Summary List PlacementOne of Reddit traders' hedge-fund targets — $3 billion Maplelane Capital — took a step back in May as it tries to dig out of its GameStop-caused hole. The fund, run by former Galleon Group portfolio manager Leon Shaulov, lost 2.7% last month and is down roughly 39% for the year, sources tell Insider. The manager lost 45% in January thanks to a short position against GameStop, which had its stock inflated by legions of Reddit-connected retail traders who were targeting to short squeeze another hedge fund, Melvin Capital.