Which 1929 trading day is commonly called Black Tuesday in the Wall Street Crash?

Black Tuesday in the Wall Street Crash was 29 October 1929. On that day, investors traded roughly 16 million shares on the New York Stock Exchange as prices plunged and panic intensified.

Black Tuesday followed Black Thursday on 24 October and Black Monday on 28 October. Those sessions formed the most famous phase of the 1929 crash, although the market’s decline continued for years and did not reach its ultimate low until 1932.

The crash exposed the fragility of a speculative boom built partly on buying shares with borrowed money. Falling prices forced margin calls, which required investors to sell more holdings and placed further pressure on the market. The event became closely associated with the Great Depression, but historians generally describe the depression as the result of multiple interacting causes rather than one trading day alone. Black Tuesday is sometimes confused with Black Monday in 1987; the dates and market episodes are entirely different.