Steve Cohen's hedge fund Point72 lost nearly 15% this year as GameStop shares skyrocketed, according to the New York Times. It had around $19 billion under management.Melvin Capital was investing some money on Point72's behalf, the Times reported.Citron Research's Andrew Left threw in the towel on Wednesday, saying he had closed most of the firm's short position when GameStop's stock traded at about $90 at a loss of 100%.Melvin Capital suffered heavy losses during the GameStop saga, causing Citadel and Point72 to inject almost $3 billion into the ailing hedge fund. Melvin attracted the ire of Reddit users on Wall Street Bets, but the exact scale of its losses are not yet known.D1 Capital Partners has lost around 20% in January as a result of the GameStop saga, Bloomberg reported, citing people briefed on the situation. Dan Sundheim's fund controlled about $20 billion at the start of the year.Maplelane Capital shed around 33% this month after shorting GameStop, Bloomberg reported, citing investors. The $3.5 billion hedge fund had bet against GameStop using put options — contracts which let investors bet a stock price will fall.Candlestick Capital Management's losses were in the low-to-mid teens in percentage terms, according to the Wall Street Journal. The $3 billion hedge fund based in Greenwich, CT was started by a former Citadel portfolio manager.