According to the WSJ Fabrice Tourre is trying to get on with his life. Since he first emerged three years ago as the Goldman Sachs Group Inc. GS +0.58% employee at the center of one of the most bruising regulatory battles in the firm's history, Mr. Tourre has settled into the cloistered world of academia. He is pursuing a doctorate in economics at the
and working as a
teaching assistant. University of
The SEC sued Goldman and Mr. Tourre, then a vice president, in April 2010, alleging they misled investors on a collateralized-debt obligation called Abacus 2007-AC1 that produced big losses for investors and big gains for hedge-fund firm Paulson & Co. Mr. Tourre's emails formed a central part of the regulator's case and created a sensation on Wall Street. The messages disclosed both a sense of humor—in one email, he refers to himself as "the fabulous Fab"—and a keen awareness of the looming crisis….