative liabilities, at fair value		290,286		78,590
Dividend payable		180,360		90,798
Obligation to return securities borrowed under reverse repurchase agreements, at fair value		1,459,298		245,532
Accounts payable and other accrued liabilities		26,596		8,452

Total liabilities		38,859,924		12,903,765

Stockholders’ equity:
Preferred stock, $0.01 par value; 10,000 shares authorized, 0 shares issued and outstanding, respectively		—		—
Common stock, $0.01 par value; 300,000 and 150,000 shares authorized, 178,509 and 64,856 shares issued and outstanding, respectively		1,785		649
Additional paid-in capital		4,682,070		1,561,908
Retained earnings		73,841		78,116
Accumulated other comprehensive income (loss)		18,950		(68,609	)

Total stockholders’ equity		4,776,646		1,572,064

Total liabilities and stockholders’ equity	$	43,636,570	$	14,475,829

See accompanying notes to consolidated financial statements.

AMERICAN CAPITAL AGENCY CORP.

CONSOLIDATED STATEMENTS OF OPERATIONS

AND COMPREHENSIVE INCOME

(Unaudited)

(in thousands, except per share data)


	For the three months ended June 30,						For the six months ended June 30,
	2011			2010			2011			2010
Interest income:
Interest income	$	264,728		$	50,589		$	429,221		$	89,386
Interest expense		63,816			17,348			99,464			32,858

Net interest income		200,912			33,241			329,757			56,528

Other (loss) income, net:
Gain on sale of agency securities, net		93,892			29,585			98,112			56,993
Loss on derivative instruments and trading securities, net		(100,013	)		(21,867	)		(88,484	)		(15,947	)

Total other (loss) income, net		(6,121	)		7,718			9,628			41,046

Expenses:
Management fees		12,423			2,314			20,877			4,098
General and administrative expenses		4,546			1,787			7,143			3,468

Total expenses		16,969			4,101			28,020			7,566

Net income	$	177,822		$	36,858		$	311,365		$	90,008

Net income per common share—basic and diluted	$	1.36		$	1.23		$	2.82		$	3.28

Weighted average number of common shares outstanding—basic and diluted		130,467			29,872			110,496			27,451

Dividends declared per common share	$	1.40		$	1.40		$	2.80		$	2.80

Comprehensive income:
Net income	$	177,822		$	36,858		$	311,365		$	90,008

Other comprehensive income:
Unrealized gain on available-for-sale securities, net		318,899			59,484			279,097			61,417
Unrealized loss on derivative instruments, net		(252,664	)		(38,906	)		(191,538	)		(52,382	)

Other comprehensive income		66,235			20,578			87,559			9,035

Comprehensive income	$	244,057		$	57,436		$	398,924		$	99,043

See accompanying notes to consolidated financial statements.

AMERICAN CAPITAL AGENCY CORP.

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

(in thousands)


	Preferred Stock				Common Stock				Additional Paid-in Capital		Retained Earnings			Accumulated Other Comprehensive (Loss) Income			Total
	Shares		Amount		Shares		Amount		Additional Paid-in Capital		Retained Earnings			Accumulated Other Comprehensive (Loss) Income			Total
Balance, December 31, 2010		—	$	—		64,856	$	649	$	1,561,908	$	78,116		$	(68,609	)	$	1,572,064
Net income		—		—		—		—		—		133,543			—			133,543
Other comprehensive income (loss):
Unrealized loss on available- for-sale securities, net		—		—		—		—		—		—			(39,802	)		(39,802	)
Unrealized gain on designated derivative instruments, net		—		—		—		—		—		—			61,126			61,126
Issuance of common stock		—		—		63,964		639		1,752,173		—			—			1,752,812
Issuance of restricted stock		—		—		9		—		—		—			—			—
Stock-based compensation		—		—		—		—		38		—			—			38
Common dividends declared		—		—		—		—		—		(135,280	)		—			(135,280	)

Balance, March 31, 2011 (Unaudited)		—		—		128,829		1,288		3,314,119		76,379			(47,285	)		3,344,501
Net income		—		—		—		—		—		177,822			—			177,822
Other comprehensive income (loss):
Unrealized gain on available- for-sale securities, net		—		—		—		—		—		—			318,899			318,899
Unrealized loss on derivative instruments, net		—		—		—		—		—		—			(252,664	)		(252,664	)
Issuance of common stock		—		—		49,680		497		1,367,907		—			—			1,368,404
Stock-based compensation		—		—		—		—		44		—			—			44
Common dividends declared		—		—		—		—		—		(180,360	)		—			(180,360	)

Balance, June 30, 2011 (Unaudited)		—	$	—		178,509	$	1,785	$	4,682,070	$	73,841		$	18,950		$	4,776,646

See accompanying notes to consolidated financial statements.

AMERICAN CAPITAL AGENCY CORP.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)


	For the six months ended June 30,
	2011			2010
Operating activities:
Net income	$	311,365		$	90,008
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of agency securities premiums and discounts, net		126,942			35,192
Amortization of interest rate swap termination fee		—			6,278
Stock-based compensation		82			42
Gain on sale of agency securities, net		(98,112	)		(56,993	)
Loss on derivative instruments and trading securities, net		88,484			15,947
Increase in interest receivable		(82,780	)		(13,060	)
Increase in other assets		(673	)		(382	)
Increase (decrease) in accounts payable and other accrued liabilities		18,144			(1,263	)

Net cash provided by operating activities		363,452			75,769

Investing activities:
Purchases of agency securities		(37,811,048	)		(8,191,504	)
Proceeds from sale of agency securities		11,489,300			4,534,061
Purchases of trading securities		(3,021,675	)		(279,164	)
Proceeds from sale of trading securities		3,050,224			280,607
Proceeds from U.S. Treasury securities sold, not yet purchased		8,552,609			—
Purchase of U.S. Treasury securities sold, not yet purchased		(7,338,951	)		—
Proceeds from reverse repurchase agreements		15,920,855			—
Payments made on reverse repurchase agreements		(17,061,605	)		—
Net proceeds from (payments on) other derivative instruments not designated as qualifying hedges		(109,274	)		(6,122	)
Principal collections on agency securities		1,822,367			599,776

Net cash used in investing activities		(24,507,198	)		(3,062,346	)

Financing activities:
Cash dividends paid		(226,079	)		(71,515	)
Increase in restricted cash		(112,678	)		(18,249	)
Proceeds from repurchase arrangements, net		21,825,050			2,792,508
Repayments on other debt		(11,170	)		—
Net proceeds from common stock issuances		3,121,215			231,111

Net cash provided by financing activities		24,596,338			2,933,855

Net change in cash and cash equivalents		452,592			(52,722	)
Cash and cash equivalents at beginning of period		173,258			202,803

Cash and cash equivalents at end of period	$	625,850		$	150,081

See accompanying notes to consolidated financial statements.

AMERICAN CAPITAL AGENCY CORP.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1. Unaudited Interim Consolidated Financial Statements

The interim consolidated financial statements of American Capital Agency Corp. (together with its consolidated subsidiary, is referred throughout this report as the “Company”, “we”, “us” and “our”) are prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates.

Our unaudited consolidated financial statements include the accounts of our wholly-owned subsidiary, American Capital Agency TRS, LLC, and variable interest entities for which the Company is the primary beneficiary. Significant intercompany accounts and transactions have been eliminated. In the opinion of management, all adjustments, consisting solely of normal recurring accruals, necessary for the fair presentation of financial statements for the interim period have been included. The current period’s results of operations are not necessarily indicative of results that ultimately may be achieved for the year. Through June 30, 2011, there has been no activity in American Capital Agency TRS, LLC.

Note 2. Organization

We were organized in Delaware on January 7, 2008, and commenced operations on May 20, 2008 following the completion of our initial public offering (“IPO”). Our common stock is traded on The NASDAQ Global Select Market under the symbol “AGNC”.

We have elected to be taxed as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Code”). As such, we are required to distribute annually 90% of our taxable net income. As long as we qualify as a REIT, we will generally not be subject to U.S. federal or state corporate taxes on our taxable net income to the extent that we distribute all of our annual taxable net income to our stockholders. We are externally managed by American Capital AGNC Management, LLC (our “Manager”), an affiliate of American Capital, Ltd. (“American Capital”).

We earn income primarily from investing in residential mortgage pass-through securities and collateralized mortgage obligations (“CMOs”) on a leveraged basis. These investments consist of securities for which the principal and interest payments are guaranteed by government-sponsored entities (“GSEs”), such as the Federal National Mortgage Association (“Fannie Mae”) and the Federal Home Loan Mortgage Corporation (“Freddie Mac”), or by a U.S. Government agency, such as the Government National Mortgage Association (“Ginnie Mae”). We refer to these types of securities as agency securities and the specific agency securities in which we invest as our investment portfolio.

Our principal objective is to preserve our net asset value while generating attractive risk-adjusted returns for distribution to our stockholders through regular quarterly dividends from our net interest income, which is the spread between the interest income earned on our interest earning assets and the interest costs of our borrowings and hedging activities, and net realized gains and losses on our investments and other supplemental hedging activities. We fund our investments primarily through short-term borrowings structured as repurchase agreements.

Note 3. Summary of Significant Accounting Policies

Investments in Agency Securities

Accounting Standards Codification (“ASC”) Topic 320, Investments—Debt and Equity Securities (“ASC 320”), requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Securities classified as trading and available-for-sale are reported at fair value, while securities classified as held-to-maturity are reported at amortized cost. We may, from time to time, sell any of our agency securities as part of our overall management of our investment portfolio. Accordingly, we typically designate our agency securities as available-for-sale. All securities classified as available-for-sale are reported at fair value, with unrealized gains and losses reported in other comprehensive income (loss) (“OCI”), a component of stockholders’ equity. Upon the sale of a security, we determine the cost of the security and the amount of unrealized gains or losses to reclassify out of accumulated OCI into earnings based on the specific identification method.

Interest-only securities and inverse interest-only securities (collectively referred to as “interest-only securities”) represent our right to receive a specified proportion of the contractual interest flows of specific agency and CMO securities. Principal-only securities represent our right to receive the contractual principal flows of specific agency and CMO securities. Interest-only and principal-only securities are measured at fair value through earnings in gain (loss) on derivative instruments and trading securities, net in our consolidated statements of operations and comprehensive income. Our investments in interest-only and principal-only securities are included in agency securities, at fair value on the accompanying consolidated balance sheets.

We estimate the fair value of our agency securities based on a market approach using Level 2 inputs from third-party pricing services and dealer quotes. The third-party pricing services use pricing models that incorporate such factors as coupons, primary and secondary mortgage rates, prepayment speeds, spread to the Treasury and interest rate swap curves, convexity, duration, periodic and life caps and credit enhancements. The dealer quotes incorporate common market pricing methods, including a spread measurement to the Treasury or interest rate swap curve as well as underlying characteristics of the particular security including coupon, periodic and life caps, rate reset period, issuer, additional credit support and expected life of the security.

We evaluate securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market conditions warrant such evaluation. Based on the criteria in ASC 320, the determination of whether a security is other-than-temporarily impaired involves judgments and assumptions based on subjective and objective factors. When an agency security is impaired, an OTTI is considered to have occurred if (i) we intend to sell the agency security (i.e. a decision has been made as the reporting date) or (ii) it is more likely than not that we will be required to sell the agency security before recovery of its amortized cost basis. If we intend to sell the security or if it is more likely than not that we will be required to sell the agency security before recovery of its amortized cost basis, the entire amount of the impairment loss, if any, is recognized in earnings as a realized loss and the cost basis of the security is adjusted to its fair value.

We did not recognize any OTTI charges on any of our agency securities for six months ended June 30, 2011 and 2010.

Interest Income

Interest income is accrued based on the outstanding principal amount of the agency securities and their contractual terms. Premiums and discounts associated with the purchase of agency securities are amortized or accreted into interest income over the projected lives of the securities, including contractual payments and estimated prepayments using the interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs (“ASC 310-20”).

