October 19, 1987

October 19, 1987, known as Black Monday, was a significant stock market crash when U.S. stock indices, especially the Dow Jones Industrial Average, plummeted by about 22%, the largest one-day percentage decline in history. This sudden drop was caused by a combination of automated trading systems, overvalued stocks, and investor panic. The crash impacted global markets, leading to widespread financial concern. Despite the severity, the market recovered in the following months, and the event prompted reforms to improve market stability and prevent similar crashes in the future.