peter hotez 11 27 2021
Video Ad Feedback
Expert explains how we'll know if vaccines work against Omicron variant
02:14 - Source: CNN
Coronavirus and the economy 16 videos
peter hotez 11 27 2021
Video Ad Feedback
Expert explains how we'll know if vaccines work against Omicron variant
02:14
Now playing
- Source: CNN
WASHINGTON, DC - DECEMBER 21: People pass a sign that reads "Face Mask Required" in a mall as COVID-19 cases surge in the city on December 21, 2021 in Washington, DC. District of Columbia Mayor Muriel Bowser reinstated the city's indoor mask mandate at 6am on Tuesday and announced a vaccination mandate for government employees after COVID-19 case numbers have surged to a new high. (Photo by Alex Wong/Getty Images)
Video Ad Feedback
This is how fraudsters peddled counterfeit Covid tests and masks
03:43
Now playing
- Source: CNN
mask mandate removal airline
Video Ad Feedback
See airline passengers throw away masks as mandate is revoked
02:54
Now playing
- Source: CNNBusiness
dr sanjay gupta new day iso 04192022
Video Ad Feedback
Dr. Sanjay Gupta reacts to 'abrupt' end of mask mandate for travelers
03:36
Now playing
- Source: CNN
RS E block Katherine
Video Ad Feedback
White House miffed by press corps' Covid coverage?
03:30
Now playing
- Source: CNN
NORTH CHARLESTON, SC - JANUARY 14: (L-R) Neil Cavuto and Maria Bartiromo, moderators of the Fox Business Network Republican presidential debate speak to the audience on stage at the North Charleston Coliseum and Performing Arts Center prior to the debate on January 14, 2016 in North Charleston, South Carolina. The sixth Republican debate is held in two parts, one main debate for the top seven candidates, and another for three other candidates lower in the current polls. (Photo by Scott Olson/Getty Images)
Video Ad Feedback
Fox anchor says the Covid-19 vaccine saved his life
01:41
Now playing
- Source: CNN
covid concept house
Video Ad Feedback
This home was built for the next pandemic
03:32
Now playing
- Source: CNN Business
WASHINGTON, DC - JANUARY 22: National Economic Council Director Brian Deese speaks during a White House news briefing, conducted by White House Press Secretary Jen Psaki, at the James Brady Press Briefing Room of the White House January 22, 2021 in Washington, DC. Psaki and Deese discussed various topics including the economic crisis that was caused by the COVID-19 pandemic. (Photo by Alex Wong/Getty Images)
Video Ad Feedback
National Economic Council director on how to 'normalize' the economy
03:17
Now playing
- Source: CNNBusiness
barri weiss real time with bill maher
Video Ad Feedback
'I'm done with Covid!': Journalist gets praise and backlash for late-night comments
03:07
Now playing
- Source: CNN
screengrab cathay pacific
Video Ad Feedback
Cathay Pacific at breaking point in Hong Kong
03:08
Now playing
- Source: CNN
kelly ernby
Video Ad Feedback
Official who argued against vaccines dies from Covid-19 and sparks big reaction online
03:48
Now playing
- Source: CNN
screengrab hong kong skyline
Video Ad Feedback
Pandemic empties one of the world's busiest airports
03:04
Now playing
- Source: CNN
empty grocery store shelf
Video Ad Feedback
Grocery stores are struggling to stock their shelves. Here's why
02:55
Now playing
- Source: CNN
restaurant
Video Ad Feedback
Restaurants on the brink of closing again as Omicron cases surge
02:48
Now playing
- Source: CNN
colorado governor jared polis
Video Ad Feedback
Colorado Gov. Polis pushes 'get back to normal' strategy
03:20
Now playing
- Source: CNN
Brooklyn Borough President Eric Adams at a gun violence prevention community meeting and press conference on July 14, 2021 at the Lenox Road Baptist Church in Brooklyn, New York City.
Video Ad Feedback
'We have to open up' says NYC mayor on businesses
01:26
Now playing
- Source: CNNBusiness
New York CNN Business  — 

Fears about the Omicron variant of Covid-19 rattled the world’s financial markets Friday and early Monday morning. But shares of the major coronavirus vaccine makers were getting a boost from the latest pandemic jitters.

Moderna (MRNA) soared more than 20% during Black Friday’s abbreviated session of trading on Wall Street and were up another 10% Monday, too.

BioNTech (BNTX) surged 14% Friday and were up 3% Monday while the European drug maker’s vaccine partner, Big Pharma leader Pfizer (PFE), gained 6% Friday but fell a bit Monday.

Shares of Novavax (NVAX), another company that is seeking approval from the United States’ Food and Drug Administration for its Covid vaccine, were up 9% Friday but gave back a big chunk of those gains Monday, falling 8%.

The stocks of two other vaccine manufacturers — Johnson & Johnson (JNJ) and AstraZeneca (AZN) — moved only modestly Friday and Monday.

U.S. President Joe Biden speaks on the economy during an event at the South Court Auditorium at Eisenhower Executive Office Building on November 23, 2021 in Washington, DC.
U.S. President Joe Biden speaks on the economy during an event at the South Court Auditorium at Eisenhower Executive Office Building on November 23, 2021 in Washington, DC.
Alex Wong/Getty Images

Related article The Omicron coronavirus variant is a crucial test for Biden

Investors are hoping that the major vaccine makers will be able to quickly update their Covid vaccines so that it can offer protection for the Omicron variant.

Moderna said Friday that it “will rapidly advance an Omicron-specific booster candidate” while Pfizer has stressed that it could hopefully have an update of its vaccine ready in 100 days if Omicron proves to be resistant to its current vaccine.