Which U.S. company’s failure helped trigger the Panic of 1873?

Jay Cooke & Company’s failure helped trigger the Panic of 1873 in the United States.

The investment bank announced on September 18, 1873, that it could not meet its obligations. Jay Cooke had heavily financed Northern Pacific Railway bonds, and difficulty selling those securities exposed the firm to a liquidity crisis. Its collapse damaged confidence in railroad finance and helped ignite a wider financial panic.

The New York Stock Exchange closed temporarily for the first time in its history, remaining shut from September 20 to September 29. Bank failures, falling investment, and railroad bankruptcies followed in the United States and Europe.

The panic was part of a broader international downturn sometimes called the Long Depression. It is distinct from the 1873 Vienna crash, although financial stress spread across connected markets. The episode also showed how railway speculation could transmit problems from one institution to the wider economy.