Black Monday (1987)
In finance, Black Monday refers to Monday, October 19, 1987, when stock markets around the world crashed, shedding a huge value in a very short time. The crash began in Hong Kong and spread west to Europe, hitting the United States after other markets had already declined by a significant margin. The Dow Jones Industrial Average (DJIA) fell exactly 508 points to 1,738.74 (22.61%). In Australia and New Zealand, the 1987 crash is also referred to as "Black Tuesday" because of the time zone difference.
The terms Black Monday and Black Tuesday are also respectively applied to October 19 and October 20, 1929, which occurred after Black Thursday on October 15, which started the Stock Market Crash of 1929.
In late 1985 and early 1986, the United States economy began shifting from a rapidly growing recovery from the early 1980s recession to a slower growing expansion, which resulted in a brief "soft landing" period as the economy slowed and inflation dropped. The stock market advanced significantly, with the Dow peaking in August 1987 at 2,722 points, or 44% over the previous year's closing of 1,895 points. Further financial uncertainty may have resulted from the collapse of OPEC in early 1986, which led to crude oil price decreasing by more than 50% by mid-1986.
On October 14, the DJIA dropped 95.46 points (3.8%) (a then record) to 2,412.70, and fell another 58 points (2.4%) the next day, down over 12% from the August 25 all-time high.
On Thursday, October 15, 1987, Iran hit the American-owned (and Liberian-flagged) supertanker, the Sungari, with a Silkworm missile off Kuwait's main Mina Al Ahmadi oil port. The next morning, Iran hit another ship, the U.S.-flagged MV Sea Isle City, with another Silkworm missile.
On Friday, October 16, when all the markets in London were unexpectedly closed due to the Great Storm of 1987, the DJIA fell 108.35 points (4.6%) to close at 2,246.74 on record volume. Then-Treasury Secretary James Baker stated concerns about the falling prices.
The crash began in Far Eastern markets the morning of October 19. Later that morning, two U.S. warships shelled an Iranian oil platform in the Persian Gulf in response to Iran's Silkworm missile attack on the Sea Isle City.
By the end of October, stock markets in Hong Kong, Australia, Spain, the United Kingdom, the United States and Canada had fallen 45.5%, 41.8%, 31%, 26.45%, 22.68% and 22.5% respectively. New Zealand's market was hit especially hard, falling about 60% from its 1987 peak, and taking several years to recover. A summary of the effects of the crash in New Zealand was summarized in a book written by Olly Newland "Lost Property" giving his experiences during that troubled time. 
The Black Monday decline was—and currently remains—the largest one-day percentage decline in the DJIA. (Saturday, December 12, 1914, is sometimes erroneously cited as the largest one-day percentage decline of the DJIA. In reality, the ostensible decline of 24.39% was created retroactively by a redefinition of the DJIA in 1916.)
Following the stock market crash, a group of 33 eminent economists from various nations met in Washington, D.C. in December 1987, and collectively predicted that "the next few years could be the most troubled since the 1930s". However, the economy was barely affected and growth actually increased throughout 1987 and 1988, with the DJIA regaining its pre-crash closing high of 2,722 points in early 1989.
However the rapid rebound of the stock market largely depended on the S&L business, which was already under scrutiny before its mid-1989 collapse, sending the economy to a "hard landing" phase late that summer. This, along with the abrupt demise of the leveraged buyout craze (which led to the Friday the 13th mini-crash) brought a five-year depression late that year.
A popular explanation for the 1987 crash was selling by program traders, most notably as a reaction to the computerized selling required by portfolio insurance hedges. However, economist Dean Furbush points out that the biggest price drops occurred when trading volume was light. In program trading, computers perform rapid stock executions based on external inputs, such as the price of related securities. Common strategies implemented by program trading involve an attempt to engage in arbitrage and portfolio insurance strategies. As computer technology became more available, the use of program trading grew dramatically within Wall Street firms. After the crash, many blamed program trading strategies for blindly selling stocks as markets fell, exacerbating the decline. Some economists theorized the speculative boom leading up to October was caused by program trading, and that the crash was merely a return to normalcy. Either way, program trading ended up taking the majority of the blame in the public eye for the 1987 stock market crash. U.S. Congressman Edward J. Markey, who had been warning about the possibility of a crash, stated that "Program trading was the principal cause."
New York University's Richard Sylla divides the causes into macroeconomic and internal reasons. Macroeconomic causes included international disputes about foreign exchange and interest rates, and fears about inflation.
The internal reasons included innovations with index futures and portfolio insurance. I've seen accounts that maybe roughly half the trading on that day was a small number of institutions with portfolio insurance. Big guys were dumping their stock. Also, the futures market in Chicago was even lower than the stock market, and people tried to arbitrage that. The proper strategy was to buy futures in Chicago and sell in the New York cash market. It made it hard – the portfolio insurance people were also trying to sell their stock at the same time.
Federal Reserve response
During the financial turmoil, the Federal Reserve encouraged banks to continue to lend to one another on their usual terms. The banks did this at a loss, but it preserved the system as a whole. Some experts argue the Fed's response to Black Monday ushered in a new era of investor confidence in the central bank's ability to calm severe market downturns.
After Black Monday, regulators overhauled trade-clearing protocols to bring uniformity to all prominent market products. They also developed new rules, known as "trading curbs" or colloquially as circuit breakers, allowing exchanges to temporarily halt trading in instances of exceptionally large price declines in some indexes; for instance, the DJIA.
- 2010 Flash Crash
- List of largest daily changes in the Dow Jones Industrial Average
- Stock disasters in Hong Kong
- Wall Street Crash of 1929 (Black Tuesday)
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The precipitous price declines occurred when the normal index-arbitrage relation was most disrupted, not when index arbitrage was prevalent.OCLC 317650570, 50016270, 163149563
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