Stock prices plunged in the New York market on 19 October 1987, triggering a global sell-off. The Nikkei also fell sharply the following day, in what was reported to be a situation attributed to program selling as the cause of the Dow's plunge.
On 19 October 1987, stock prices plunged in the New York market and markets worldwide crashed. The shock spread to the Nikkei, throwing the stock market into turmoil.
The Dow Jones Industrial Average fell 22.6% that day, its largest decline on record. In the Tokyo market the following day, the Nikkei plunged ¥3,836.48 from the previous day to ¥21,910.08, a record decline of 14.90%.
The Nikkei rebounded sharply by ¥2,037.32 on the 21st, bringing the global sell-off toward an end. Computerised program selling was cited as the cause of the Dow's plunge.