Zoom Video, Carnival, Peloton, Moderna: what to watch when the stock market opens today

Global markets take a hit on Black Friday amid concerns over a new variant of Covid-19, but some familiar names are getting a boost. Here is what we were watching: – Covid-19 vaccine producers were jumping ahead of commercialization as pandemic fears gripped markets. Pfizer added 6.5% pre-market, Moderna climbed 10% and Novavax gained 6%. – Investors appeared to be positioning themselves for more nights, with Netflix shares up 2.2% ahead of the bell and DoorDash adding 4%. – Peloton was also benefiting from the prospect of more time spent at home, with shares up 6.7% pre-market. – Airlines and…