What was the name of the 1929 U.S. stock-market crash’s final major panic day?

The final major panic day of the 1929 U.S. stock-market crash was called Black Tuesday.

Black Tuesday occurred on October 29, 1929, when roughly 16 million shares changed hands on the New York Stock Exchange. Prices plunged as investors rushed to sell, completing a dramatic collapse that had begun several days earlier. The Dow Jones Industrial Average lost about 12% that day.

Black Tuesday is commonly treated as the symbolic end of the speculative boom on Wall Street, although prices continued falling afterward. The crash helped deepen the Great Depression, but historians do not generally describe it as its sole cause. Black Thursday, October 24, marked an earlier panic, while Black Monday and Black Tuesday in the following week were separate labels for the selling wave.