Hedge Fund and Insider Trading News: Bill Ackman, Jeffrey Smith, Christopher Hohn, Elliott Management, Citadel LLC, Point72 Asset Management, Delta Air Lines, Inc. (DAL), Zymeworks Inc. (ZYME), Apple Inc (AAPL), and More

Hedge-fund giant Citadel made $16 billion for its investors last year, the largest annual gain ever made by a hedge-fund firm, according to research from LCH Investments.

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