We estimate long-term prepayment speeds using a third-party service and market data. The third-party service estimates prepayment speeds using models that incorporate the forward yield curve, current mortgage rates, current mortgage rates of the outstanding loans, loan age, volatility and other factors. We review the

prepayment speeds estimated by the third-party service and compare the results to market consensus prepayment speeds, if available. We also consider historical prepayment speeds and current market conditions to validate the reasonableness of the prepayment speeds estimated by the third-party service and based on our Manager’s judgment we may make adjustments to their estimates. Actual and anticipated prepayment experience is reviewed quarterly and effective yields are recalculated when differences arise between the previously estimated future prepayments and the amounts actually received plus current anticipated future prepayments. If the actual and anticipated future prepayment experience differs from our prior estimate of prepayments, we are required to record an adjustment in the current period to the amortization or accretion of premiums and discounts for the cumulative difference in the effective yield through the reporting date.

In addition, pursuant to ASC 310-20, the yield on our adjustable rate securities assumes that the securities reset at a rate equal to the underlying index rate in effect as of the date we acquired the security plus the stated margin. Consequently, future reset rate assumptions incorporated in our asset yields may differ materially from future reset rates implied by the forward yield curve and the actual reset rates ultimately achieved. Further, notwithstanding changes to our actual and projected constant prepayment rate (“CPR”) assumptions, the lower our reset rate assumption is pursuant to ASC 310-20 than the current fixed rate in effect, the greater the rate of premium amortization we will recognize over the initial fixed rate period.

Our adjustable rate portfolio was acquired for a premium above par value and most securities were acquired during a period of historically low index rates. Accordingly, the majority of the premium balance on our adjustable rate securities will be amortized prior to their first reset date, regardless of actual or forecasted prepayment speeds and changes in the underlying index rates prior to actual reset. Adjustable rate securities acquired during a different interest rate environment may experience a different premium amortization pattern even as current index rates remain near their historical lows.

Derivative and other Hedging Instruments

We maintain a risk management strategy, under which we use a variety of strategies to hedge some of our exposure to interest rate risk. The objective of our risk management strategy is to reduce fluctuations in book value and generate additional income distributable to stockholders. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The principal instruments that we use are interest rate swaps and options to enter into interest rate swaps (“interest rate swaptions”). We also purchase or sell to-be-announced forward contracts (“TBAs”), forward contracts for specified agency securities, U.S. Treasury securities and U.S. Treasury futures contracts, purchase or write put or call options on TBA securities and invest in other types of mortgage derivatives, such as interest-only securities, and synthetic total return swaps, such as the Markit IOS Synthetic Total Return Swap Index (“Markit IOS Index”).

We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging (“ASC 815”). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in the balance sheet and to measure those instruments at fair value. Hedging instruments that are not derivatives under ASC 815 are accounted for in accordance with ASC 320.

The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the resulting designation. Derivatives that are intended to hedge exposure to variability in expected future cash flows are considered cash flow hedges. For derivatives designated in qualifying cash flow hedging relationships, the effective portion of the fair value adjustments is initially recorded in OCI (a component of stockholders’ equity) and reclassified to income at the time that the hedged transactions affect earnings. The ineffective portion of the fair value adjustments is immediately recognized in gain (loss) on derivative instruments and trading securities, net. When the underlying hedged transaction ceases to exist, any amounts that have been previously recorded in accumulated OCI would be reclassified to net income and all subsequent changes in the fair value of the instrument would be included in gain (loss) on derivative instruments and trading securities, net for each period until the derivative instrument matures or is settled. For derivatives not designated in hedging

relationships under ASC 815, the fair value adjustments are recorded in gain (loss) on derivative instruments and trading securities, net. Derivatives in a gain position are reported as derivative assets at fair value and derivatives in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. In our consolidated statements of cash flows, cash receipts and payments related to derivative instruments are classified according to the underlying nature or purpose of the derivative transaction, generally in the operating section for derivatives designated in hedging relationships and the investing section for derivatives not designated in hedging relationships.

The use of derivatives creates exposure to credit risk relating to potential losses that could be recognized in the event that the counterparties to these instruments fail to perform their obligations under the contracts. We attempt to minimize this risk by limiting our counterparties to major financial institutions with acceptable credit ratings and monitoring positions with individual counterparties.

Interest rate swap agreements

We use interest rate swaps to hedge the variable cash flows associated with short-term borrowings made under our repurchase agreement facilities. We generally enter into such derivatives with the intention of qualifying for hedge accounting under ASC 815.

We estimate the fair value of interest rate swaps based on inputs from a third-party pricing model. The third-party pricing model incorporates such factors as the Treasury curve, LIBOR rates, and the pay rate on the interest rate swaps. We also incorporate both our own and our counterparties’ nonperformance risk in estimating the fair value of our interest rate swap and swaption agreements. In considering the effect of nonperformance risk, we consider the impact of netting and credit enhancements, such as collateral postings and guarantees, and have concluded that our own and our counterparty risk is not significant to the overall valuation of these agreements.

Interest rate swaptions

We may purchase interest rate swaptions to help mitigate the potential impact of increases or decreases in interest rates on the performance of our investment portfolio (referred to as “convexity risk”). The interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. The premium paid for interest rate swaptions is reported as an asset in our consolidated balance sheets. The premium is valued at an amount equal to the fair value of the swaption that would have the effect of closing the position adjusted for nonperformance risk, if any. The difference between the premium and the fair value of the swaption is reported in gain (loss) on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive income. If a swaption expires unexercised, the loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap received and the premium paid.

We estimate the fair value of interest rate swaptions based on the fair value of the future interest rate swap that we have the option to enter into as well as the remaining length of time that we have to exercise the option.

TBA securities

A TBA security is a futures contract for the purchase or sale of agency securities at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific agency securities delivered into the contract upon the settlement date, published each month by the Securities Industry and Financial Markets Association, are not known at the time of the transaction. TBA securities are exempt from ASC 815 and are accounted for under ASC 320 if there is no other way to purchase or sell that security, if delivery of that security and settlement will occur within the shortest period possible for that type of security and if it is probable at inception and throughout the term of the individual contract that physical delivery of the

security will occur (referred to as the “regular-way” exception). Alternatively, we may designate the TBA security as a qualifying cash flow hedge under ASC 815 if the regular-way exception is not met and at the time of the purchase or sale of the security, and throughout the term of the individual contract, it is probable that the forecasted transaction will occur and the hedging relationship is expected to be highly effective. For TBA security contracts that we have entered into, we have generally not asserted that physical settlement is probable or that the forecasted transaction is probable of occurring and, therefore, we typically have not designated these forward commitments as hedging instruments. Realized and unrealized gains and losses associated with TBA contracts not subject to the regular-way exception or not designated as hedging instruments are recognized in our consolidated statement of operations and comprehensive income in the line item gain (loss) on derivative instruments and trading securities, net.

We estimate the fair value of TBA securities based on similar methods used to value agency securities.

Put and call options on TBA securities

We may purchase put and call options on TBA securities to hedge against short-term changes in interest rates. Under a purchased put option, we have the right to sell to the counterparty a specified TBA security at a predetermined price on the option exercise date in exchange for a premium at execution. Under a purchased call option, we have the right to purchase from the counterparty a specified TBA security at a predetermined price on the option exercise date in exchange for a premium at execution. The premium paid for a put or call option is reported as an asset in our consolidated balance sheets. The premium is valued at an amount equal to the fair value of the option that would have the effect of closing the position adjusted for nonperformance risk, if any. The difference between the premium and the fair value of the option is reported in gain (loss) on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive income. When a purchased put or call option expires unexercised, a realized loss is reported in our consolidated statement of operations and comprehensive income equal to the premium paid. When a purchased put or call option is exercised, a realized gain or loss is reported in our consolidated statement of operations and comprehensive income equal to the difference between the premium paid and the fair value of the exercised put or call option. In addition, a derivative asset is recorded in our consolidated balance sheet for the TBA security resulting from the put or call option exercise.

We may also write put and call options on TBA securities. Under a written put option, the counterparty has the right to sell us a specified TBA security at a predetermined price on the option exercise date in exchange for a premium at execution. Under a written call option, the counterparty has the right to purchase from us a specified TBA security at a predetermined price on the option exercise date in exchange for a premium at execution. The premium received from writing a put or call option is reported as a liability in our consolidated balance sheets. The premium is valued at an amount equal to the fair value of the option that would have the effect of closing the position adjusted for nonperformance risk, if any. The difference between the premium and the fair value of the option is reported in gain (loss) on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive income. When a written put or call option expires unexercised, a realized gain is reported in our consolidated statement of operations equal to the premium received. When we terminate a written put or call option, a realized gain or loss is reported in our consolidated statement of operations equal to the difference between the termination payment and the premium received. When a written put or call option is exercised, a realized gain or loss is reported in our consolidated statement of operations equal to the difference between the premium received and the fair value of the exercised put or call option. In addition, a derivative asset or liability is recorded in our consolidated balance sheet for the TBA security resulting from the put or call option exercise.

We estimate the fair value of put and call options on TBA securities based on the fair value of the underlying TBA security as well as the remaining length of time to exercise the option.

Forward commitments to purchase or sell specified agency securities

We may enter into a forward commitment to purchase or sell specified agency securities as a means of acquiring assets or as a hedge against short-term changes in interest rates. Contracts for the purchase or sale of specified agency securities are accounted for as derivatives if the delivery of the specified agency security and settlement extends beyond the shortest period possible for that type of security. We may designate the forward commitment as a qualifying cash flow hedge if at the time of the purchase or sale of the security, and throughout the term of the individual contract, it is probable that physical delivery of the security will occur. Realized and unrealized gains and losses associated with forward commitments not designated as hedging instruments are recognized in our consolidated statement of operations and comprehensive income in the line item gain (loss) on derivative instruments and trading securities, net.

We estimate the fair value of forward commitments to purchase or sell specified agency securities based on similar methods used to value agency securities as well as the remaining length of time of the forward commitment.

U.S. Treasury securities

We may purchase or sell short U.S. Treasury securities and U.S. Treasury futures contracts to help mitigate the potential impact of changes in interest rates on the performance of our portfolio. We may borrow securities to cover short sales of U.S. Treasury securities under reverse repurchase agreements. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on the balance sheet based on the value of the underlying borrowed securities as of the reporting date. Realized and unrealized gains and losses associated with purchases and short sales of U.S. Treasury securities are recognized in gains (losses) on derivative instruments and trading securities, net in our consolidated statements of operations and comprehensive income.

Total return swaps

We may enter into total return swaps to obtain exposure to a security or market sector without owning such security or investing directly in that market sector. Total return swaps are agreements in which there is an exchange of cash flows whereby one party commits to make payments based on the total return (coupon plus the mark-to-market movement) of an underlying instrument or index in exchange for fixed or floating rate interest payments. To the extent the total return of the instrument or index underlying the transaction exceeds or falls short of the offsetting interest rate obligation, we will receive a payment from or make a payment to the counterparty.

The primary total return swap index in which we invest is the Markit IOS Index. Total return swaps based on the Markit IOS index are intended to synthetically replicate the performance of interest-only securities. We determine the fair value of our total return swaps based on published index prices. Realized and unrealized gains and losses associated with changes in market value of the underlying index and coupon interest are recognized in gain (loss) on derivative instruments and trading securities, net in our consolidated statements of operations and comprehensive income.

Variable Interest Entities

ASC Topic 810, Consolidation (“ASC 810”), requires a qualitative assessment in determining the primary beneficiary of a variable interest entities (“VIEs”) and ongoing assessments of control over such entities as well as additional disclosures for entities that have variable interests in VIEs.

We may enter into transactions involving a CMO trust (e.g. a VIE) whereby we transfer agency securities to an investment bank in exchange for cash proceeds and at the same time enter into a commitment with the same investment bank to purchase to-be-issued securities collateralized by the agency securities transferred. We will consolidate a CMO trust (as it relates to the assets transferred or contributed by us and the related liabilities issued by the trust) if we are the CMO trust’s primary beneficiary; that is, if we have a variable interest (or

combination of variable interests) that provides us with a controlling financial interest in the CMO trust. An entity is deemed to have a controlling financial interest if the entity has the power to direct the activities of a VIE that most significantly impacts the VIE’s economic performance and the obligation to absorb losses of or right to receive benefits from the VIE that could potentially be significant to the VIE. In determining if we have a controlling financial interest, we evaluate whether we share the power to control the selection of financial assets transferred to the CMO trust with an unrelated party. We may share power in the selection of assets for certain CMO trusts (i.e., both we and the unrelated party must consent to the transfer of such assets to the CMO trust); however, if our economic interest in the CMO trust is disproportionate to the shared power, we may be deemed to be the primary beneficiary.

