US stocks slide in tech-driven sell-off as Trump's positive COVID-19 test spurs volatile trading

• US stocks sank on Friday after President Donald Trump and First Lady Melania Trump said they both tested positive for COVID-19.
• The diagnosis adds more uncertainties to the final month of a presidential race already expected to fuel outsize market volatility.
• While some sectors pared losses and swung higher, falling tech stocks dragged on major indexes and led the Nasdaq composite to underperform its peers.
• Investors also faced off against weakening economic data. US businesses added 661,000 nonfarm payrolls in September, according to the Bureau of Labor Statistics. That's less than economists' expectation of 859,000 payrolls.
• Oil futures continued to slide below the $40 support level. West Texas Intermediate crude dropped as much as 5.4%, to $36.63 per barrel.
• Watch major indexes update live here.

US equities tumbled on Friday after President Donald Trump and First Lady Melania Trump announced they both tested positive for COVID-19.

Trump was tested late Thursday night after close aide Hope Hicks tested positive for the virus earlier in the week. The White House physician did not say whether the president was showing symptoms, or how long he had been infected. The diagnosis is poised to halt Trump's campaign events mere weeks away from the US presidential election.

All three major stock indexes sank in the morning in choppy trading. While some sectors pared most losses through the day, falling tech giants slammed benchmarks and led the Nasdaq composite to underperform its peers. Utility, energy, real estate, and industrial stocks all posted gains.

Here's where US indexes stood at the 4 p.m. ET market close on Friday:

• S&P 500: 3,348.44, down 1%
• Dow Jones industrial average: 27,682.81, down 0.5% (134 points)
• Nasdaq composite: 11,075.02, down 2.2%

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The Cboe Volatility index — or VIX, which is commonly referred to as the stock market's fear gauge — soared as much as 12% before cooling through the morning.

Airline and cruise stocks — some of the most common "reopening plays" — tumbled as Trump's diagnosis slammed hopes for a swift recovery.

Safe-haven assets including the yen and Treasurys initially gained before investors reined in defensive bets.

"Market swings can be unsettling, and there's a lot to think about with today's headlines. However, history has proven to us repeatedly that it's best to wait them out," Lindsey Bell, chief investment strategist at Ally Invest, said. "After the last eight months, you should be a pro at navigating rough waters like this."

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Market participants also faced a worse-than-expected reading of the labor market Friday morning. American businesses added 661,000 nonfarm payrolls in September, according to the Bureau of Labor Statistics. The reading fell below the 859,000 additions expected by economists surveyed by Bloomberg. The unemployment rate fell to 7.9% through the month, beating the consensus estimate of 8.2%.

Though the government's monthly report marked a fifth straight month of job additions, it also revealed a slowing pace of recovery for the beleaguered labor market.

The millions of Americans still unemployed also find themselves without key assistance from the government. House Democrats advanced their own $2.2 trillion measure late Thursday, aiming to revive a $600 per week expansion to unemployment benefits and send another round of direct payments.

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House Speaker Nancy Pelosi indicated she and Treasury Secretary Steven Mnuchin made some progress in reaching a compromise on Friday. Yet Senate Majority Leader Mitch McConnell has indicated that Senate Republicans won't back the bill.

The US dollar initially slumped on the news of Trump's diagnosis before retracing losses.

Spot gold hovered above its key support level of $1,900 per ounce, trading at $1,900.86.

Oil prices continued to slide below $40 per barrel amid the chaotic trading. West Texas Intermediate crude sank as much as 5.4%, to $36.63 per barrel. Brent crude, oil's international benchmark, fell 5.2%, to $38.79 per barrel, at intraday lows.

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