Stocks fell sharply Monday — with the Dow suffering its worst day since the "Black Monday" market crash in 1987 and its third-worst day ever — even after the Federal Reserve embarked on a massive monetary stimulus campaign to curb slower economic growth amid the coronavirus outbreak. 

The Dow Jones Industrial Average closed 2,997.10 points lower, or 12.9%, at 20,188.52. The 30-stock Dow was briefly down more than 3,000 points in the final minutes of trading. The S&P 500 dropped 12% to 2,386.13 — hitting its lowest level since December 2018 — while the Nasdaq Composite closed 12.3% lower at 6,904.59 in its worst day ever.