Recent Accounting Pronouncements

In April 2011, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2011-03, Transfers and Servicing (Topic 860): Reconsideration of Effective Control for Repurchase Agreements (“ASU 2011-03”), which is intended to improve the accounting for repurchase agreements by removing from the assessment of effective control the criterion requiring the transferor to have the ability to repurchase or redeem the financial assets on substantially the agreed terms, even in the event of default by the transferee, as well as implementation guidance related to that criterion. ASU 2011-03 is effective for the first interim or annual period beginning on or after December 15, 2011 and the guidance should be applied prospectively to transactions or modifications of existing transactions that occur on or after the effective date. Early adoption is not permitted. We do not believe the adoption of ASU 2011-03 will have a material impact on our consolidated financial statements.

In May 2011, the FASB issued ASU No. 2011-04, Fair Value Measurement (Topic 820): Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRSs (“ASU 2011-04”) which largely aligns fair value measurement and disclosure requirements between International Financial Reporting Standards and US GAAP. For US GAAP, the update mainly represents clarifications to Topic 820 as well as some instances where a particular principle or requirement for measuring fair value or disclosing information about fair value measurements has changed. ASU 2011-04 clarifies that (i) the highest and best use concept only applies to nonfinancial assets (ii) an instrument classified in shareholders’ equity should be measured from the perspective of a market participant holding that instrument as an asset and (iii) quantitave disclosure is required for unobservable inputs used in Level 3 measurements. ASU 2011-04 changes the guidance in Topic 820 so that (i) the fair value of a group of financial assets and financial liabilities with similar risk exposures may be measured on the basis of the entity’s net risk exposure (ii) premiums or discounts may be applied in a fair value measurement under certain circumstances but blockage factors are not permitted and (iii) additional Level 3 disclosures are required, including a narrative description of the sensitivity of the fair value measurement to changes in unobservable inputs. ASU 2011-04 is effective for interim and annual periods beginning after December 15, 2011. Early application by public entities is not permitted. We do not believe the adoption of ASU 2011-04 will have a material impact on our consolidated financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”), which is intended to make the presentation of items within OCI more prominent. ASU 2011-05 requires companies to present comprehensive income in either one continuous statement or two separate but consecutive financial statements. Upon the effectiveness of ASU 2011-05, companies will no longer be allowed to present OCI in the statement of stockholders’ equity. In addition, reclassification adjustments between OCI and net income must be presented seperately on the face of the financial statements. The new guidance does not change the components of OCI or the calculation of earnings per share. ASU 2011-05 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. Early adoption is permitted and the amendments should be applied retrospectively. We do not believe the adoption of ASU 2011-05 will have a material impact on our consolidated financial statements.

Reclassifications

Certain prior period amounts in the consolidated financial statements have been reclassified to conform to the current period presentation.

Note 4. Agency Securities

The following tables summarize our investments in agency securities as of June 30, 2011 (dollars in thousands):


	As of June 30, 2011
	Fannie Mae			Freddie Mac			Ginnie Mae			Total
Available-for-sale securities:
Agency securities, par	$	23,109,832		$	14,729,370		$	107,989		$	37,947,191
Unamortized discount		(989	)		(1,074	)		—			(2,063	)
Unamortized premium		915,068			563,089			4,227			1,482,384

Amortized cost		24,023,911			15,291,385			112,216			39,427,512
Gross unrealized gains		219,434			113,221			1,613			334,268
Gross unrealized losses		(51,171	)		(31,926	)		(20	)		(83,117	)

Available-for-sale securities, at fair value		24,192,174			15,372,680			113,809			39,678,663

Agency securities remeasured at fair value through earnings:
Interest-only and principal-only securities, amortized cost(1)		154,706			84,940			—			239,646
Gross unrealized gains		5,879			5,975			—			11,854
Gross unrealized losses		(2,160	)		(2,296	)		—			(4,456	)

Agency securities measured at fair value through earnings, at fair value		158,425			88,619			—			247,044

Total agency securities, at fair value	$	24,350,599		$	15,461,299		$	113,809		$	39,925,707

Weighted average coupon as of June 30, 2011(2)		4.47	%		4.39	%		4.16	%		4.44	%
Weighted average yield as of June 30, 2011(3)		3.44	%		3.47	%		2.15	%		3.45	%
Weighted average yield for the three months ended
June 30, 2011(3)		3.36	%		3.35	%		2.15	%		3.35	%

(1)

Interest-only securities represent the right to receive a specified portion of the contractual interest flows of the underlying unamortized principal balance (“UPB” or “par value”) of specific CMO securities. Principal-only securities represent the right to receive contractual principal flows of the UPB of specific CMO securities. The UPB of our interest-only securities was $1.3 billion and the weighted average contractual interest we are entitled to receive was 5.58% of this amount as of June 30, 2011. The UPB of our principal-only securities was $46 million as of June 30, 2011.

(2)

The weighted average coupon includes the interest cash flows from our interest-only securities taken together with the interest cash flows from our fixed-rate, adjustable-rate and CMO securities as a percentage of the par value of our agency securities (excluding the UPB of our interest-only securities) as of June 30, 2011.

(3)

Incorporates an average future constant prepayment rate assumption of 10% based on forward rates as of June 30, 2011 and an average reset rate for adjustable rate securities of 2.72%, which is equal to the average underlying index rate of 0.91% based on the current spot rate in effect as of the date we acquired the securities and an average margin of 1.81%.


	As of June 30, 2011
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Fixed-Rate	$	34,605,297	$	274,763	$	(79,436	)	$	34,800,624
Adjustable-Rate		4,563,144		53,477		(3,681	)		4,612,940
CMO		259,071		6,028		—			265,099
Interest-only and principal-only securities		239,646		11,854		(4,456	)		247,044

Total agency securities	$	39,667,158	$	346,122	$	(87,573	)	$	39,925,707

The following tables summarize our investments in agency securities as of December 31, 2010 (dollars in thousands):


	As of December 31, 2010
	Fannie Mae			Freddie Mac			Ginnie Mae			Total
Agency securities classified as available-for-sale:
Agency securities, par	$	8,207,464		$	4,599,712		$	100,408		$	12,907,584
Unamortized discount		(930	)		(1,044	)		—			(1,974	)
Unamortized premium		350,747			220,465			4,670			575,882

Amortized cost		8,557,281			4,819,133			105,078			13,481,492
Gross unrealized gains		56,181			11,929			384			68,494
Gross unrealized losses		(53,893	)		(42,356	)		(196	)		(96,445	)

Available-for-sale securities, at fair value		8,559,569			4,788,706			105,266			13,453,541

Agency securities remeasured at fair value through earnings:
Interest-only securities, amortized cost(1)		18,957			33,447			—			52,404
Gross unrealized gains		1,559			3,356			—			4,915
Gross unrealized losses		(91	)		(489	)		—			(580	)

Agency securities measured at fair value through earnings, at fair value		20,425			36,314			—			56,739

Total agency securities, at fair value	$	8,579,994		$	4,825,020		$	105,266		$	13,510,280

Weighted average coupon as of December 31, 2010(2)		4.63	%		4.83	%		4.37	%		4.70	%
Weighted average yield as of December 31, 2010(3)		3.34	%		3.28	%		2.14	%		3.31	%
Weighted average yield for the year ended December 31, 2010(3)		3.49	%		3.42	%		2.22	%		3.44	%

(1)

Interest-only securities represent the right to receive a specified portion of the contractual interest flows of the UPB of specific CMO securities. The UPB of our interest-only securities was $0.5 billion and the weighted average contractual interest we are entitled to receive was 4.95% of this amount as of December 31, 2010.

(2)

(3)

Incorporates an average future constant prepayment rate assumption of 12% based on forward rates as of December 31, 2010 and an average reset rate for adjustable rate securities of 2.76%, which is equal to the average underlying index rate of 0.94% based on the current spot rate in effect as of the date we acquired the securities and an average margin of 1.82%.


	As of December 31, 2010
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Fixed-Rate	$	9,144,352	$	39,844	$	(82,717	)	$	9,101,479
Adjustable-Rate		3,942,937		20,955		(13,728	)		3,950,164
CMO		394,203		7,695		—			401,898
Interest-only securities		52,404		4,915		(580	)		56,739

Total agency securities	$	13,533,896	$	73,409	$	(97,025	)	$	13,510,280

Actual maturities of agency securities are generally shorter than the stated contractual maturities. Actual maturities are affected by the contractual lives of the underlying mortgages, periodic principal payments and principal prepayments. The following table summarizes our agency securities classified as available-for-sale as of June 30, 2011 and December 31, 2010, according to their estimated weighted average life classification (dollars in thousands):


	As of June 30, 2011							As of December 31, 2010
Weighted Average Life	Fair Value		Amortized Cost		Weighted Average Coupon			Fair Value		Amortized Cost		Weighted Average Coupon
Less than or equal to one year	$	43,212	$	43,350		3.81	%	$	—	$	—		—	%
Greater than one year and less than or equal to three years		1,056,763		1,035,249		4.95	%		133,123		132,520		5.05	%
Greater than three years and less than or equal to five years		4,188,329		4,134,240		4.48	%		3,841,282		3,821,992		4.92	%
Greater than five years		34,390,359		34,214,673		4.19	%		9,479,136		9,526,980		4.31	%

Total	$	39,678,663	$	39,427,512		4.24	%	$	13,453,541	$	13,481,492		4.49	%

The weighted average life of our interest-only securities was 5.4 and 6.2 years as of June 30, 2011 and December 31, 2010, respectively. The weighted average life of our principal-only securities was 4.0 years as of June 30, 2011.

The weighted average lives of the agency securities as of June 30, 2011 and December 31, 2010 incorporates anticipated future prepayment assumptions. As of June 30, 2011, our weighted average expected constant prepayment rate (“CPR”) over the remaining life of our aggregate investment portfolio is 10%. Our estimates differ materially for different types of securities and thus individual holdings have a wide range of projected CPRs. We estimate long-term prepayment assumptions for different securities using third-party services and market data. These third-party services estimate prepayment speeds using models that incorporate the forward yield curve, current mortgage rates, mortgage rates of the outstanding loans, loan age, volatility and other factors. We review the prepayment speeds estimated by the third-party services and compare the results to market consensus prepayment speeds, if available. We also consider historical prepayment speeds and current market conditions to validate reasonableness. As market conditions may change rapidly, we use our judgment in making adjustments for different securities. Various market participants could use materially different assumptions.

Our agency securities classified as available-for-sale are reported at fair value, with unrealized gains and losses excluded from earnings and reported in OCI, a component of stockholders’ equity. The following table summarizes changes in accumulated OCI for available-for-sale securities for the three and six months ended June 30, 2011 and 2010 (in thousands):


	Beginning Balance			Unrealized Gains and (Losses)		Reversal of Prior Period Unrealized (Gains) and Losses on Realization			Ending Balance
Three months ended June 30, 2011	$	(67,751	)		412,252		(93,350	)	$	251,151
Three months ended June 30, 2010	$	37,951			88,547		(29,063	)	$	97,435
Six months ended June 30, 2011	$	(27,950	)		376,671		(97,570	)	$	251,151
Six months ended June 30, 2010	$	36,018			117,888		(56,471	)	$	97,435

The following table presents the gross unrealized loss and fair values of our available-for-sale agency securities by length of time that such securities have been in a continuous unrealized loss position as of June 30, 2011 and December 31, 2010 (in thousands):


	Unrealized Loss Position For
	Less than 12 Months					12 Months or More				Total
	Estimated Fair Value		Unrealized Loss			Estimated Fair Value		Unrealized Loss		Estimated Fair Value		Unrealized Loss
June 30, 2011	$	12,995,097	$	(83,117	)	$	—	$	—	$	12,995,097	$	(83,117	)
December 31, 2010	$	7,498,384	$	(96,445	)	$	—	$	—	$	7,498,384	$	(96,445	)

As of June 30, 2011, we did not intend to sell any of these agency securities and we believe it is not more likely than not we will be required to sell the agency securities before recovery of their amortized cost basis. The unrealized losses on these agency securities are not due to credit losses given the government-sponsored entity or government guarantees but are rather due to changes in interest rates and prepayment expectations.

