Sheelah Kolhatkar

Sheelah Kolhatkar is a staff writer at The New Yorker, where she writes about Wall Street, Silicon Valley, economics, and politics. She has written about the Uber C.E.O. Dara Khosrowshahi, the billionaire hedge-fund founder Paul Singer, the rise of artificial intelligence, and the future of the American worker.

BLACK EDGE

Sheelah Kolhatkar

Cohen's name is well-known in the billionaire slashtrader circles, and his once-mighty SAC Capital, the"indestructible" hedge fund, used to be huge&nb...