Which day in October 1929 is known as Black Thursday?

Black Thursday was October 24, 1929.

On that day, panic selling struck the New York Stock Exchange after a sharp decline had already begun earlier in the month. The market lost about 11% at the opening, while a record 12.9 million shares changed hands. Trading volume overwhelmed the ticker system, leaving many investors waiting hours to learn current prices.

Bankers including Thomas W. Lamont, Albert Wiggin, and Charles E. Mitchell attempted to restore confidence by purchasing selected shares. Their intervention helped stabilize the market temporarily, but it did not end the crash. Selling intensified again on October 28, known as Black Monday, and October 29, known as Black Tuesday.

Black Thursday is therefore one stage of the 1929 Wall Street Crash, not the entire event. The crash severely damaged confidence and contributed to the economic crisis that developed into the Great Depression. A frequent error is choosing October 29, which is Black Tuesday rather than Black Thursday.