Gains and Losses

The following table is a summary of our net gain from sale of agency securities for the three and six months ended June 30, 2011 and 2010 (in thousands):


	Three Months Ended						Six Months Ended
	June 30, 2011			June 30, 2010			June 30, 2011			June 30, 2010
Agency securities sold, at cost	$	(10,448,371	)	$	(2,624,277	)	$	(12,383,828	)	$	(4,741,787	)
Proceeds from agency securities sold(1)		10,542,263			2,653,862			12,481,940			4,798,780

Net gains on sale of agency securities	$	93,892		$	29,585		$	98,112		$	56,993

Gross gains on sale of agency securities	$	95,684		$	31,327		$	109,233		$	61,381
Gross losses on sale of agency securities		(1,792	)		(1,742	)		(11,121	)		(4,388	)

Net gains on sale of agency securities	$	93,892		$	29,585		$	98,112		$	56,993

(1)	Proceeds include cash received during the period, plus receivable for agency securities sold during the period as of period end.

For the three and six months ended June 30, 2011, we recognized an unrealized gain of $0.3 and $3.1 million, and for the three and six months ended June 30, 2010 we recognized an unrealized loss of $9.0 and $8.0 million, respectively, in gain (loss) on derivative instruments and trading securities, net in our consolidated statements of operations and comprehensive income for the change in value of investments in interest-only and principal-only securities. For the three and six months ended June 30, 2011, we recognized a realized gain of $0.5 and $0.5 million in gain on agency securities, respectively, net in our consolidated statements of operations and comprehensive income for the sales of interest-only and principal-only securities. There were no sales of interest-only or principal-only securities during the six months ended June 30, 2010.

Pledged Assets

The following tables summarize our agency securities pledged as collateral under repurchase agreements, other debt, derivative agreements and prime broker agreements by type as of June 30, 2011 and December 31, 2010 (in thousands):


	As of June 30, 2011
Agency Securities Pledged(1)	Fannie Mae		Freddie Mac		Ginnie Mae		Total
Under Repurchase Agreements
Fair value	$	21,323,526	$	13,795,825	$	108,778	$	35,228,129
Amortized cost		21,145,673		13,713,743		107,269		34,966,685
Accrued interest on pledged agency securities		71,278		45,431		357		117,066

Under Other Debt Agreements
Fair value		66,143		—		—		66,143
Amortized cost		65,158		—		—		65,158
Accrued interest on pledged agency securities		270		—		—		270

Under Derivative Agreements
Fair value		96,737		196,953		—		293,690
Amortized cost		95,510		195,220		—		290,730
Accrued interest on pledged agency securities		941		1,470		—		2,411

Under Prime Broker Agreements
Fair value		46,181		56,828		—		103,009
Amortized cost		45,698		56,020		—		101,718
Accrued interest on pledged agency securities		166		193		—		359

Total Fair Value of Agency Securities Pledged and Accrued Interest	$	21,605,242	$	14,096,700	$	109,135	$	35,811,075

(1)	Agency securities pledged include pledged amounts of $573.0 million related to agency securities sold but not yet settled as of June 30, 2011.


	As of December 31, 2010
Agency Securities Pledged(2)	Fannie Mae		Freddie Mac		Ginnie Mae		Total
Under Repurchase Agreements
Fair value	$	7,707,046	$	4,554,541	$	95,066	$	12,356,653
Amortized cost		7,709,785		4,591,245		94,860		12,395,890
Accrued interest on pledged agency securities		27,589		15,642		332		43,563

Under Other Debt Agreements
Fair value		77,906		—		—		77,906
Amortized cost		77,460		—		—		77,460
Accrued interest on pledged agency securities		325		—		—		325

Under Derivative Agreements
Fair value		36,651		30,306		—		66,957
Amortized cost		36,343		30,382		—		66,725
Accrued interest on pledged agency securities		156		118		—		274

Under Prime Broker Agreements
Fair value		6,061		5,997		2,032		14,090
Amortized cost		6,061		6,061		2,024		14,146
Accrued interest on pledged agency securities		28		21		8		57

Total Fair Value of Agency Securities Pledged and Accrued Interest	$	7,855,762	$	4,606,625	$	97,438	$	12,559,825

(2)	Agency securities pledged include pledged amounts of $244.7 million related to agency securities sold but not yet settled as of December 31, 2010.

The following table summarizes our agency securities pledged as collateral under repurchase agreements and other debt by remaining maturity as of June 30, 2011 and December 31, 2010 (dollars in thousands):


	As of June 30, 2011(1)						As of December 31, 2010(1)
Remaining Maturity	Fair Value		Amortized Cost		Accrued Interest on Pledged Agency Securities		Fair Value		Amortized Cost		Accrued Interest on Pledged Agency Securities
30 days or less	$	32,110,768	$	31,862,025	$	106,734	$	9,909,121	$	9,943,239	$	35,151
31 - 59 days		3,179,965		3,166,352		10,587		2,525,438		2,530,111		8,737
60 - 90 days		—		—		—		—		—		—
Greater than 90 days		3,539		3,466		15		—		—		—

Total	$	35,294,272	$	35,031,843	$	117,336	$	12,434,559	$	12,473,350	$	43,888

(1)	Agency securities pledged include pledged amounts of $573.0 million and $244.7 million related to agency securities sold but not yet settled as of June 30, 2011 and December 31, 2010, respectively.

Securitizations

All of our CMO securities are backed by fixed or adjustable-rate agency securities and Fannie Mae or Freddie Mac guarantees the payment of interest and principal and acts as the trustee and administrator of their respective securitization trusts. Our involvement with the consolidated CMO trust described below is limited to the agency securities transferred to the trust by the investment bank and the CMO securities subsequently held by us. Accordingly, we are not required to provide the beneficial interest holders of the CMO securities any financial or other support. Whether or not we were involved with the formation of the CMO or purchased the securities from third parties in separate transactions, our maximum exposure to loss related to our involvement with CMO trusts is the fair value of the CMO securities and interest-only securities held by us. As of June 30, 2011 and December 31, 2010, the fair value of all of our CMO securities, interest-only securities and principal-only securities, excluding the consolidated CMO trust discussed below, was $512.1 million and $458.6 million, respectively, or $516.4 million and $463.6 million, respectively, including the net asset value of the consolidated CMO trust discussed below.

During fiscal year 2010, we entered into a CMO transaction whereby we transferred agency securities with a cost basis of $85.9 million to an investment bank in exchange for cash proceeds of $80.8 million and at the same time entered into a commitment with the same investment bank to purchase a to-be-issued interest-only strip collateralized by the agency securities transferred for $5.1 million. The investment bank contributed the transferred agency securities to a securitization trust held by Fannie Mae in exchange for CMO securities issued by the trust. Once the transferred agency securities were transferred to the securitization trust, Fannie Mae may only remove such securities upon certain events. Pursuant to the pre-existing commitment, the investment bank transferred to us the interest-only security issued by the trust. Our primary purpose for entering into this transaction was to eliminate the need to finance the principal class by transferring it to third parties, while still retaining the underlying economics of a financed transaction for the transferred securities, which we viewed as favorable. We concluded that we were the primary beneficiary of the CMO trust based on our disproportionate economic interest and, accordingly, we consolidated the CMO trust as it related to the agency securities transferred by us and the related liabilities issued by the trust. The effect of consolidating the CMO trust was that the interest-only security received was eliminated and we continued to recognize the assets transferred to the securitization trust in our total agency securities held and recorded a corresponding liability for the debt issued by the securitization trust, which is classified as other debt in our accompanying consolidated balance sheets. As of June 30, 2011, we recognized agency securities with a total fair value of $66.1 million and a principal balance of $62.3 million collateralized the remaining debt outstanding issued by the securitization trust of $61.8 million. As of December 31, 2010, we recognized agency securities with a total fair value of $77.9 million and a principal balance of $73.5 million collateralized the remaining debt outstanding issued by the securitization trust of $72.9 million. Such agency securities can only be used to settle this debt and the holder(s) of the debt issued by the

securitization trust have no recourse to us. Further, there are no arrangements that could require us to provide financial support to this securitization trust. The consolidation did not materially impact our accompanying consolidated statements of operations and comprehensive income and consolidated statements of cash flows.

Note 5. Repurchase Agreements and Other Debt

We pledge certain of our agency securities as collateral under repurchase arrangements with financial institutions, the terms and conditions of which are negotiated on a transaction-by-transaction basis. Interest rates on these borrowings are generally based on LIBOR plus or minus a margin and amounts available to be borrowed are dependent upon the fair value of the agency securities pledged as collateral, which fluctuates with changes in interest rates, type of security and liquidity conditions within the banking, mortgage finance and real estate industries. In response to declines in fair value of pledged agency securities, lenders may require us to post additional collateral or pay down borrowings to re-establish agreed upon collateral requirements, referred to as margin calls. As of June 30, 2011 and December 31, 2010, we have met all margin call requirements. Due to their short-term nature, repurchase agreements are carried at cost, which approximates fair value.

The following table summarizes our borrowings under repurchase arrangements and weighted average interest rates classified by original maturities as of June 30, 2011 and December 31, 2010 (dollars in thousands):


	As of June 30, 2011							As of December 31, 2010
Original Maturity	Borrowings Outstanding		Average Interest Rate			Weighted Average Days to Maturity		Borrowings Outstanding		Average Interest Rate			Weighted Average Days to Maturity
30 days or less	$	13,475,727		0.23	%		13	$	3,306,175		0.32	%		12
31 - 60 days		11,844,846		0.23	%		28		5,648,155		0.31	%		20
61 - 90 days		4,202,460		0.24	%		22		1,496,452		0.29	%		33
Greater than 90 days		3,982,109		0.25	%		15		1,229,310		0.29	%		43

Total / Weighted Average	$	33,505,142		0.23	%		20	$	11,680,092		0.31	%		22

As of June 30, 2011 and December 31, 2010, we did not have an amount at risk with any counterparty greater than 10% of our stockholders’ equity. We do not anticipate any defaults by our repurchase agreement counterparties.

Other debt of $61.8 million and $72.9 million as of June 30, 2011 and December 31, 2010, respectively, consists of other variable rate debt outstanding at LIBOR plus 25 basis points in connection with the consolidation of a structured transaction for which we are the primary beneficiary in our accompanying financial statements (see Note 4).

Note 6. Derivative and Other Hedging Instruments

In connection with our risk management strategy, we hedge a portion of our interest rate risk by entering into derivative and other hedging instrument contracts. We may enter into agreements for interest rate swap agreements, interest rate swaptions, interest rate cap or floor contracts and futures or forward contracts. We may also purchase or short TBA and U.S. Treasury securities, purchase or write put or call options on TBA securities or we may invest in other types of mortgage derivative securities, such as interest-only securities, and synthetic total return swaps, such as the IOS Index. Our risk management strategy attempts to manage the overall risk of the portfolio, reduce fluctuations in book value and generate additional income distributable to stockholders. For additional information regarding our derivative instruments and our overall risk management strategy, please refer to the discussion of derivative and other hedging instruments in Note 3.

As of June 30, 2011 and December 31, 2010, our derivative and other hedging instruments were comprised primarily of interest rate swaps, which have the effect of modifying the repricing characteristics of our repurchase agreements and cash flows on such liabilities. Our interest rate swaps are used to manage the interest

rate risk created by our variable rate short-term repurchase agreements. Under our interest rate swaps, we typically pay a fixed-rate and receive a floating rate based on one-month LIBOR with terms usually ranging up to 5 years. Our interest rate swaps are generally designated as cash flow hedges under ASC 815.

Derivative and other hedging instruments entered into in addition to interest rate swap agreements are intended to supplement our use of interest rate swaps and we do not currently expect our use of these instruments to be the primary protection against interest rate risk for our portfolio. These instruments are accounted for as either derivatives, but are not typically designated as hedges under ASC 815, or trading securities. Therefore, any changes in the fair values of the contracts prior to their settlement date are included in earnings. We do not use derivative or other hedging instruments for speculative purposes.

