Ken Griffin’s Citadel churned out a record $16 billion in profit for clients last year, outperforming the rest of the industry and eclipsing one of history’s most successful financial plays. The top 20 hedge fund firms collectively generated $22.4 billion in profit after fees, according to estimates by LCH Investments, a fund of hedge funds. Citadel’s gain was the largest annual return for a hedge fund manager, surpassing the $15 billion that John Paulson generated in 2007 on his bet against subprime mortgages. This was described as the “greatest trade ever” in a subsequent book of the same name by Gregory Zuckerman. ... (full story)