The first major selling day of the 1929 New York Stock Exchange crash is commonly called Black Thursday.
Black Thursday occurred on October 24, 1929. The Dow Jones Industrial Average opened lower and fell sharply as panic selling spread. A group of major bankers later bought heavily traded stocks in an attempt to restore confidence, and the market recovered much of its intraday loss by the close. That intervention briefly calmed investors, but it did not end the crisis.
Selling returned with greater force the following week. Black Monday came on October 28, and Black Tuesday followed on October 29, when trading volume reached a record for the period and prices collapsed again. These names describe consecutive stages of the same historic market breakdown.
Black Thursday is sometimes confused with Black Tuesday because Black Tuesday became the most famous date. The earlier day is important because it showed that the speculative boom had entered a severe and sustained reversal.