Which French bank's collapse triggered the Paris Bourse crash of 1882?

The collapse of the French bank Union Générale triggered the Paris Bourse crash of 1882.

Union Générale was founded in Lyon in 1875 and taken over in 1878 by Paul Eugène Bontoux. It attracted strong support among Catholic and monarchist circles and expanded rapidly through ambitious investments, including railways, insurance, utilities, and overseas ventures. Its growth was accompanied by aggressive stock-market speculation and financial overextension.

The bank was forced to suspend payments in January 1882. Its share price plunged from 3,040 francs on January 5 to 800 francs on January 14, intensifying panic across French markets. The failure caused a wider collapse on the Paris Bourse, with many brokers facing insolvency.

The Banque de France supplied emergency liquidity that helped prevent the exchange from closing. Around 14 of the Bourse’s 60 brokers were reportedly in immediate danger, and seven ultimately went bankrupt. The episode is sometimes confused with a failure of Société Générale or the Banque de France, but those institutions were not the bank whose collapse set off the crash. Union Générale’s failure also contributed to a recession that lasted through much of the decade.