Which European stock index fell 10.8% on Black Monday in 1987?

The FTSE 100 fell 10.8% on Black Monday, October 19, 1987. London’s benchmark index was swept into the worldwide market sell-off that began in Asia and intensified as trading moved through Europe and North America.

The FTSE 100 had been introduced in 1984 and tracks 100 major companies listed on the London Stock Exchange. Its Black Monday fall reflected the global nature of the crash: investors were reacting to connected markets, currency pressures, interest-rate concerns and rapid program-driven selling rather than to a single London-only announcement.

The DAX in Germany and France’s CAC 40 also suffered severe losses, which can make the indexes easy to confuse. The FTSE 100 is the specific London index asked about here. Trading was later affected by further market disruption, and the crash led to reforms including coordinated circuit breakers and stronger market oversight.