Which exchange’s 1873 crash on May 9 helped trigger a wider European financial panic?

The Vienna Stock Exchange crash on May 9, 1873, helped trigger a wider European financial panic.

The date became known as Black Friday in Austria. A speculative boom had pushed up share and property prices, especially during a period of rapid industrial expansion and easy credit. When confidence broke, investors rushed to sell and several financial institutions failed.

The shock crossed borders through banks, railways, and international capital markets. The American phase of the Panic of 1873 followed later that year, after the failure of Jay Cooke & Company. Because the crisis had multiple causes and stages, historians do not reduce it to one exchange session, but Vienna’s May collapse was a crucial early turning point.