Remember, back in November, when there were all those rumors about a hedge fund in trouble, and even though Citadel vehemently—almost suspiciously so—denied that it was them, people were still kind of like “Sure, it’s not you, Citadel, we believe you” wink, wink? Apparently, according to Bloomberg, they weren’t bluffing. (SAC Capital pretty much cleared its name, too, but who cares about looking good to other hedgies when you’ve got a $54 million party-foul to deal with?)
Hedge funds run by Steven Cohen and Kenneth Griffin gained more than 30 percent last year, the industry’s best performance since 2003, while Goldman Sachs Group Inc.’s flagship fund declined for the first time in seven years.
Cohen’s SAC Capital Advisors LLC returned 34 percent and Griffin’s Citadel Investment Group LLC also topped 30 percent, helped by energy bets it took over after Amaranth Advisors LLC collapsed in September, according to investors in the funds. Goldman’s Global Alpha Fund ended the year with a 6 percent loss.
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Citadel, SAC Funds Double Returns of Peers as Goldman Declines [Bloomberg]

Today’s edition of Platt’s Energy Trader takes in depth look at how Citadel and JPMorgan took over Amaranth’s energy portfolio, turning Amaranth’s losses into profit. The basic outline of the story is that after gas prices sank and the spread between March 2007 and April 2007 natural gas futures shrank, Amaranth found itself in the troubling position of having to sell off assets, in part to meet the margin calls of its broker, which happened to be JP Morgan. Citadel and JP Morgan then teamed up and bought the portfolio at a steep discount—a move that some at the time thought looked like a bailout of Amaranth.