Derivatives Designated as Hedging Instruments

As of June 30, 2011 and December 31, 2010, we had net interest rate swap liabilities of $233.1 million and $37.7 million, respectively. The tables below summarize information about our outstanding interest rate swaps as of June 30, 2011 and December 31, 2010 (dollars in thousands):


		As of
Interest Rate Swaps Designated as Hedging Instruments	Balance Sheet Location	June 30, 2011			December 31, 2010
Interest rate swap assets	Derivative assets, at fair value	$	30,321		$	33,695
Interest rate swap liabilities	Derivative liabilities, at fair value		(263,443	)		(71,417	)

		$	(233,122	)	$	(37,722	)


	As of June 30, 2011
Remaining Term for Interest Rate Swaps Designated as Hedging Instruments(1)	Notional Amount		Average Fixed Pay Rate			Average Receive Rate			Net Estimated Fair Value			Average Maturity (Years)
1 year or less	$	900,000		1.72	%		0.19	%	$	(8,794	)		0.6
Greater than 1 year and less than 3 years		6,100,000		1.22	%		0.19	%		(59,576	)		2.3
Greater than 3 years and less than 5 years		11,600,000		1.76	%		0.19	%		(127,063	)		4.0
Greater than 5 years		3,400,000		2.25	%		0.19	%		(37,689	)		5.1

Total	$	22,000,000		1.69	%		0.19	%	$	(233,122	)		3.5

(1)	Remaining term includes the effect of deferred start dates for forward starting swaps of $7.9 billion ranging from one to six months from June 30, 2011.


	As of December 31, 2010
Remaining Term for Interest Rate Swaps Designated as Hedging Instruments	Notional Amount		Average Fixed Pay Rate			Average Receive Rate			Net Estimated Fair Value			Average Maturity (Years)
1 year or less	$	750,000		1.40	%		0.26	%	$	(5,595	)		0.7
Greater than 1 year and less than 3 years		2,850,000		1.54	%		0.26	%		(32,865	)		2.5
Greater than 3 years and less than 5 years		2,850,000		1.78	%		0.26	%		738			4.3
Greater than 5 years		—		—			—			—			—

Total	$	6,450,000		1.63	%		0.26	%	$	(37,722	)		3.1

The following table summarizes information about our outstanding interest rate swaps designated as hedging instruments for the three and six months ended June 30, 2011 and 2010 (in thousands):


Interest Rate Swaps Designated as Hedging Instruments	Beginning Notional Amount		Additions		Expirations/ Terminations			Ending Notional Amount
Three months ended June 30, 2011	$	14,950,000		7,300,000		(250,000	)	$	22,000,000
Three months ended June 30, 2010	$	2,350,000		650,000		—		$	3,000,000
Six months ended June 30, 2011	$	6,450,000		15,800,000		(250,000	)	$	22,000,000
Six months ended June 30, 2010	$	2,050,000		950,000		—		$	3,000,000

The table below summarizes the effect of interest rate swaps designated as hedges under ASC 815 on our consolidated statement of operations for the three and six months ended June 30, 2011 and 2010 (in thousands):


Interest Rate Swaps in Cash Flow Hedging Relationships	Amount of Gain or (Loss) Recognized in OCI (Effective Portion)			Location of Gain or (Loss) Reclassified from OCI into Earnings (Effective Portion)	Amount of Gain or (Loss) Reclassified from OCI into Earnings (Effective Portion)			Location of Gain or (Loss) Recognized in Earnings (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain or (Loss) Recognized in Earnings (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Three months ended June 30, 2011	$	(252,664	)	Interest Expense	$	(46,109	)	Loss on derivative instruments and trading securities, net	$	(507	)

Three months ended June 30, 2010	$	(42,271	)	Interest Expense	$	(13,744	)	Loss on derivative instruments and trading securities, net	$	(123	)

Six months ended June 30, 2011	$	(194,763	)	Interest Expense	$	(69,220	)	Loss on derivative instruments and trading securities, net	$	(638	)

Six months ended June 30, 2010	$	(59,605	)	Interest Expense	$	(27,071	)	Loss on derivative instruments and trading securities, net	$	(314	)

As of June 30, 2011, the amount of net interest expense expected to flow through our statement of operations over the next twelve months due to expected net settlements on our interest rate swaps is $282.4 million.

Additionally, during the six months ended June 30, 2011 and the three and six months ended June 30, 2010, we entered into or held forward contracts to purchase TBA and specified agency securities that were designated as cash flow hedges pursuant to ASC 815. We did not enter into such agreements during the three month period ended June 30, 2011. The following table summarizes information about our outstanding forward contracts designated as hedging instruments for the three and six months ended June 30, 2011 and 2010 (dollars in thousands):


Purchases of TBAs and Forward Settling Agency Securities Designated as Hedging Instruments	Beginning Notional Amount		Additions		Settlement / Expirations			Ending Notional Amount		Fair Value as of Period End		Average Maturity as of Period End (Months)
Three months ended June 30, 2011	$	—		—		—		$	—	$	—		—
Three months ended June 30, 2010	$	66,300		80,000		(66,300	)	$	80,000	$	629		2
Six months ended June 30, 2011	$	245,000		—		(245,000	)	$	—	$	—		—
Six months ended June 30, 2010	$	—		146,300		(66,300	)	$	80,000	$	629		2

The effective portion of gains or losses for TBAs and forward settling specified agency securities is initially recognized in OCI for designated cash flow hedges and is subsequently reclassified within OCI for available-for-sale securities upon acquisition of the underlying hedged item. The ineffective portion of gains or losses is recognized in earnings in gain (loss) on derivative instruments and trading securities, net.

The table below summarizes the effect of purchases of TBAs and forward settling securities designated as hedges under ASC 815 on our consolidated statement of operations and comprehensive income for the three and six months ended June 30, 2011 and 2010 (in thousands).


Purchases of TBAs and Forward Settling Securities in Cash Flow Hedging Relationships	Amount of Gain or (Loss) Recognized in OCI for Cash Flow Hedges (Effective Portion)		Amount of Gain or (Loss) Recognized in OCI for Cash Flow Hedges and Reclassified to OCI for Available-for-Sale Securities (Effective Portion)			Location of Gain or (Loss) Recognized in Earnings (Ineffective Portion and Amount Excluded from Effectiveness Testing)	Amount of Gain or (Loss) Recognized in Earnings (Ineffective Portion and Amount Excluded from Effectiveness Testing)
Three months ended June 30, 2011	$	—	$	—		Gain on derivative instruments and trading securities, net	$	—
Three months ended June 30, 2010	$	629	$	—		Gain on derivative instruments and trading securities, net	$	—
Six months ended June 30, 2011	$	12	$	(3,213	)	Gain on derivative instruments and trading securities, net	$	—
Six months ended June 30, 2010	$	629	$	—		Gain on derivative instruments and trading securities, net	$	—

Derivatives Not Designated as Hedging Instruments

As of June 30, 2011 and December 31, 2010, we had contracts to purchase (“long position”) and sell (“short position”) TBA and specified agency securities on a forward basis. Following is a summary of our long and short TBA and forward settling positions as of June 30, 2011 and December 31, 2010 (in thousands).


	As of June 30, 2011						As of December 31, 2010
Purchase and Sale Contracts for TBAs and Forward Settling Securities Not Designated as Hedging Instruments	Notional Amount			Fair Value			Notional Amount			Fair Value
15 year TBA securities:
Purchase	$	1,245,700		$	4,837		$	1,532,000		$	10,297
Sale		(19,825	)		(515	)		(1,454,500	)		(3,127	)

15 year TBA securities, net		1,225,875			4,322			77,500			7,170

30 year TBA securities:
Purchase		1,480,000			720			750,000			3,213
Sale		(4,261,700	)		(19,976	)		(1,835,700	)		6,738

30 year TBA securities, net		(2,781,700	)		(19,256	)		(1,085,700	)		9,951

Purchase of 20 year TBA securities		—			—			125,000			(2,116	)
Purchase of specified ARM securities		706,665			3,518			34,303			296

Total, Net	$	(849,160	)	$	(11,416	)	$	(848,897	)	$	15,301

As of June 30, 2011 and December 31, 2010, we had interest rate swap agreements outstanding that were not designated as hedges under ASC 815 consisting of interest rate swap agreements where we pay a fixed rate (“payer interest rate swaps”) and interest rate swap agreements where we receive a fixed rate (“receiver interest rate swaps”), summarized in the tables below (dollars in thousands).


	As of June 30, 2011
Interest Rate Swaps Not Designated as Hedging Instruments	Maturity		Notional Amount		Average Fixed Pay (Receive) Rate			Average Receive (Pay) Rate			Fair Value		Average Maturity (Years)
Payer interest rate swaps		2015	$	250,000		1.66	%		0.19	%	$	174		4.4
Receiver interest rate swaps		2015	$	100,000		(2.50	%)		(0.19	%)	$	3,659		4.3


	As of December 31, 2010
Interest Rate Swaps Not Designated as Hedging Instruments	Maturity		Notional Amount		Average Fixed Pay (Receive) Rate			Average Receive (Pay) Rate			Fair Value		Average Maturity (Years)
Payer interest rate swaps		2015	$	250,000		1.66	%		0.26	%	$	4,140		4.9
Receiver interest rate swaps		2015	$	200,000		(2.26	%)		(0.26	%)	$	2,743		4.7

As of June 30, 2011 and December 31, 2010, we had interest rate swaption agreements outstanding consisting of options to enter into interest rate swaps in the future where we would pay a fixed rate (“payer swaptions”) as summarized in the tables below (dollars in thousands):


	As of June 30, 2011
	Option						Underlying Swap
Swaption	Cost		Fair Value		Average Months to Expiration		Notional Amount		Pay Rate			Average Receive Rate		Average Term (Years)
Payer	$	53,079	$	36,353		9	$	4,050,000		3.56	%		1M LIBOR		7.0

	As of December 31, 2010
	Option						Underlying Swap
Swaption	Cost		Fair Value		Average Months to Expiration		Notional Amount		Pay Rate			Average Receive Rate		Average Term (Years)
Payer	$	4,596	$	16,766		4	$	850,000		2.28	%		1M LIBOR		5.6

As of June 30, 2011, we had total return swaps outstanding linked to the Markit IOS Index, summarized in the table below. Under these swap agreements, we are either entitled to receive (“long position”) or pay (“short position”) a stated coupon linked to the index, net of an implied financing cost equal to one-month LIBOR, plus/(minus) increases/(decreases) in the index market value. Long positions are intended to synthetically replicate the performance of interest-only securities. Therefore, as interest rates rise and prepayment expectations decline, the index will typically increase in value and, as interest rates fall and prepayment expectations rise, the index will typically decrease in value. As the holder of the long position, we are required to pay a monthly periodic cash settlement equal to a decrease in the index value and, conversely, we are entitled to receive a periodic cash settlement equal to an increase in the index value. Changes, or mark-to-market movements, in the index are measured from the preceding periodic measurement date. Periodic cash settlements of the index mark-to-market movements are netted against periodic cash settlements of the stated coupon, less the implied financing costs. As of June 30, 2011, the linked index values of our total return swaps totaled $75.7 million. As of June 30, 2011, the fair value of these total return swaps reported in derivative assets, at fair value on our consolidated balance sheet was $0.1 million and represents the unrealized mark-to-market change in the linked index value since the preceding measurement date through June 30, 2011. Realized and unrealized gains and losses associated with changes in the underlying linked index value and net coupon interest are recognized in gain (loss) on derivative instruments and trading securities, net in our consolidated statements of operations and comprehensive income. We did not have any total return swaps outstanding as of December 31, 2010.


		As of June 30, 2011 (in thousands)
Position	Markit IOS Sub-Index	Notional Amount			Expiration Date		Fair Value
Long	5.0%, 30-Year, Fixed Rate, Fannie Mae MBS Pools	$	74,757			January 2040	$	467
	5.5%, 30-Year, Fixed Rate, Fannie Mae MBS Pools		403,965			January 2039		433
	6.0%, 30-Year, Fixed Rate, Fannie Mae MBS Pools		203,933			January 2039		(518	)

			682,655					382


Short	5.0%, 30-Year, Fixed Rate, Fannie Mae MBS Pools		(74,758	)		January 2040		(362	)
	5.5%, 30-Year, Fixed Rate, Fannie Mae MBS Pools		(234,546	)		January 2039		110

			(309,304	)				(252	)

Net		$	373,351				$	130

The table below summarizes fair value information about our derivatives outstanding that were not designated as hedging instruments as of June 30, 2011 and December 31, 2010 (in thousands).


