The New York Stock Exchange experienced Black Tuesday on October 29, 1929.
Black Tuesday was the most famous day of the Wall Street Crash. Approximately 16 million shares changed hands, a record at the time, as investors rushed to sell. The panic followed Black Thursday on October 24 and a temporary rally on October 28, known as Black Monday.
The crash did not by itself create every condition of the Great Depression, but it sharply damaged confidence and wealth. Bank failures, falling demand, debt problems, and policy responses deepened the economic collapse that followed. Another common mix-up is treating Black Tuesday as the only crash day; the 1929 collapse unfolded over several sessions and continued after October 29.