5 things to know before the stock market opens Friday

Traders on the floor of the NYSE, Feb. 17, 2022.

One day after the worst day of the year for the stock market, U.S. stock futures were little changed. The S&P 500 and the Nasdaq both fell on Thursday. The stock sell-off put the S&P 500 close to correction territory, not quite down 10% or more from January's record highs. The Nasdaq was down 15% from its November highs. January's highs were down around 7%. Heading into Friday, all three stock benchmarks were lower.

Increased tensions between Russia and Ukraine caused investors to dump risky assets and put them into the perceived safety of bonds on Thursday and Friday. The 10-year Treasury yield fell to around 1.94%. The Federal Reserve plans to fight inflation and traders are concerned about it. The president of the Fed warned that inflation could become even more serious if interest rates were not raised. By July, he wants a full percentage point in rate increases.

Russian President Vladimir Putin chairs a meeting with members of the Security Council via a video link at the Novo-Ogaryovo state residence outside Moscow, Russia February 18, 2022.

The U.S. issued some of its starkest, most detailed warnings yet about how a Russian invasion of Ukraine might unfold, as Moscow announced massive drills by its nuclear forces. President Joe Biden sounded dire a day earlier, as he warned that Washington saw no signs of a promised Russian withdrawal. The U.S. warned that Russia could use false claims to justify an invasion. The Ukrainian government and Russian state-controlled media were accusing each other of violating the cease-fire.

The chairman and board member of the spaceflight company will be stepping down to focus on other corporate commitments. Palihapitiya sold Virgin Galactic shares and freed up capital. In the premarket, Virgin Galactic was up slightly, but it closed down 10%. The stock, which Palihapitiya helped take public more than two years ago, has plummeted in the past year. In the months after its debut, Virgin Galactic's share price fell to $7 per share, but rebounded to a high of $62.80 in February 2021.

A Roku Inc. remote in an arranged photograph in Hastings-on-Hudson, New York, May 2, 2021.

The morning after the video streaming device maker saw quarterly revenue fall short of forecasts, its shares sank more than 25% in Friday's premarket. The outlook was weaker than expected due to higher component prices and supply chain disruptions. The stock was down by more than 70% in the past year. People were stuck at home and that boosted Roku. Streaming demand has increased as Covid curbs have lessened.

A person wears a face mask outside Shake Shack Innovation Kitchen in Greenwich Village as the city continues Phase 4 of re-opening following restrictions imposed to slow the spread of coronavirus on September 27, 2020 in New York City.

The fast-spreading Covid omicron variant kept diners away and led to temporary restaurant closings as Shake Shack shares dropped 15% in the premarket. Shake Shack reported after the bell that sales for the just-ended quarter were in line with estimates and a per-share loss was less than expected.

The Associated Press contributed to this report. For the CNBC Investing Club to follow Jim Cramer, sign up now. You can follow the broader market action on CNBC Pro.