		As of
Derivatives Not Designated as Hedging Instruments	Balance Sheet Location	June 30, 2011			December 31, 2010
Purchase of TBA and forward settling agency securities	Derivative assets, at fair value	$	10,653		$	2,929
Sale of TBA and forward settling agency securities	Derivative assets, at fair value		2,818			16,320
Markit IOS total return swaps - long	Derivative assets, at fair value		1,540			—
Payer interest rate swaps	Derivative assets, at fair value		720			4,140
Receiver interest rate swaps	Derivative assets, at fair value		3,659			2,743
Payer swaptions	Derivative assets, at fair value		36,353			16,766

		$	55,743		$	42,898

Purchase of TBA and forward settling agency securities	Derivative liabilities, at fair value	$	(1,578	)	$	(2,193	)
Sale of TBA and forward settling agency securities	Derivative liabilities, at fair value		(23,309	)		(1,755	)
Payer interest rate swaps	Derivative liabilities, at fair value		(546	)		—
Markit IOS total return swaps - long	Derivative liabilities, at fair value		(253	)		—
Markit IOS total return swaps - short	Derivative liabilities, at fair value		(1,157	)		—

		$	(26,843	)	$	(3,948	)

Additionally, as of June 30, 2011 and December 31, 2010, we had obligations to return treasury securities borrowed under reverse repurchase agreements accounted for as securities borrowing transactions for a fair value of $1.46 billion and $245.5 million, respectively. The borrowed securities were used to cover short sales of treasury securities from which we received total proceeds of $1.47 billion and $244.8 million, respectively. The change in fair value of the borrowed securities is recorded in gain (loss) on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive income.

The tables below summarize the effect of derivative instruments not designated as hedges under ASC 815 on our consolidated statement of operations and comprehensive income for the three and six months ended June 30, 2011 and 2010 (in thousands):


	For the Three Months Ended June 30, 2011
Derivatives Not Designated as Hedging Instruments	Notional Amount as of March 31, 2011		Additions			Settlement, Expiration or Exercise			Notional Amount as of June 30, 2011			Amount of Gain/(Loss) Recognized in Income on Derivatives(1)
Purchase of TBA and forward settling agency securities	$	4,316,100		10,073,472			(10,957,207	)	$	3,432,365		$	61,045
Sale of TBA and forward settling agency securities	$	5,400,035		32,607,920			(33,726,430	)	$	4,281,525			(165,199	)
Payer interest rate swaps	$	250,000		—			—		$	250,000			(6,852	)
Receiver interest rate swaps	$	100,000		—			—		$	100,000			2,699
Payer swaptions	$	2,100,000		2,650,000			(700,000	)	$	4,050,000			(20,844	)
Receiver swaptions	$	250,000		—			(250,000	)	$	—			(369	)
Short sales of U.S. government securities	$	—		5,609,000			(4,145,000	)	$	1,464,000			(674	)
Treasury futures	$	—		50,000			(50,000	)	$	—			248
Markit IOS total return swaps - long	$	1,015,314		—			(332,659	)	$	682,655			2,884
Markit IOS total return swaps - short	$	—		(312,659	)		3,356		$	(309,303	)		(545	)

												$	(127,607	)

(1)

This amount excludes $0.4 million recorded as a gain for interest-only and principal-only securities re-measured at fair value through earnings, a loss of $0.5 million for hedge ineffectiveness on our outstanding interest rate swaps designated as hedging instruments and a gain of $27.7 million from trading securities in gain on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive for the three months ended June 30, 2011.


	For the Three Months Ended June 30, 2010
Derivatives Not Designated as Hedging Instruments	Notional Amount as of March 31, 2010		Additions		Settlement, Expiration or Exercise			Notional Amount as of June 30, 2010		Amount of Gain/(Loss) Recognized in Income on Derivatives(2)
Purchase of TBA and forward settling agency securities	$	184,668		253,213		(256,739	)	$	181,142	$	8,196
Sale of TBA and forward settling agency securities	$	335,000		1,851,094		(1,916,094	)	$	270,000		(23,623	)
Put options	$	75,000		—		(75,000	)	$	—		(365	)
Payer interest rate swaps	$	—		50,000		(50,000	)	$	—		(280	)
Payer swaptions	$	200,000		—		—		$	200,000		(591	)
Receiver swaptions	$	100,000		200,000		—		$	300,000		2,502

										$	(14,161	)

(2)

This amount excludes $8.5 million recorded as a loss for interest-only securities re-measured at fair value through earnings, a loss of $0.1 million for hedge ineffectiveness on our outstanding interest rate swaps and a gain of $1.4 million from trading securities in (loss) gain on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive for the three months ended June 30, 2011.


	For the Six Months Ended June 30, 2011
Derivatives Not Designated as Hedging Instruments	Notional Amount as of December 31, 2010		Additions			Settlement, Expiration or Exercise			Notional Amount as of June 30, 2011			Amount of Gain/(Loss) Recognized in Income on Derivatives(3)
Purchase of TBA and forward settling agency securities	$	512,303		22,341,165			(19,421,103	)	$	3,432,365		$	45,250
Sale of TBA and forward settling agency securities	$	1,361,200		50,928,690			(48,008,365	)	$	4,281,525			(146,336	)
Put options	$	—		(200,000	)		200,000		$	—			1,133
Payer interest rate swaps	$	250,000		—			—		$	250,000			(5,887	)
Receiver interest rate swaps	$	200,000		—			(100,000	)	$	100,000			926
Payer swaptions	$	850,000		4,200,000			(1,000,000	)	$	4,050,000			(25,880	)
Receiver swaptions	$	—		250,000			(250,000	)	$	—			(736	)
Short sales of U.S. government securities	$	250,000		8,524,000			(7,310,000	)	$	1,464,000			195
Treasury futures	$	—		50,000			(50,000	)	$	—			248
Markit IOS total return swaps - long	$	—		1,089,420			(406,765	)	$	682,655			12,440
Markit IOS total return swaps - short	$	—		(312,659	)		3,356		$	(309,303	)		(545	)

												$	(119,192	)

(3)

This amount excludes $3.1 million recorded as a gain for interest-only securities re-measured at fair value through earnings, a loss of $0.6 million for hedge ineffectiveness on our outstanding interest rate swaps and a gain of $28.3 million from trading securities in (loss) gain on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive for the six months ended June 30, 2011.


	For the Six Months Ended June 30, 2010

Derivatives Not Designated as Hedging Instruments	Notional Amount as of December 31, 2009		Additions		Settlement, Expiration or Exercise			Notional Amount as of June 30, 2010		Amount of Gain/(Loss) Recognized in Income on Derivatives(4)
Purchase of TBA and forward settling agency securities	$	596,516		1,089,089		(1,504,463	)	$	181,142	$	12,434
Sale of TBA and forward settling agency securities	$	616,747		2,817,260		(3,164,007	)	$	270,000		(20,877	)
Put options	$	—		75,000		(75,000	)	$	—		(328	)
Payer interest rate swaps				150,000		(150,000	)	$	—		(1,111	)
Payer swaptions	$	200,000		—		—		$	200,000		(2,382	)
Receiver swaptions	$	100,000		300,000		(100,000	)	$	300,000		2,126

										$	(10,138	)

(4)

This amount excludes $6.4 million recorded as a loss for interest-only securities re-measured at fair value through earnings, a loss of $0.3 million for hedge ineffectiveness on our outstanding interest rate swaps and a gain of $1.4 million from trading securities in (loss) gain on derivative instruments and trading securities, net in our consolidated statement of operations and comprehensive for the six months ended June 30, 2010.

Credit Risk-Related Contingent Features

The use of derivatives creates exposure to credit risk relating to potential losses that could be recognized in the event that the counterparties to these instruments fail to perform their obligations under the contracts. We minimize this risk by limiting our counterparties to major financial institutions with acceptable credit ratings and monitoring positions with individual counterparties. In addition, we may be required to pledge assets as collateral for our derivatives, whose amounts vary over time based on the market value, notional amount and remaining

term of the derivative contract. In the event of a default by a counterparty we may not receive payments provided for under the terms of our derivative agreements, and may have difficulty obtaining our assets pledged as collateral for our derivatives. The cash and cash equivalents and agency securities pledged as collateral for our derivative instruments is included in restricted cash and agency securities, respectively, on our consolidated balance sheets.

Each of our ISDA Master Agreements contains provisions under which we are required to fully collateralize our obligations under the swap instrument if at any point the fair value of the swap represents a liability greater than the minimum transfer amount contained within our agreements. We were also required to post initial collateral upon execution of certain of our swap transactions. If we breach any of these provisions, we will be required to settle our obligations under the agreements at their termination values.

Further, each of our ISDA Master Agreements also contains a cross default provision under which a default under certain of our other indebtedness in excess of a certain threshold causes an event of default under the agreement. Threshold amounts vary by lender. Following an event of default, we could be required to settle our obligations under the agreements at their termination values. Additionally, under certain of our ISDA Master Agreements, we could be required to settle our obligations under the agreements at their termination values if we fail to maintain certain minimum shareholders’ equity thresholds or our REIT status or comply with limits on our leverage above certain specified levels.

As of June 30, 2011, the fair value of our interest rate swaps in a liability position related to these agreements was $265.4 million. We had agency securities with fair values of $293.7 million, and restricted cash of $188.8 million, or $482.5 million in total agency securities and restricted cash, pledged as collateral against our interest rate swaps, including initial collateral posted upon execution of interest rate swap and total return swap transactions, as of June 30, 2011. Termination values of interest rate swaps in a liability position totaled $271.2 million as of June 30, 2011. The difference between the fair value liability and the termination liability represents accrued interest and an adjustment for nonperformance risk of our counterparties.

Note 7. Fair Value Measurements

ASC 820 provides for a three-level valuation hierarchy for disclosure of fair value measurement. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instrument’s categorization within the hierarchy is based upon the lowest level of input that is significant to the fair value measurement. There were no transfers between hierarchy levels during the six months ended June 30, 2011 and 2010. The three levels of hierarchy are defined as follows:

•

Level 1 Inputs —Quoted prices (unadjusted) for identical unrestricted assets and liabilities in active markets that are accessible at the measurement date.

•

Level 2 Inputs —Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

•

Level 3 Inputs —Instruments with primarily unobservable market data that cannot be corroborated.

All of our agency securities and derivative and hedging assets and liabilities were valued based on the income or market approach using Level 2 inputs as of June 30, 2011 and December 31, 2010.

Note 8. Stockholders’ Equity

Equity Offerings

During the six months ended June 30, 2011, we completed three follow-on public offerings of shares of our common stock summarized in the table below (in thousands, except per share amounts):


Public Offering	Public Offering Price Per Share(1)		Shares		Net Proceeds(2)
January 2011	$	28.00		26,910	$	719,250
March 2011	$	27.72		32,200		892,242
June 2011	$	27.56		49,680		1,368,756

Total				108,790	$	2,980,248

(1)	Public offering price per share is gross of underwriters’ discount, if applicable

(2)	Net proceeds are net of the underwriters’ discount, if applicable and other offering costs

Controlled Equity Offering^SM Program

We have a sales agreement with an underwriter to, from time to time, publicly offer and sell up to 15 million shares of our common stock in privately negotiated and/or at-the-market transactions. During the three month period ended June 30, 2011, there were no sales under the sales agreement. During the six month period ended June 30, 2011, we sold 4.3 million shares of our common stock under the sales agreement at an average offering price of $29.41 per share for proceeds, net of the underwriter’s discount and other program costs, of $126.1 million. As of June 30, 2011, 6.3 million shares of our common stock remain under the sales agreement.

Dividend Reinvestment and Direct Stock Purchase Plan

We sponsor a dividend reinvestment and direct stock purchase plan through which stockholders may purchase additional shares of our common stock by reinvesting some or all of the cash dividends received on shares of our common stock. Stockholders may also make optional cash purchases of shares of our common stock subject to certain limitations detailed in the plan prospectus. During the three month period ended June 30, 2011, there were no shares issued under the plan. During the six month period ended June 30, 2011, we issued 0.5 million shares under the plan for net cash proceeds of $14.9 million. As of June 30, 2011, there were 4.7 million shares available for issuance under the plan.

Item 2.

Management’s Discussion and Analysis of Financial Condition and Results of Operations

Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) is designed to provide a reader of American Capital Agency Corp.’s consolidated financial statements with a narrative from the perspective of management. Our MD&A is presented in five sections:

•

Executive Overview

•

Financial Condition

•

Results of Operations

•

Liquidity and Capital Resources

•

Forward-Looking Statements

EXECUTIVE OVERVIEW

American Capital Agency Corp. (“AGNC”, the “Company”, “we”, “us” and “our”) was organized on January 7, 2008 and commenced operations on May 20, 2008 following the completion of our initial public offering (“IPO”). Our common stock is traded on The NASDAQ Global Select Market under the symbol “AGNC”.

