Markets were set for another chaotic session on Monday.
The volatility comes after the world’s major central banks joined in an emergency round of policy easing.
According to Reuters, it's aimed at cushioning the impact of the coronavirus on economies.
The US Federal Reserve cut rates to a target range of 0% to 0.25%.
The Fed is to expand its balance sheet by at least $700 billion in coming weeks.
Five other central banks also cut pricing on their swap lines to make it easier to provide dollars to stressed financial institutions.
President Donald Trump called the move “terrific” and “very good news.”