What was the name of the market collapse that began on October 24, 1929?

The market collapse that began on October 24, 1929, was the Wall Street Crash of 1929.

October 24 became known as Black Thursday after heavy selling overwhelmed the New York Stock Exchange. Bankers and major financiers temporarily restored confidence by buying leading shares, but the relief did not last. Selling intensified on October 28 and October 29, later known as Black Monday and Black Tuesday.

The crash followed years of rising share prices, widespread margin buying, and optimistic expectations about economic growth. When prices began falling, leveraged investors faced demands for additional cash and were forced to sell. The resulting contraction helped deepen the Great Depression, although historians distinguish the market crash from the broader economic depression.

The crash is often confused with Black Tuesday alone. Black Tuesday was the most famous day of the episode, while the Wall Street Crash refers to the wider sequence of market declines in late October 1929.