We earn income primarily from investing in residential mortgage pass-through securities and collateralized mortgage obligations (“CMOs”) on a leveraged basis. These investments consist of securities for which the principal and interest payments are guaranteed by U.S. Government-sponsored entities (“GSEs”), such as the Federal National Mortgage Association (“Fannie Mae”) and the Federal Home Loan Mortgage Corporation (“Freddie Mac”), or by a U.S. Government agency, such as the Government National Mortgage Association, (“Ginnie Mae”). We refer to these types of securities as agency securities and the specific agency securities in which we invest as our investment portfolio.

We have elected to be taxed as a real estate investment trust, or REIT, under the Internal Revenue Code of 1986, as amended (the “Code”). As such, we are required to distribute annually 90% of our taxable net income. As long as we qualify as a REIT, we will generally not be subject to U.S. federal or state corporate taxes on our taxable net income to the extent that we distribute all of our annual taxable net income to our stockholders. We are externally managed by American Capital AGNC Management, LLC (“our Manager”), an affiliate of American Capital, Ltd. (“American Capital”).

Our Investment Strategy

Our investment strategy is to manage an investment portfolio consisting exclusively of agency securities (other than for hedging purposes) that seeks to generate attractive, risk-adjusted returns. Specifically, our investment strategy is designed to:

•

manage an investment portfolio consisting of agency securities that seeks to generate attractive risk-adjusted returns;

•

capitalize on discrepancies in the relative valuations in the agency securities market;

•

manage financing, interest and prepayment rate risks;

•

preserve our net asset value;

•

provide regular quarterly distributions to our stockholders;

•

qualify as a REIT; and

•

remain exempt from the requirements of the Investment Company Act of 1940, as amended (the “Investment Company Act”).

FINANCIAL CONDITION

As of June 30, 2011 and December 31, 2010, our investment portfolio consisted of $39.9 billion and $13.5 billion, respectively, of agency securities. The following tables summarize certain characteristics of our investment portfolio as of June 30, 2011 (dollars in thousands):


	As of June 30, 2011
	Par Value		Amortized Cost		Amortized Cost Basis			Fair Value		Weighted Average
	Par Value		Amortized Cost		Amortized Cost Basis			Fair Value		Coupon			Yield(1)
Agency Securities Classified as Available-For-Sale:
Fannie Mae	$	23,109,832	$	24,023,911		104.0	%	$	24,192,174		4.28	%		3.41	%
Freddie Mac		14,729,370		15,291,385		103.8	%		15,372,680		4.18	%		3.42	%
Ginnie Mae		107,989		112,216		103.9	%		113,809		4.16	%		2.15	%

Total / Weighted Average Available-For-Sale Agency Securities	$	37,947,191	$	39,427,512		103.9	%	$	39,678,663		4.24	%		3.41	%

Fixed-Rate	$	33,293,597	$	34,605,297		103.9	%	$	34,800,624		4.25	%		3.51	%
Adjustable-Rate		4,401,190		4,563,144		103.7	%		4,612,940		4.18	%		2.74	%
CMO		252,404		259,071		102.6	%		265,099		3.79	%		2.72	%

Total / Weighted Average Available- For-Sale Securities	$	37,947,191	$	39,427,512		103.9	%	$	39,678,663		4.24	%		3.41	%


	As of June 30, 2011
	Underlying Unamortized Principal Balance		Amortized Cost		Fair Value		Weighted Average
	Underlying Unamortized Principal Balance		Amortized Cost		Fair Value		Coupon			Yield (1)
Agency Securities Remeasured at Fair Value Through Earnings:
Interest-Only Strips
Fannie Mae	$	791,479	$	114,547	$	118,210		5.57	%		8.24	%
Freddie Mac		555,896		84,940		88,619		5.60	%		12.38	%
Principal-Only Strips
Fannie Mae		46,411		40,159		40,215		0.00	%		4.00	%

Total / Weighted Average Agency Securities Remeasured at Fair Value Through Earnings	$	1,393,786	$	239,646	$	247,044		5.39	%		9.00	%

(1)

interest cash flows from our interest-only securities taken together with interest cash flows from our fixed-rate, adjustable-rate and CMO securities, total 4.44% of the combined par value our agency securities (excluding the UPB of our interest-only securities) as of June 30, 2011. The combined weighted average yield of our agency portfolio was 3.45% as of June 30, 2011.

The following table summarizes certain characteristics of our investment portfolio as of December 31, 2010 (dollars in thousands):


	As of December 31, 2010
	Par Value		Amortized Cost		Amortized Cost Basis			Fair Value		Weighted Average
	Par Value		Amortized Cost		Amortized Cost Basis			Fair Value		Coupon			Yield(1)
Agency Securities Classified as Available-For-Sale:
Fannie Mae	$	8,207,464	$	8,557,281		104.3	%	$	8,559,569		4.51	%		3.31	%
Freddie Mac		4,599,712		4,819,133		104.8	%		4,788,706		4.45	%		3.11	%
Ginnie Mae		100,408		105,078		104.7	%		105,266		4.37	%		2.14	%

Total / Weighted Average Available-For-Sale Agency Securities		12,907,584	$	13,481,492		104.4	%	$	13,453,541		4.49	%		3.23	%

Fixed-Rate		8,779,691	$	9,144,352		104.2	%	$	9,101,479		4.29	%		3.45	%
Adjustable-Rate		3,745,363		3,942,937		105.3	%		3,950,164		4.96	%		2.69	%
CMO		382,530		394,203		103.1	%		401,898		4.27	%		3.52	%

Total / Weighted Average Available- For-Sale Agency Securities	$	12,907,584	$	13,481,492		104.4	%	$	13,453,541		4.49	%		3.23	%


	As of December 31, 2010
	Underlying Unamortized Principal Balance		Amortized Cost		Fair Value		Weighted Average
	Underlying Unamortized Principal Balance		Amortized Cost		Fair Value		Coupon			Yield(1)
Agency Securities Remeasured at Fair Value Through Earnings:
Interest-Only Securities
Fannie Mae	$	229,980	$	18,957	$	20,425		4.18	%		15.48	%
Freddie Mac		314,705		33,447		36,314		5.52	%		27.23	%

Total / Weighted Average Agency Securities Remeasured at Fair Value Through Earnings	$	544,685	$	52,404	$	56,739		4.95	%		22.98	%

(1)

As of December 31, 2010, the interest cash flows from our interest-only securities taken together with interest cash flows from our fixed-rate, adjustable-rate and CMO securities, total 4.70% of the combined par value our agency securities (excluding the UPB of our interest-only securities). The combined weighted average yield of our agency portfolio was 3.31% as of December 31, 2010.

As of June 30, 2011 and December 31, 2010, we held fixed-rate pass-through agency securities, pass-through agency securities collateralized by ARMs and hybrid ARMs, with coupons linked to various indices. The following tables detail the characteristics of our ARMs and hybrid ARMs portfolio by index as of June 30, 2011 and December 31, 2010 (dollars in thousands):


	As of June 30, 2011												As of December 31, 2010
	Six-Month Libor			One-Year Libor			One-Year Treasury			Twelve-Month Treasury Average			Six-Month Libor			One-Year Libor			One-Year Treasury			Twelve-Month Treasury Average
Weighted average term to next reset (months)		40			80			44			31			39			75			48			35
Weighted average margin		1.59	%		1.80	%		1.91	%		1.84	%		1.53	%		1.75	%		2.14	%		1.83	%
Weighted average annual period cap		1.09	%		2.00	%		1.58	%		1.00	%		1.23	%		2.00	%		1.86	%		1.00	%
Weighted average lifetime cap		10.60	%		9.11	%		9.91	%		10.10	%		10.86	%		9.88	%		10.28	%		10.13	%
Principal amount	$	105,180		$	3,820,758		$	244,365		$	230,887		$	141,318		$	2,683,203		$	659,825		$	261,017
Percentage of investment portfolio at par value		0	%		10	%		1	%		1	%		1	%		21	%		5	%		2	%

The following table details the number of months to the next reset for our pass-through securities collateralized by ARMs and hybrid ARMs as of June 30, 2011 and December 31, 2010 (dollars in thousands):


	As of June 30, 2011							As of December 31, 2010
	Fair Value		% Total			Average Reset		Fair Value		% Total			Average Reset
Less than one year	$	22,907		0	%		7	$	25,803		1	%		7
Greater than or equal to one year and less than two years		91,900		2	%		19		218,928		5	%		18
Greater than or equal to two years and less than three years		601,892		13	%		30		737,130		19	%		33
Greater than or equal to three years and less than five years		445,186		10	%		44		1,010,349		26	%		47
Greater than or equal to five years		3,451,055		75	%		88		1,957,954		49	%		94

Total / Weighted Average	$	4,612,940		100	%		74	$	3,950,164		100	%		66

Actual maturities of agency securities are generally shorter than stated contractual maturities primarily as a result of prepayments of principal of the underlying mortgages. The stated contractual final maturity of the mortgage loans underlying our portfolio of agency securities ranges up to 40 years, but the expected maturity is subject to change based on the actual and expected future prepayments of the underlying loans. As of June 30, 2011 and December 31, 2010, the average final contractual maturity of the agency securities in our investment portfolio was 21 and 22 years, respectively. The estimated weighted average months to maturity of the agency securities in the table below are based upon our prepayment expectations, which are estimated based on assumptions for different securities using a combination of third-party services, market data and internal models. The third-party services estimate prepayment speeds using models that incorporate the forward yield curve, mortgage rates, current mortgage rates of the outstanding loans, loan age, volatility and other factors. As market conditions are changing rapidly, we use judgment in making adjustments to our models for some products. Various market participants could use materially different assumptions.

The following table summarizes our agency securities classified as available-for-sale, at fair value, according to their estimated weighted average life classifications as of June 30, 2011 and December 31, 2010 (in thousands):


	As of June 30, 2011							As of December 31, 2010
Weighted Average Life	Fair Value		Amortized Cost		Weighted Average Coupon			Fair Value		Amortized Cost		Weighted Average Coupon
Less than or equal to one year	$	43,212	$	43,350		3.81	%	$	—	$	—		—
Greater than one year and less than or equal to three years		1,056,763		1,035,249		4.95	%		133,123		132,520		5.05	%
Greater than three years and less than or equal to five years		4,188,329		4,134,240		4.48	%		3,841,282		3,821,992		4.92	%
Greater than five years		34,390,359		34,214,673		4.19	%		9,479,136		9,526,980		4.31	%

Total	$	39,678,663	$	39,427,512		4.24	%	$	13,453,541	$	13,481,492		4.49	%

The weighted average life of our interest-only and principal-only securities was 5.2 and 6.2 years as of June 30, 2011 and December 31, 2010, respectively.

The constant prepayment rate (“CPR”) reflects the percentage of principal that is prepaid over a period of time on an annualized basis. In general, while there are various factors that impact the rate of prepayments, as interest rates rise, the rate of refinancings typically declines, which may result in lower rates of prepayment and, as a result, a lower portfolio CPR. Conversely, as interest rates fall, the rate of refinancings typically increases, which may result in higher rates of prepayment and, as a result, a higher portfolio CPR. As of June 30, 2011, our portfolio was purchased at a net premium.

In determining the estimated weighted average months to maturity of our agency securities and the yield on our agency securities, we have assumed that the CPR over the remaining projected life of our aggregate investment portfolio is 10% as of June 30, 2011. We make different prepayment assumptions for the individual securities that comprise the investment portfolio and these individual assumptions can differ materially from the average. There is also considerable uncertainty around prepayment speeds in this environment and actual speeds could differ materially from our estimates. Furthermore, GSE buyouts of loans in imminent risk of default, loans that have been modified, or loans that have defaulted will generally be reflected as prepayments on agency securities and also increase the uncertainty around these estimates. In addition, securities were purchased with different amounts of premiums and therefore the yield on some securities is more sensitive to changes in prepayment speeds.

