A few notable hedge fund loss recently

Citadel: Its flagship Wellington multi-strategy fund lost about 2% last week. This came despite positive performance earlier in the year (bringing YTD to ~2.9% through end-February). 

ExodusPoint: The multi-strategy fund erased all its year-to-date gains last week, effectively wiping out the ~2.6% it had built through February 

Millennium Management lost ~$1.5 billion (erasing most of its ~2% YTD gain).