 Shares of Prospect Capital Co. NASDAQ:PSEC shot up 9.5 on Thursday following insider buying activity. The company traded as high as 4.97 and last traded at 4.82, 4,678,472 shares changed hands during trading. An increase of 30 from the average session volume of 3,588,178 shares. The stock had previously closed at 4.40. Specifically, CEO John ... 