RESULTS OF OPERATIONS

The following analysis of our financial condition and results of operations should be read in conjunction with our interim consolidated financial statements and the notes thereto. The tables below present our condensed consolidated balance sheets as of June 30, 2011 and December 31, 2010 and our consolidated statements of operations and key statistics for the three and six months ended June 30, 2011 and 2010 (in thousands, except per share amounts):


	As of
Balance Sheet Data:	June 30, 2011		December 31, 2010
Investment portfolio, at fair value	$	39,925,707	$	13,510,280
Total assets	$	43,636,570	$	14,475,829
Repurchase agreements and other debt	$	33,566,899	$	11,753,019
Total liabilities	$	38,859,924	$	12,903,765
Total stockholders’ equity	$	4,776,646	$	1,572,064
Net asset value per common share as of period end(1)	$	26.76	$	24.24


	For the three months ended June 30,						For the six months ended June 30,
Consolidated Statement of Operations Data:	2011			2010			2011			2010
Interest income	$	264,728		$	50,589		$	429,221		$	89,386
Interest expense		63,816			17,348			99,464			32,858

Net interest income		200,912			33,241			329,757			56,528

Gain from sale of agency securities, net		93,892			29,585			98,112			56,993
Loss from derivative instruments and trading securities, net		(100,013	)		(21,867	)		(88,484	)		(15,947	)

Total other income, net		(6,121	)		7,718			9,628			41,046

Management fees		12,423			2,314			20,877			4,098
General and administrative expenses		4,546			1,787			7,143			3,468

Total expenses		16,969			4,101			28,020			7,566

Net income	$	177,822		$	36,858		$	311,365		$	90,008

Net income per common share—basic and diluted	$	1.36		$	1.23		$	2.82		$	3.28

Weighted average number of common shares outstanding—basic and diluted		130,467			29,872			110,496			27,451

Dividends declared	$	1.40		$	1.40		$	2.80		$	2.80


	For the three months ended June 30,						For the six months ended June 30,
Other Data:	2011			2010			2011			2010
Average agency securities, at cost	$	31,552,263		$	5,886,806		$	25,480,054		$	4,993,331
Average agency securities, at cost—percent of par value		104.4	%		104.1	%		104.4	%		104.0	%
Average total assets, at fair value	$	34,442,961		$	6,498,247		$	27,519,559		$	5,545,264
Average repurchase agreements and other debt(2)	$	28,668,011		$	5,548,225		$	23,205,847		$	4,670,611
Average stockholders’ equity(3)	$	3,785,199		$	705,466		$	3,102,208		$	643,107
Average coupon(4)		4.55	%		5.20	%		4.55	%		5.19	%
Average asset yield(5)		3.35	%		3.44	%		3.37	%		3.58	%
Average cost of funds(6)		0.89	%		1.07	%		0.86	%		1.15	%
Average cost of funds—terminated swap amortization expense(7)		—			0.19	%		—			0.27	%
Average net interest rate spread(8)		2.46	%		2.18	%		2.51	%		2.16	%
Average actual CPR for securities held during the period		9	%		28	%		10	%		24	%
Average forecasted CPR as of period end		10	%		20	%		10	%		20	%
Leverage (average during the period)(9)		7.6:1			7.9:1			7.5:1			7.3:1
Leverage (as of period end)(10)		7.5:1			8.2:1			7.5:1			8.2:1
Annualized expenses % of average assets(11)		0.20	%		0.25	%		0.21	%		0.28	%
Annualized expenses % of average equity(12)		1.80	%		2.33	%		1.82	%		2.37	%
Net return on average stockholders’ equity(13)		18.8	%		21.0	%		20.2	%		28.2	%
Annualized economic return(14)		34.0	%		35.5	%		44.3	%		34.6	%

*	Average numbers for each period are weighted based on days on our books and records, all percentages are annualized.

(1)	Net asset value per common share was calculated by dividing our total stockholders’ equity by our number of shares outstanding.

(2)	Average repurchase agreement and other debt represents their daily weighted average balances, less amounts used to fund short-term investments in U.S. treasury securities.

(3)	Average stockholders’ equity calculated as the average month-end stockholders’ equity balance outstanding during the period.

(4)	Weighted average coupon for the period was calculated by dividing our total coupon (or cash) interest income on our agency securities by our daily weighted average agency securities.

(5)	Weighted average asset yield for the period was calculated by dividing our total interest income on our agency securities, including amortization of premiums and discounts, by our daily weighted average agency securities.

(6)

Weighted average cost of funds for the period was calculated by dividing our total interest expense by our daily weighted average repurchase agreements and other debt. Total interest expense excludes amortization expense related to the costs of the previously terminated interest rate swaps during the periods presented.

(7)	Represents amortization expense associated with interest rate swaps terminated in a prior period of $2.6 million and $6.3 million for the three and six months ended June 30, 2010, respectively,

(8)	Average net interest rate spread for the period was calculated by subtracting our weighted average cost of funds, net of interest rate swaps and terminated swap amortization expense, from our weighted average asset yield.

(9)

Leverage during the period was calculated by dividing the our daily weighted average repurchase agreements and other debt outstanding, less repurchase agreements for treasury securities, for the period by our average month-ended stockholders’ equity for the period. Average leverage for the three month period ended June 30, 2011 was 8.3x, pro forma, when average equity is adjusted to exclude the June 2011 follow-on equity offering that closed on June 28, 2011.

(10)	Leverage at period end was calculated by dividing the sum of the amount outstanding under our repurchase

agreements, net receivable/payable for unsettled agency securities and other debt by our total stockholders’ equity at period end.

(11)	Annualized expenses as a percentage of average total assets was calculated by dividing our total expenses by our average total assets on an annualized basis.

(12)	Annualized expenses as a percentage of average stockholders’ equity was calculated by dividing our total expenses by our average stockholders’ equity on an annualized basis.

(13)	Annualized net return on average stockholders’ equity for the period was calculated by dividing our net income by our average stockholders’ equity on an annualized basis.

(14)	Annualized economic return represents the sum of the change in net asset value over the period and dividends declared during the period over the beginning net asset value on an annualized basis.

Interest Income and Asset Yield

Interest income was $264.7 million and $50.6 million for the three months ended June 30, 2011 and 2010, respectively. Interest income was $429.2 million and $89.4 million for the six months ended June 30, 2011 and 2010, respectively. The year-over-year increases were due to an increase in our average investment portfolio, partially offset by a decline in our average asset yield.

Our average asset yield declined to 3.35% for the current three month period from 3.44% for the prior year three month period and to 3.37% for the current six month period from 3.58% for the prior year six month period as a result of acquiring lower yielding securities due to changes in portfolio composition. The average coupon of our investment portfolio declined to 4.55% for each of the current year periods from approximately 5.20% for the prior year periods, while the average amortized cost basis of our investment portfolio remained largely unchanged at 104.4% of par value for each of the current year periods compared to approximately 104.1% of par value for the prior year periods.

We amortize premiums and discounts associated with agency securities into interest income over the life of such securities using the effective yield method. The effective yield (or asset yield) on our agency securities is based on actual CPRs realized for individual securities in our investment portfolio through the reporting date and assumes a CPR over the remaining projected life of our aggregate investment portfolio of 10% and 20% as of June 30, 2011 and 2010, respectively. The actual CPR realized for individual securities in our investment portfolio was approximately 9% and 28% for the current and prior year three month periods, respectively, and 10% and 24% for the current and prior year six month periods, respectively. The year-over-year decrease in the actual CPR realized is due to the impact of buyouts of accumulated delinquent loans by the GSEs from mortgage pools collateralizing agency securities (“GSE Buyouts”) during the first half of 2010, which had the impact of increasing the average prepayment speed of our portfolio during the prior year period. The decrease in the forecasted CPR is primarily due a higher percentage of securities held that are collateralized by loans with favorable prepayment attributes as of June 30, 2011 relative to the prior period.

Additionally, pursuant to ASC 310-20, the yield on our adjustable rate securities assumes that the securities reset at a rate equal to the underlying index rate in effect as of the date we acquired the security plus the stated margin. Consequently, future reset rate assumptions incorporated in our asset yields may differ materially from future reset rates implied by the forward yield curve and the actual reset rates ultimately achieved. Further, notwithstanding changes to our actual and projected CPR assumptions, the lower our reset rate assumption is pursuant to ASC 310-20 than the current fixed rate in effect, the greater the rate of premium amortization we will recognize over the initial fixed rate period. Our adjustable rate portfolio was acquired for a premium above par value and most securities were acquired during a period of historically low index rates. Accordingly, the majority of the premium balance on our adjustable rate securities will be amortized prior to their first reset date, regardless of actual or forecasted prepayment speeds and changes in the underlying index rates prior to actual reset. Adjustable rate securities acquired during a different interest rate environment may experience a different premium amortization pattern even as current index rates remain near their historical lows. For adjustable rate securities held as of June 30, 2011, the weighted average coupon rate was 4.18%, the weighted average months to reset was 74 months and the weighted average reset rate assumption was 2.72%, which is based on a weighted average underlying index rate of 0.91% as of the date we acquired the securities and a weighted average margin of 1.81%.

Interest income for the current and prior year three month period is net of $78.9 million and $22.9 million, respectively, and for the current and prior year six month period is net of $126.9 million and $35.2 million, respectively, for net amortization of premiums and discounts on our investment portfolio. The unamortized premium balance of our aggregate investment portfolio, including the unamortized cost basis of our interest-only securities and net of discounts, was $1.7 billion and $626.3 million as of June 30, 2011 and December 31, 2010, respectively.

Leverage

Our leverage as of June 30, 2011 and December 31, 2010 was 7.0 and 7.5 times our stockholders’ equity, respectively. When adjusted for the net payable for agency securities purchased but not yet settled, our leverage ratio was 7.5 and 7.8 times our stockholders’ equity as of June 30, 2011 and December 31, 2010, respectively. Our actual leverage will vary from time to time based on various factors, including our Manager’s opinion of the level of risk of our assets and liabilities, our liquidity position, our level of unused borrowing capacity, over-collateralization levels required by lenders when we pledge agency securities to secure our borrowings and the current market value of our investment portfolio. In addition, certain of our master repurchase agreements and master swap agreements contain a restriction that prohibits our leverage from exceeding certain levels.

The table below presents our quarterly average and quarter end repurchase agreement and other debt balances outstanding and average leverage ratios for the three and six months ended June 30, 2011 and 2010 and December 31, 2010 (dollars in thousands):


	Repurchase Agreements and Other Debt						Average Daily Interest Rate on Amounts Outstanding			Average Interest Rate on Ending Amount Outstanding			Average Leverage(1)		Leverage as of Period End(2)		Leverage as of Period End, Net of Unsettled Trades(3)
Quarter Ended	Average Daily Amount Outstanding		Maximum Daily Amount Outstanding		Ending Amount Outstanding		Average Daily Interest Rate on Amounts Outstanding			Average Interest Rate on Ending Amount Outstanding			Average Leverage(1)		Leverage as of Period End(2)
March 31, 2010	$	3,787,583	$	4,651,115	$	4,651,115		0.22	%		0.21	%		6.5:1		7.6:1		7.9:1
June 30, 2010	$	5,548,225	$	6,634,342	$	6,634,342		0.26	%		0.28	%		7.9:1		8.4:1		8.2:1
December 31, 2010(5)	$	10,813,568	$	12,340,635	$	11,753,019		0.29	%		0.31	%		8.4:1		7.5:1		7.8:1
March 31, 2011(4)(5)	$	17,755,790	$	22,147,273	$	22,061,884		0.28	%		0.28	%		7.4:1		6.6:1		7.6:1
June 30, 2011(4)(5)	$	28,668,011	$	33,566,899	$	33,566,899		0.25	%		0.23	%		7.6:1		7.0:1		7.5:1

(1)	Average leverage for the period was calculated by dividing our daily weighted average repurchase agreements and other debt outstanding, less repurchase agreements for treasury securities, by the Company’s average month-ended stockholders’ equity for the period.

(2)	Leverage as of period end was calculated by dividing the amount outstanding under our repurchase agreements and other debt by our stockholders’ equity at period end.

(3)	Leverage as of period end, net of unsettled trades was calculated by dividing the sum of the amount outstanding under our repurchase agreements, net liabilities and receivables for unsettled agency securities and other debt by our total stockholders’ equity at period end.

(4)	Average leverage for the three months ended March 31 and June 30, 2011 was 8.2x and 8.3x, pro forma, when average equity is adjusted to exclude the March and June 2011 follow-on equity offering that closed on March 25 and June 28, 2011, respectively.

(5)	Average leverage for the period was higher than leverage as of p