Jay Cooke & Company’s collapse in 1873 is closely associated with the start of the Panic of 1873 in the United States.
Jay Cooke & Company was a major investment bank that helped finance the Northern Pacific Railway. On September 18, 1873, the firm failed after it could not sell enough railway bonds to meet its obligations. The failure shocked investors and contributed to a suspension of trading on the New York Stock Exchange.
The panic reflected deeper problems than one bank’s collapse. Railway overbuilding, speculative financing, falling asset prices, and tight credit had created vulnerabilities in both the United States and Europe. The crisis spread through banks and businesses, producing a long depression often called the Long Depression.
The Panic of 1873 also exposed the risks of relying heavily on railway expansion and bond sales. More than 100 US railroads failed during the broader downturn, and unemployment rose sharply. The event is sometimes dated differently in Europe, where the Vienna stock-market crash of May 1873 is treated as an important starting point. Jay Cooke’s failure specifically marks the US financial shock.