On which date did the Wall Street Crash of 1929 begin with a record trading volume on the New York Stock Exchange?

The Wall Street Crash of 1929 began on Black Thursday, October 24, 1929, when panic selling produced record trading volume on the New York Stock Exchange.

The Dow Jones Industrial Average fell sharply that day, although a late recovery limited the closing loss. Prominent bankers purchased heavily traded shares in an effort to restore confidence, and the market temporarily stabilized. The intervention did not solve the underlying problems of excessive speculation, margin buying, and weakening economic conditions.

The crash continued on Black Monday and Black Tuesday, October 28 and 29. October 29 became the date most commonly associated with the crash, but October 24 was the first major panic day in the sequence. The crash helped mark the end of the 1920s bull market and preceded the Great Depression, though historians distinguish the stock-market collapse from the wider economic downturn.