Which stock exchange was closed for four days during the October 1987 global market crash?

The Hong Kong Stock Exchange was closed for four days during the October 1987 global market crash.

Hong Kong’s market suffered an exceptionally severe collapse as the 1987 panic spread around the world. The exchange closed from 20 to 23 October 1987, partly to stop disorderly trading and allow the market infrastructure to cope with the turmoil. When trading resumed, prices remained under intense pressure.

The Hong Kong crash helped transmit fear to other financial centers. Investors watched markets across time zones, and losses in one region could influence sentiment in the next. The episode demonstrated how increasingly connected international markets had become.

The closure is sometimes confused with later temporary shutdowns elsewhere. The New York Stock Exchange did not close for four days during Black Monday, although trading was disrupted by extreme volume and later reforms introduced circuit breakers. Hong Kong’s four-day closure was one of the most memorable emergency responses to the 1987 crash.