Bernie Madoff is arrested and charged with securities fraud in a $50 billion Ponzi scheme.

Bernard Lawrence Madoff was an American financial criminal and financier who was the admitted mastermind of the largest known Ponzi scheme in history, worth an estimated $65 billion. He was at one time chairman of the Nasdaq stock exchange. Madoff's firm had two basic units: a stock brokerage and an asset management business; the Ponzi scheme was centered in the asset management business.

A Ponzi scheme is a form of fraud that lures investors and pays profits to earlier investors with funds from more recent investors. Named after Italian confidence artist Charles Ponzi, this type of scheme misleads investors by either falsely suggesting that profits are derived from legitimate business activities, or by exaggerating the extent and profitability of the legitimate business activities, leveraging new investments to fabricate or supplement these profits. A Ponzi scheme can maintain the illusion of a sustainable business as long as investors continue to contribute new funds, and as long as most of the investors do not demand full repayment or lose faith in the non-existent assets they are purported to own.