Founder and CEO of FTX, a once-iconic cryptocurrency exchange worth billions of dollars. After a liquidity crunch -- the equivalent of a run on the crypto bank -- it was discovered that the young billionaire, known widely as SBF, had presided over a financial exchange that was using customer funds to cover losses at another of his companies, Alameda Research. Continually placing large speculative bets, the investment banking arm of SBF's enterprise essentually stole money from FTX's customers to gamble with until the Ponzi scheme came unraveled.