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These are the stocks posting the largest moves in midday trading.

“You have an obligation to your fellow man to protect him as well as yourself,” billionaire businessman Ken Langone told CNBC on Wednesday.

Pfizer's vaccine initially protects people 100% of the time against hospitalization, but that falls to low 90% and mid-to-high 80% after 6 months, Bourla said.

Former Olympian Shannon Miller explains why Simone Biles' mental health is so important when it comes to competition.

American Airlines pilot and flight attendant unions say the company is failing to provide adequate lodging and transportation when they are on the road.

U.S. and EU travelers who have been fully vaccinated against the coronavirus will soon be allowed to visit England without having to quarantine.

Sen. Elizabeth Warren reignited her push for a tax on the accumulated wealth of the richest Americans by pointing at the Amazon founder.

"The idea that they're somehow a protection or a hedge, I don't think that's going to be borne out over time," Sen. Elizabeth Warren told CNBC.

The Centers for Disease Control and Prevention doesn't have enough resources to properly track Covid-19 "breakthrough cases," Dr. Scott Gottlieb told CNBC.

Starting Friday, New York City will pay $100 to anyone who goes to a city-run vaccination site for their first Covid vaccine dose, Mayor Bill de Blasio said.

If the WHO endorsed a booster shot, it would likely only be for select groups of recipients, like the elderly or other vulnerable people.

Pfizer on Wednesday raised its 2021 sales forecast for Covid-19 vaccines to $33.5 billion from $26 billion.

All three McDonald's divisions saw same-store sales growth top pre-pandemic levels.

Walmart CEO Doug McMillon has been increasingly interested in expanding his company's profit pools beyond its core retail business.

Covid-19 cases in the U.K. fell for the seventh day in a row on Tuesday to 23,511 from 46,588 a week prior.

Tesla is shuttering a number of its showrooms in high-end shopping malls, according to a report from Electrek.

Athleta is launching a platform for loyalty members offering workout content and spaces to discuss topics ranging from mental health to body positivity.

U.S. stock futures were flat Wednesday after Wall Street snapped its five session winning streak and a run of record high closes.

These are the stocks posting the largest moves before the bell.

Hydrogen has a broad range of applications and can be produced in a number of ways.