5 Things to Know

5 things to know before the stock market opens Friday

1. Stocks sink after Trump and first lady test positive for coronavirus

People walk by the New York Stock Exchange.
Spencer Platt | Getty Images

Dow futures were pointing to an over 400 point drop at Friday's open following President Donald Trump's early morning tweet that he and first lady Melania Trump tested positive for Covid-19. Dow futures were indicating losses of 500 points immediately after the 12:54 a.m. ET tweet. Bond prices, which move inversely to yields, moved higher. The 10-year Treasury yield dropped to around 0.66%. Wall Street started October with gains Thursday after a rough September, the first monthly loss since March.

On Friday's economic calendar, the Labor Department said a lower-than-expected 661,000 nonfarm jobs were created last month. The nation's unemployment rate fell by half a percentage point to 7.9% in September. This was the last monthly jobs report from the government before Election Day on Nov. 3. Economists surveyed by Dow Jones had been expecting a payrolls gain of 800,000 and an unemployment rate of 8.2%.

2. White House physician expects Trump to 'continue carrying out his duties' while recovering

US President Donald Trump and First Lady Melania Trump return to the White House in Washington, DC, on September 11, 2020.
Andrew Caballero-Reynolds | AFP | Getty Images

The president and first lady are "both well" at the moment, according to a statement from White House physician Dr. Sean Conley, released shortly after the president's tweet. Conley also wrote that he expects Trump to "continue carrying out his duties without disruption while recovering." The statement also said the president and first lady plan to remain "within the White House during their convalescence." The announcement came hours after the president said he would begin a quarantine process after top aide Hope Hicks tested positive for coronavirus.

The New York Times reported Friday morning the president is said to be exhibiting some mild symptoms.

Vice President Mike Pence and the second lady, Karen Pence, tested negative for coronavirus, the White House announced Friday. Treasury Secretary Steven Mnuchin also tested negative on Friday.

Democratic presidential nominee Joe Biden tweeted Friday morning: "Jill and I send our thoughts to President Trump and First Lady Melania Trump for a swift recovery. We will continue to pray for the health and safety of the president and his family." Biden made no mention of whether he was tested in the tweet.

Trump is scheduled to appear at the second presidential debate with Democratic nominee Joe Biden on Oct. 15 — 13 days after he revealed his diagnosis. During their first debate Tuesday night, the president, generally eschewing mask-wearing and downplaying the virus, mocked Biden for wearing masks.

According to CDC guidelines, people should stay home and quarantine for 14 days if they might have been exposed to the virus. The Brookings Institution, in a research note, wrote that Trump's "age and obesity put him into higher risk categories for more serious symptoms" of Covid-19. The president is 74. The first lady is 50.

3. Vice president, then House speaker next in line to run the country

If he were to become unable to carry out his duties as president, power would transfer to Pence under Section 3 of the 25th Amendment, which was adopted in 1967 after the 1963 assassination of President John F. Kennedy. Pence would become acting president, although Trump would remain in office and could regain power. The speaker of the House, in this case Democrat Nancy Pelosi, is next in the U.S. succession plan followed by the Senate president pro tempore, Republican Sen. Chuck Grassley.

4. House passes $2.2 trillion Democratic coronavirus stimulus plan

US Speaker of the House, Nancy Pelosi, Democrat of California, holds her weekly press briefing on Capitol Hill in Washington, DC, on October 1, 2020.
Nicholas Kamm | AFP | Getty Images

The House passed a $2.2 trillion Democratic coronavirus stimulus plan Thursday night even as Democrats and the Trump administration struggle to strike a relief deal. In a 214-207 vote, 18 Democrats voted against the measure as lawmakers in competitive districts grow wary of the ongoing impasse over aid. Senate Majority Leader Mitch McConnell has opposed the legislation as his caucus resists spending trillions more on the federal response to the pandemic. The House vote followed a Thursday conversation between Pelosi and Treasury Secretary Steven Mnuchin in which they did not forge an aid agreement but agreed to continue talks.

5. Amazon says nearly 20,000 workers tested positive for Covid-19

Peter Endig | AFP | Getty Images

Amazon on Thursday released comprehensive data into the spread of the coronavirus among its employees, disclosing for the first time that more than 19,000 workers, or 1.44% of the total, contracted the virus. Between March 1 and Sept. 19, Amazon counted 19,816 presumed or confirmed Covid-19 cases across its roughly 1.37 million Amazon and Whole Foods Market front-line employees across the U.S. Amazon previously declined to share the data, saying it would be misleading and lacked context. In Thursday's blog post, the company urged other companies to release such data. "Wide availability of data would allow us to benchmark our progress and share best practices across businesses and industries," the company wrote.

— The Associated Press and Reuters contributed to this report. Follow all the developments on Wall Street in real-time with CNBC's live markets blog. Get the latest on the pandemic with our coronavirus blog.