The New York Stock Exchange day on 24 October 1929 was called Black Thursday, widely regarded as the opening day of the Wall Street Crash. Panic selling overwhelmed the market that morning.
The Dow Jones Industrial Average fell sharply, but a group of leading bankers bought major stocks to restore confidence temporarily. Their intervention helped stabilize prices for part of the session, although the broader crisis continued.
Black Thursday was followed by further major selling days, especially Black Monday on 28 October and Black Tuesday on 29 October. By the end of October, confidence in highly valued shares had collapsed.
The crash did not by itself create the entire Great Depression, but it damaged wealth, confidence and investment. Bank failures, falling demand and deflation deepened the economic contraction during the following years.