During this crash, 1/2 trillion dollars of wealth were erased.
Causes of the Crash:
- No Liquidity. During the crash, the markets were not able to handle the imbalance of sell orders;
- Overvalued Stocks;
- Program Trading and the Use of Derivative Securities Software. Large institutional investment companies used computers to execute large stock trades automatically when certain market conditions prevailed. Some analysts claim that the program trading of index futures and derivatives securities was also to blame.
The markets hit a new high on August 25, 1987 when the Dow hit a record 2722.44 points. Then, the Dow started to head down. On October 19, 1987, the stock market crashed. The Dow dropped 508 points or 22.6% in a single trading day. This was a drop of 36.7% from its high on August 25, 1987.
Following the Crash:
- Uniform Margin Requirements. New margin requirements were introduced to reduce the volatility for stocks, index futures, and stock options;
- New Computer Systems. Stock exchanges changed to new computer systems that increase data management effectiveness, accuracy, efficiency, and productivity;
- Circuit Breakers. The New York Stock Exchange and the Chicago Mercantile Exchange instituted a circuit breaker mechanism, which halts trading on both exchanges for one hour should the Dow fall more than 250 points in a day, and for two hours, should it fall more than 400 points.