6. Black Monday (1987)
On October 19, 1987, known as Black Monday, the Dow Jones Industrial Average (DJIA) plummeted by 508 points, a 22.6% drop, marking the largest single-day percentage decline in its history. This sudden crash wiped out approximately $500 billion in market value. The sell-off was triggered by a combination of factors, including geopolitical tensions, rising interest rates, and the proliferation of computerized trading programs that accelerated the decline. The event underscored the interconnectedness of global financial markets and led to the implementation of circuit breakers to prevent future market crashes. (britannica.com)
