The failure of Jay Cooke & Company in 1873 helped trigger the Panic of 1873.
Jay Cooke & Company suspended payments on September 18, 1873, after it could not sell enough securities connected to the Northern Pacific Railway. The firm’s collapse alarmed depositors and investors because it had been a prominent American financier of government debt and railroad expansion.
The panic spread through U.S. banks and businesses. The New York Stock Exchange closed temporarily, credit contracted, and many railroads entered bankruptcy or financial reorganization. The downturn was linked to a broader international crisis that had already erupted in Vienna earlier in the year.
The Panic of 1873 did not result from Jay Cooke alone. Railroad overbuilding, speculative investment, tight credit, and international financial instability all contributed. The prolonged economic weakness that followed is often called the Long Depression, though historians debate how closely the American and European downturns matched in timing and severity.