Stocks ended sharply higher Tuesday as the White House laid out more plans to cushion the economic blow of the coronavirus. More actions by the Federal Reserve to boost access to funds for businesses also aided the comeback.

The Dow closed up more than 1,000 points, or 5.2% The 30-stock average fell more than 200 points after the open and also briefly dipped below 20,000 for the first time since February 2017. The S&P 500 finished up 6% after briefly trading lower, while the Nasdaq gained 6.2%.

Treasury Secretary Steven Mnuchin told reporters the administration want to provide emergency funds to Americans “immediately” as the coronavirus crisis drags on. “Americans need cash now,” he said.

The government is considering directly sending checks to Americans in the next two weeks, Mnuchin said, adding corporations will be able to defer tax payments of up to $10 million. Individuals will be able to defer up to $1 million in payments to the Internal Revenue Service. Mnuchin also said President Donald Trump authorized the deferal of $300 billion in IRS payments.

The White House also wants a stimulus package of $850 billion or more to help the U.S. economy. Sources also told CNBC that U.S. regulators are considering changes to loosen bank liquidity.

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The Federal Reserve announced measures to help companies struggling to get short-term funding amid the outbreak. The market has been hampered by a lack of demand for paper issued, and Wall Street has been looking for central bank intervention along the lines of what happened during the financial crisis.

Tuesday’s choppy trading is the latest example of how volatile markets have been lately. Overnight, Dow futures reached their “limit up” level, trading 5% above their previous close, before rolling over. On Monday, the S&P 500′s decline at the open triggered a so-called circuit breaker, which halts trading for 15 minutes. These limits and circuit breakers are meant to ensure orderly market behavior.

CNBC’s Jim Cramer called the futures a “total joke” after the overnight moves. “Don’t even look at them,” he said in a tweet.

Amazon shares jumped more than 8% after an analyst at Bank of America noted the e-commerce giant is “on a hiring spree.” Netflix climbed more than 6.9% as well while Apple traded 5% higher.

Biotech giant Regeneron, meanwhile, said Tuesday morning that it’s aiming to have doses of a potential drug for COVID-19 ready to start human clinical trials by early summer. The announcement, which represents a marked acceleration in the company’s drug timeline, sparked a 15% rally in the company’s equity.

At least 4,281 cases have been confirmed in the U.S. along with more than 70 deaths, according to data from Johns Hopkins University. President Donald Trump also said the crisis could stretch into August, adding the administration may look at locking down “certain areas.”

The Dow and S&P 500 had on Monday their biggest one-day losses since 1987, falling 12.9% and 12%, respectively. It was also the Dow’s third-worst day ever. The Nasdaq Composite had its biggest one-day plunge ever, tumbling 12.3%.

“Yesterday was a real washout,” said Peter Cardillo, a market economist at Spartan Capital Securities. “I think we’ll have a recession. It’s just a question of how steep it will be.”

The Cboe Volatility Index (VIX) posted its highest-ever close at 82.69. That tops the financial crisis’ peak of 80.74. On Tuesday, the VIX traded down 2.3 points at 80.40.

Wall Street’s drop on Monday came even after the Federal Reserve slashed interest rates to near-zero on Sunday and announced a $750 billion asset-purchasing program. It also came as the number of coronavirus cases jumped in the U.S.

“Although the contemporary crisis is loaded with bad news, this has not been its primary problem. It’s the ‘unknown,’” said Jim Paulsen, chief investment strategist at The Leuthold Group, in a note. “Not even health experts understand what this is or where it is headed, and that is the worst possible outcome for investors.

CNBC’s Thomas Franck and Eustance Huang contributed to this report.