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Second Ex-Citadel Worker Guilty in Trade-Secrets Case

A former Citadel LLC employee whose job was to research and develop high-frequency trading strategies pleaded guilty to obstructing a probe into the theft of trade secrets from the Chicago-based investment firm.

Sahil Uppal, 26, entered his plea today before U.S. District Judge Charles Norgle in Chicago, five days after co-defendant Yihao Pu pleaded guilty to taking proprietary information from Citadel and to stealing computer code from a New Jersey company. Their trial had been set for Sept. 2.