#黑色星期一# 6.5小时蒸发5000亿美元！华尔街最惊心动魄的一天

Core Viewpoint - The article discusses the significant stock market crash on October 19, 1987, known as "Black Monday," where the Dow Jones Industrial Average (DJIA) plummeted by 22.6%, marking the largest single-day percentage drop in its history [1][7][19]. Group 1: Market Events Leading to the Crash - On October 14, 1987, the U.S. Treasury Secretary announced an oil embargo against Iran, which went largely unnoticed by the public but caused rising bond yields and growing unease among traders [3]. - By October 16, the DJIA had already experienced a notable drop of 108 points, setting the stage for the impending disaster [3]. - On the morning of October 19, the market opened to overwhelming sell orders, with the DJIA dropping 67 points within minutes and continuing to decline throughout the day [5][8]. Group 2: Impact of the Crash - The DJIA's drop of 508 points on October 19 represented a 22.6% decline, far exceeding the 12.8% drop during the Great Depression in 1929 [7][8]. - The crash had a global impact, with the Hang Seng Index in Hong Kong falling by 11.3%, and other markets in Tokyo, Singapore, and Australia also experiencing significant declines [8][10]. - European markets followed suit, with the FTSE 100 in London dropping by 10.8% and other major indices in Frankfurt and Paris also seeing substantial losses [10]. Group 3: Responses and Recovery - In response to the crash, the U.S. government initiated a market rescue operation, with the Federal Reserve under Alan Greenspan quickly moving to provide liquidity and support to the financial system [12][14]. - The market began to recover rapidly, with the DJIA regaining half of its losses by the end of 1987 and fully recovering within two years [15][19]. - The crash prompted regulatory changes, including the introduction of circuit breakers to prevent similar occurrences in the future [15][19].