https://www.reuters.com/article/us-retail-trading-gamestop-losses/gamestop-short-squeeze-losses-at-12-5-billion-ytd-ortex-data-idUSKBN2A12XA

Shorting shares in GameStop, the video game retailer at the centre of the ongoing retail trading frenzy, cost hedge funds a total $12.5 billion over January, data from financial analytics firm Ortex showed on Monday.