SEC Ups Its Game to Identify Rogue Firms

The list is the low-tech product of a high-tech effort by the SEC to crack down on fraud at hedge funds and other investment firms. After the agency failed to detect the $17.3 billion Ponzi scheme by Bernard L. Madoff, who wowed investors with steady returns over several decades, SEC officials decided they needed a way to trawl through performance data and look for red flags that might signal a possible fraud.

In 2009, the SEC began developing a computer-powered system that now analyzes monthly returns from thousands of hedge funds. Officials won't say exactly how it works or how much it cost to build, but the agency has announced four civil-fraud lawsuits filed as a result of what it calls the "aberrational performance initiative."

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Encouraged by the results so far, SEC officials are widening the computer-powered scrutiny to mutual funds and private-equity funds. That means data on more than 20,000 funds are being fed into the SEC's computers or soon will be.