Bernie Madoff, Mastermind of the Largest Ponzi Scheme in History, Dies in Prison at Age 82 Bernard (Bernie) Madoff, mastermind of the largest Ponzi scheme in history, died this morning at the Federal Medical Center in Butner, North Carolina. He was serving a 150-year prison sentence. Madoff would have been 83 on April 29. A source told the Associated Press that Madoff had died of natural causes. Madoff ran his scheme undetected by regulators and law enforcement for more than four decades until he began to run out of money to meet client redemption requests during the financial crash of 2008 and confessed to his sons. The sons turned him in to the FBI. The case became a national scandal that tarnished both the reputation of the SEC as well as JPMorgan Chase.