Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
Piovanetti Francesco
  2. Issuer Name and Ticker or Trading Symbol
LUMINENT MORTGAGE CAPITAL INC [LUM]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
CITY VIEW PLAZA I, SUITE 800, 165KM, 1.2
3. Date of Earliest Transaction (Month/Day/Year)
08/30/2007
(Street)

GUAYNABO, PR 00968
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 12/28/2007   P   100,000 A $ 0.87 100,000 I (1) As a managing member and president of Arco Capital Management LLC.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Capital Stock Warrants $ 0.18 08/30/2007   P   38,869,532 (2)   08/30/2007 08/30/2012 Common Stock (2) (2) 38,869,532 (2) I As a member and President of ACM - the external Manager of Arco Capital Corporation (3)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Piovanetti Francesco
CITY VIEW PLAZA I, SUITE 800
165KM, 1.2
GUAYNABO, PR 00968
  X   X    

Signatures

 /s/ Francesco N. Piovanetti,   02/14/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The Reporting Person reports this purchase by Arco Capital Management LLC ("ACM") of 100,000 shares of Class A Common Stock of Luminent Mortgage Capital Inc. ("Luminent"), which was previously reported on Form 3 filed by ACM on December 28, 2007. The Reporting Person directly owns a membership interest in ACM and may deemed to beneficially own the shares of Class A Common Stock that are owned by ACM. The Reporting Person disclaims beneficial ownership of any outstanding shares of Class A Common Stock that is not directly owned by the Reporting Person.
(2) Francesco Piovanetti owns a membership interest in ACM. ACM directly and indirectly owns shares of Class A Common Stock of Luminent. ACM, and therefore Mr. Piovanetti, may also be deemed to indirectly beneficially own warrants to acquire the Luminent Class A Common Stock owned by Arco Capital Corporation Ltd. ("Arco") pursuant to a Warrant Agreement. As previously reported on Schedule 13D on August 21, 2007, as amended on Schedule 13D/A on September 26, 2007 and as further Amended on Schedule 13D/A on January 31, 2008, under the Warrant Agreement, Arco has the right to purchase, at a price of $0.18 per share, at any time until the fifth anniversary of the date of the warrant Agreement, a combination of Class A Common Stock and shares of a newly-created class of non-voting preferred stock of Luminent that in the aggregate represent 51% of the equity of Luminent. So long as Luminent's 8.125% Convertible Senior Notes due 2027 (the "Convertible Notes") are outstanding and the holders of the Convertible Notes have the right to cause their Convertible Notes to be redeemed following a change in control of Luminent, the maximum number of shares of Class A Common Stock that may be issued to Arco upon the exercise of the Warrants granted under the Warrant Agreement is the number that, together with all other shares of Class A Common Stock beneficially owned by Arco, would result in Arco owning 49% of the issued and outstanding Class A Common Stock of Luminent. Based upon 43,172,839 shares of Class A Common Stock outstanding, if Arco were deemed to be the beneficial owner of the 2,716,795 shares of Common Stock beneficially owned by certain affiliated and associated persons of Arco, the maximum number of shares of Class A Common Stock that Arco could acquire upon exercise of the Warrants would be 36,152,737 (representing approximately 45.6% of the shares of Class A Common Stock that would be outstanding following the exercise).
(3) Mr. Piovanetti disclaims beneficial ownership over the Class A Common Stock beneficially owned by Arco except to the extent of his pecuniary interest therein.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.