Black Monday, also recognized in some regions as Black Tuesday due to time zone variations, marked a significant and largely unforeseen stock market crash that occurred globally on Monday, October 19, 1987. This event saw the S&P 500 index plummet by 20.47%, representing the largest single-day decline in its history. Similarly, the Dow Jones Industrial Average experienced its most substantial one-day drop, falling by 22.6%. The sheer scale of this
crash ignited widespread concerns about prolonged economic instability, with some fearing a potential return to conditions reminiscent of the Great Depression. The severity of Black Monday ultimately led to the implementation of new protective measures, such as circuit breakers, designed to prevent similar catastrophic events in the future. It took approximately two years for the Dow Jones to fully recover to its pre-crash levels.
The Unfolding Crisis: Pre-Crash Indicators and the Day Itself
Leading up to Black Monday, the stock market had enjoyed a robust five-year bull run. The S&P 500 index had more than tripled, climbing from 102.42 on August 12, 1982, to 336.77 by August 25, 1987. The Dow Jones Industrial Average mirrored this trend, soaring from 776 in August 1982 to a peak of 2,722 in August 1987. This bullish sentiment was not confined to the U.S., as market indices worldwide experienced an average rise of 296% during this period. However, cracks began to appear in the days immediately preceding the crash. On Wednesday, October 14, 1987, the U.S. House Committee on Ways and Means introduced legislation aimed at reducing tax benefits associated with mergers and leveraged buyouts. Concurrently, unexpectedly high trade deficit figures released by the U.S. Department of Commerce further weakened the dollar, pushed interest rates higher, and drove stock prices down.
The Dow Jones Industrial Average dropped 95.46 points (3.81%) on October 14, closing at 2,412.70. The following day, it fell another 57.61 points (2.39%), bringing its total decline to over 12% from its August 25 all-time high. By Friday, October 16, the DJIA had fallen an additional 108.35 points (4.6%). This initial decline on October 14 was the earliest significant drop among all countries that would later be impacted by Black Monday. The S&P 500 index collectively lost 9% over this week. On Black Monday itself, the DJIA plummeted 508 points, a 22.6% loss, closing at 1,738.74 from an open of 2,246.74. The S&P 500 fell 20%, and the Wilshire 5000 index dropped 18%. The sheer volume of sell orders overwhelmed computer and communication systems, leading to trading halts and delays for many stocks on the NYSE, with 195 out of 2,257 listed stocks experiencing such interruptions.
Explanations and Global Repercussions
Several factors have been proposed to explain the initial fall in stock prices. These include a fear that stocks were significantly overvalued and due for a correction, persistent U.S. trade and budget deficits, and rising interest rates. The decline of the dollar, coupled with a lack of confidence in governmental efforts to stabilize it, also contributed. Doubts about the viability of the Louvre Accord, signed in February 1987 by leading industrial countries to coordinate monetary policy, created a crisis of confidence. The crash may have been exacerbated by portfolio insurance hedging, which used computer models to trigger large sales of index futures, and a self-reinforcing cycle of fear among investors.
The impact of Black Monday was truly global, affecting all twenty-three major world markets. The crash spread sequentially, starting in Asian markets (excluding Japan), then moving to Europe, the U.S., and finally Japan. Worldwide losses were estimated at US$1.71 trillion. While eight markets saw declines of 20-29%, three (Malaysia, Mexico, and New Zealand) dropped by 30-39%, and three more (Hong Kong, Australia, and Singapore) fell by over 40%. Austria was the least affected, with an 11.4% decline, while Hong Kong experienced the most severe drop at 45.8%. Out of the nineteen largest industrial countries, nineteen saw declines greater than 20%. The degree to which the crash affected the broader economy depended heavily on each nation's monetary policy response. Central banks in the United States, West Germany, and Japan provided market liquidity to prevent debt defaults, limiting the impact on their real economies. In contrast, New Zealand's refusal to loosen monetary policy led to sharply negative and long-term consequences for its financial markets and real economy.
