CNBC Business

Check out the companies making headlines in after-hours trading.

"Mad Money" host Jim Cramer rings the lightning round bell, which means he's giving his answers to callers' stock questions at rapid speed.

A third shot shows virus-fighting abilities comparable with the protection provided by two doses against the original strain of the virus.

Dr. Scott Gottlieb told CNBC the omicron variant "extends the timeline" on when Covid will go from pandemic to endemic.

Money managers appear to be crawling out of their foxholes, setting the stage for a possible Santa Claus rally on Wall Street, CNBC's Jim Cramer said.

Kohl's CEO Michelle Gass said the retailer is doing due diligence after receiving a letter from activist group Engine Capital.

GameStop shares fell after the video game retailer reported that its losses widened in the fiscal third quarter.

Cramer says wait to buy Sweetgreen despite stock's fall, 'you can afford to take your time'

The "Mad Money" host said he's taking profits in some winning positions, so he can take advantage of any near-term weakness.

South Africa's test positivity rate also hit 22.4% at the beginning of the last week, a sharp increase from 1.2% reported during the first week of November.

Rent the Runway booked a wider fiscal third-quarter loss compared with 2020, as its sales shot up 66% year over year.

Satellite imagery and data specialist Planet began trading Wednesday on the New York Stock Exchange, becoming the latest space company to go public.

Most disappointing to investors is Stitch Fix's bleak outlook for the future amid slowing user growth.

Pfizer CEO Albert Bourla said he's confident clinical trials will show the oral antiviral pill, Paxlovid, reduces Covid hospitalization and death by 89%.

Day by day, more information has emerged regarding the spread of the variant, as well as anecdotal evidence and preliminary data about its risk profile.

Mark Cavendish stunned pro cycling with a comeback in the 2021 Tour de France that saw him tie Eddy Merckx for the most stage wins.

Southwest raised its revenue forecast for the last three months of 2021.

"When we see real-world data, will determine if the omicron is well covered by the third dose and for how long," Pfizer CEO Albert Bourla told CNBC.

The study compared the leading casts in television and movies over the course of two 18-month periods, according to Variety.

Starbucks workers at three cafes in Buffalo, New York, voted this week to decide if they will form a union.