The U.S. stock-market crash that followed the collapse of Jay Cooke & Company in 1873 was the Panic of 1873.
Jay Cooke & Company, a major U.S. investment bank, failed in September 1873 after it could not sell enough bonds connected with the Northern Pacific Railway. The failure damaged confidence, and the New York Stock Exchange closed temporarily. Railroads had expanded rapidly through borrowing, making the financial system vulnerable when investment enthusiasm faded.
The panic spread across the Atlantic and contributed to a long international downturn often called the Long Depression. Banks failed, railroad construction slowed, businesses cut production, and unemployment rose. The duration and severity varied by country, so historians do not always define the downturn identically.
The crisis was not caused solely by Jay Cooke’s failure. Speculative railway finance, overexpansion, and European financial weakness were also important. The event is distinct from the Panic of 1893, another U.S. crisis involving railroads and banking two decades later.