Which date marked the 1929 U.S. stock-market crash’s most famous trading-day collapse?

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October 29, 1929, marked the 1929 U.S. stock-market crash’s most famous trading-day collapse.

The date is widely known as Black Tuesday. Heavy selling overwhelmed the New York Stock Exchange, and the Dow Jones Industrial Average fell nearly 12% in one day. Trading volume reached a record that was not surpassed for decades.

Black Tuesday followed Black Thursday on October 24 and the sharp decline on October 28, often called Black Monday. These days formed the most dramatic opening phase of the Wall Street Crash, although the market continued to fluctuate afterward rather than falling in one uninterrupted motion.

The crash did not alone cause the Great Depression, but it badly damaged confidence and exposed weaknesses in the financial system. The Dow eventually fell much farther, reaching its bear-market low in July 1932. Thus, the famous date identifies the panic’s peak moment, not the end of the overall decline.

Source: Wikipedia · fact-checked Oct. 2026

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