Snatch Shares of ARNA 10.7% Cheaper Than the CEO Did

There's an old saying on Wall Street about insider buying: there are many possible reasons to sell a stock, but only one reason to buy. Back on August 10, Arena Pharmaceuticals Inc's CEO, Amit Munshi, invested $52,915.00 into 1,000 shares of ARNA, for a cost per share of $52.91..