Financier Bernie Madoff pleads guilty to one of the largest frauds in Wall Street's history.

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.

Wall Street is a street in the Financial District of Lower Manhattan in New York City. It runs eight city blocks between Broadway in the west and South Street and the East River in the east with a length of just under 2,000 feet. The term "Wall Street" has become a metonym for the financial markets of the United States as a whole, the American financial services industry, New York–based financial interests, or the Financial District. Anchored by Wall Street, New York has been described as the world's principal fintech and financial center.

March 12 is the 71st day of the year in the Gregorian calendar; 294 days remain until the end of the year.