LOS ANGELES (MarketWatch) -- After a multiyear probe into alleged insider trading at SAC Capital Advisors LP, federal prosecutors are set to file criminal charges as early as this week, The Wall Street Journal reported late Tuesday, citing unnamed sources. However prosecutors weren't planning to charge the hedge fund's founder Steven Cohen, the report said. Cohen is facing a civil administrative action from the Securities and Exchange Commission for allegedly fostering a corporate culture that turned a blind eye to insider trading. Sources said there were "no signs of settlement talks that would avert the charges" against SAC, according to the report.