SAC's U.S. Stock Holdings Shrank by $2 Billion Amid Probe

... Sirius XM Radio Inc. (SIRI) , which shrank by $163.7 million as the firm sold 53.2 million shares. SAC, based in Stamford, Connecticut, was accused by the U.S. government in a July 25 indictment of engaging in an unprecedented insider-trading scheme ...

http://www.bloomberg.com/news/2013-08-15/sac-s-u-s-stock-holdings-shrank-by-2-billion-amid-probe.html