The Largest Ever DJIA Intra-Day Sell-Off
On a point basis, the September 29, 2008 sell-off in the U.S. stock market marked the single-worst intra-day pullback in stock market history — a 777.68 decline, followed closely by the 733.08 point pullback two weeks later, on October 15, 2008. Of the 10-steepest declines in stock market history, six came at the end of 2008 during the depths of the financial crisis.
Looking at stock market crashes on a percentage basis, the October 19, 1987, crash easily holds its place as the worst ever. On that day — also known as Black Monday — the Dow lost an astonishing 22.6%, which at the time was a 508-point loss.
The extremely quick pace of the sell-off on September 29, 2008 suggested large selling pushed by program trading and hedge fund liquidation.
Looking at the largest ever DJIA price swings — October 10, 2008 holds the record of 1,018.77 points with the Dow Jones Industrial Average only closing down -128.00 points on the day.