1987 Stock Market Crash — famously known as Black Monday.
Background
• Date: October 19, 1987.
• The early 1980s saw a booming stock market fueled by economic recovery,
deregulation, and a surge in corporate takeovers.
• By mid-1987, stock valuations were stretched — the Dow Jones had risen 44% in
the first 8 months of the year.
• Investors were heavily using portfolio insurance (computer-driven trading
strategies meant to limit losses), but it had a hidden risk.
The Crash
• On Black Monday, the Dow Jones Industrial Average fell 508 points — a 22.6%
drop in one day.
(Still the largest single-day percentage drop in U.S. stock market history.)
• Global markets followed:
o Australia: -41.8% (Oct–Nov 1987)
o Hong Kong: -45.8%
o UK: -26.4%
o Canada: -22.5%
Causes
1. Overvaluation — Stock prices had far outpaced earnings.
2. Program Trading — Computer algorithms automatically sold large volumes of
stock when prices fell, accelerating the crash.
3. Investor Panic — As prices dropped, fear caused even more selling.
4. Rising Interest Rates — Higher bond yields drew money away from stocks.
5. Global Interconnection — Selling spread instantly across borders.
Economic Impact
• Short-term: Market panic, huge paper losses for investors.
• Medium-term: Unlike the Great Depression, the real economy was not severely
damaged.
• GDP growth slowed briefly, but there was no recession.
• Corporate profits remained relatively strong.
Government & Central Bank Response
• The Federal Reserve stepped in quickly to provide liquidity to banks and
reassure markets with the famous line:
“The Federal Reserve, consistent with its responsibilities as the nation’s central
bank, affirmed today its readiness to serve as a source of liquidity to support
the economic and financial system.”
• Market confidence returned within months.
Aftermath
• The Dow Jones recovered all losses within about two years.
• Regulators introduced circuit breakers — rules to temporarily halt trading
during large drops to prevent panic spirals.
• The crash showed the dangers of automated trading without safeguards.