Newest weapon in U.S. hunt for insider traders paying off

Former Barclays Plc director Steven McClatchey leaves the federal courthouse following his arrest earlier in the day on insider trading charges, in Manhattan, New York, U.S.

AMERICA: When plumber Gary Pusey pleaded guilty in May to insider trading, it was a victory not just for New York prosecutors but for a little-known squad inside the U.S. Securities and Exchange Commission that uses data analysis to spot unusual trading patterns.

Formed in 2010, the Analysis and Detection Center of the SEC's Market Abuse Unit culls through billions of rows of trading data going back 15 years to identify individuals who have made repeated, well-timed trades ahead of corporate news.