On which day did the Dow Jones crash begin in the 1929 Wall Street Crash?

The Dow Jones crash began on October 24, 1929, a day known as Black Thursday. Heavy selling on the New York Stock Exchange caused the Dow Jones Industrial Average to drop sharply, although major bankers temporarily supported prices.

The emergency intervention briefly calmed the market, but confidence did not return. Selling intensified on October 28, known as Black Monday, and October 29, known as Black Tuesday. The later declines made the crash a defining event in the beginning of the Great Depression.

A common mix-up is to identify October 29 as the start of the crash. Black Tuesday was the most famous early collapse, but October 24 marked the first major panic. The crash unfolded over several trading sessions rather than one isolated moment.

The Dow eventually reached a low in July 1932, falling roughly 89 percent from its 1929 peak. Economic contraction, bank failures, and unemployment made the wider crisis far more severe than the share-price decline alone.