The brief 2010 U.S. market crash in which the Dow fell nearly 1,000 points was the Flash Crash.
On May 6, 2010, the Dow Jones Industrial Average dropped about 1,000 points, or roughly 9%, within minutes before recovering much of the loss. Individual securities briefly traded at extremely low or high prices, creating an unusually disorderly market.
Investigations examined automated trading, high-frequency trading, liquidity withdrawal, and a large sell order in E-mini S&P 500 futures. The U.S. Securities and Exchange Commission and Commodity Futures Trading Commission concluded that the interaction of these factors helped produce the sudden collapse. The event led to changes in market safeguards, including coordinated circuit breakers for individual securities. It is distinct from the 1987 Black Monday crash, which was a much broader and longer-lasting decline.