Which U.S. stock-market crash followed the 1987 record and became known as Black Monday?

The U.S. stock-market crash known as Black Monday occurred on October 19, 1987.

On that date, the Dow Jones Industrial Average dropped 508 points, a fall of 22.6 percent. It remains the largest one-day percentage decline in the Dow’s history. The sell-off followed a period of rapid market growth and occurred amid concerns about economic conditions, interest rates, international currency tensions, and trading mechanisms.

Computerized portfolio insurance and other automated strategies may have amplified selling, though no single explanation accounts for every feature of the crash. Unlike the 1929 collapse, Black Monday did not lead to a comparable decade-long depression in the United States. The economy continued growing after a period of market and policy adjustment.

The date is often confused with Black Tuesday in 1929. Black Monday in 1987 was a global event, while Black Tuesday refers specifically to October 29, 1929, in the Wall Street crash sequence.