Madoff's two-decade frictionless Ponzi scheme
Bernie Madoff, a former NASDAQ chairman, ran a fake investment advisory business that reported steady returns of roughly 10–12% a year with almost no losing months. Feeder funds such as Fairfield Greenwich funneled billions to him. SEC examiners investigated repeatedly, including after Harry Markopolos's detailed complaints from 2000 onward, and never checked his trades with an independent counterparty. The fraud collapsed in December 2008 when redemption requests during the financial crisis exceeded incoming cash, leaving about $65 billion in paper losses.