How many Dow Jones points did the 2010 Flash Crash erase at its sharpest moment?

The 2010 Flash Crash erased about 1,000 Dow Jones points at its sharpest moment.

On May 6, 2010, U.S. stock markets experienced an extremely rapid decline and partial rebound. The Dow Jones Industrial Average fell about 1,000 points, or roughly 9%, within minutes before recovering much of the loss. The episode exposed how quickly electronic markets could transmit selling pressure.

A U.S. Securities and Exchange Commission and Commodity Futures Trading Commission report concluded that a large automated sell order in E-mini S&P 500 futures interacted with high-frequency trading activity and deteriorating liquidity. The precise market dynamics were complex, but the event was not a normal, gradual bear-market decline.

The crash led to new safeguards, including single-stock circuit breakers and market-wide mechanisms. The term “flash crash” can refer to other episodes, but the 2010 event is the best-known U.S. example. The Dow's point loss and percentage loss are separate measurements.