Which 1929 trading day is known as Black Tuesday in U.S. stock-market history?

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Black Tuesday in U.S. stock-market history was October 29, 1929.

On Black Tuesday, investors traded roughly 16 million shares on the New York Stock Exchange, a record at the time. The Dow Jones Industrial Average lost nearly 12%, following major declines on Black Thursday and Black Monday.

The crash ended the speculative boom of the 1920s and helped mark the beginning of the Great Depression, although historians do not treat the crash alone as the sole cause of the worldwide economic collapse. Bank failures, falling demand, debt, and policy decisions also mattered.

Black Tuesday is often used as shorthand for the entire Wall Street Crash of 1929. The crash’s major trading days stretched from late October 1929, rather than occurring during only one session.

Source: Wikipedia · fact-checked Oct. 2026

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