Nov. 10 (Bloomberg) -- SAC Capital Advisors LLC, the hedge- fund firm run by Steven Cohen, reviewed its buying and selling of stocks cited in the Galleon Group LLC insider-trading cases and found nothing suspicious, according to one of its investors.

SAC, which oversees $14 billion, also told the investor that neither it nor any employees had received subpoenas related to the cases. Clients have contacted the Stamford, Connecticut- based firm since prosecutors said last week that a former SAC portfolio manager agreed to plead guilty and cooperate with their probes, said the investor, who asked not to be identified because the information is private.

“SAC has a built and maintained AAA-grade infrastructure, including compliance,” said Ron Geffner, a lawyer at New York- based Sadis & Goldberg LLP, whose clients include hedge funds. Geffner, who isn’t representing SAC, said it was understandable that the firm would review the trading.

The former employee, Richard Choo-Beng Lee, worked at SAC from 1999 to 2004, according to the information filed by prosecutors that details the charges against him. He left to join New York-based Stratix Asset Management LLC, founded by former SAC traders Ian Goodman and Richard Grodin.

Investigators are expected to examine trading at SAC, the Wall Street Journal reported Nov. 7, citing people familiar with the matter. Jonathan Gasthalter, a spokesman for SAC, declined to comment.

In return for helping the government, Lee won’t be further prosecuted for any insider trading he may have committed at SAC or Stratix, according to his Oct. 8 plea agreement. The deal also covers his time at Spherix Capital LLC, the San Jose, California-based firm he co-founded in 2007 with Ali Far after Stratix closed. He sought a job at SAC this year after shutting Spherix in March, a person familiar with the matter said.

Quadrum Subpoena

Far, 47, is also cooperating after pleading guilty. He’s a former portfolio manager at Galleon.

Neither Grodin nor Goodman has been accused of wrongdoing. The firm Grodin started after Stratix, Quadrum Capital Management LLC, has been subpoenaed. A subpoena is a request for information and doesn’t imply wrongdoing.

Twenty people have been charged in the insider-trading case since the Oct. 16 arrest of Raj Rajaratnam, founder of New York- based Galleon. The government has said the defendants netted $53 million in illegal trades going back as far as 2006 and covering about a dozen stocks.

Stocks cited by prosecutors include Advanced Micro Devices Inc., Google Inc., Intel Corp., International Business Machines Corp. and Hilton Hotels Corp.

To contact the reporters on this story: Katherine Burton in New York at kburton@bloomberg.net; Saijel Kishan in New York at skishan@bloomberg.net

Last Updated: November 10, 2009 00:01 EST