Betting against stocks is paying off this week. In the last week, Crispin Odey of Odey Asset Management has gained 5% in his European fund, he told The Financial Times. In the last seven days through February 26, Russell Clark's Horseman Global fund has gained about 6%, Bloomberg reported. Both gains are reversals from dismal annual performances in 2019, when the S&P 500 gained 29%. Read more on Business Insider. Bearish hedge fund managers are reaping millions by betting against the market amid the fastest correction since the Great Depression.