The stock-market crash that began on October 24, 1929, is commonly called Black Thursday. On that day, panic selling caused the New York Stock Exchange to experience exceptionally heavy trading and a sharp early decline.
A group of leading bankers bought large quantities of blue-chip shares in an attempt to restore confidence, and prices partially recovered before the session ended. That intervention did not solve the underlying problems, including excessive speculation, purchases on margin, and weakening economic conditions.
The crash continued through the following week. Black Monday came on October 28, and Black Tuesday followed on October 29, when selling intensified. The market’s collapse contributed to the wider Great Depression, though historians distinguish the immediate crash from the many banking and economic failures that followed.