Illustration: Inkee Wang for Bloomberg Businessweek
(Bloomberg Businessweek) -- Days before Bitcoin fell decisively below $40,000, and two months before his hedge fund went bankrupt, Su Zhu sat down for an interview in the Bahamas, one shoeless foot tucked under his leg. An investor as legendary as they come in the decade-old cryptocurrency industry, he had a message that matched his relaxed demeanor. “When there’s a lot of despair, you can start buying,” he said deadpan at a podcast...