Stocks plummeted on Monday as worries about the growing global coronavirus pandemic and an oil price race to the bottom weighed on global financial markets.
The selloff had begun in overnight futures trading, which was halted after futures contracts dropped nearly 5%.
The Dow opened 1,800 points, or 7%, lower.
The S&P 500 dropped 6.9%.
The Nasdaq Composite dropped 7.1%
All this comes after stocks managed to end the last turbulent week in the green. Despite three steep selloffs, the Dow also recorded its best point-gain on record last week.