What was the name of the October 29, 1929 trading day in the Wall Street Crash?

The October 29, 1929 trading day in the Wall Street Crash was called Black Tuesday.

On Black Tuesday, approximately 16 million shares changed hands on the New York Stock Exchange, a record at the time. The Dow Jones Industrial Average dropped about 12%, intensifying the collapse that had begun the previous week.

Black Thursday, October 24, had been the first major panic day, while Black Monday and Black Tuesday brought further dramatic declines. Together, these sessions destroyed investor confidence and helped mark the end of the speculative boom of the 1920s.

The crash itself did not single-handedly cause the Great Depression. Falling investment, bank failures, reduced consumption, debt, and policy decisions also played important roles. The Dow continued falling after 1929 and reached its low in 1932.