U.S. stock futures reversed higher and gained for a third day Wednesday after Pfizer and BioNTech said three doses of their vaccine are effective at neutralizing the omicron variant.
Futures for the Dow Jones Industrials jumped 72 points or 0.2%, to 35,783.
Futures for the S&P 500 acquired 10 points, or 0.2%, to 4,695.
Futures for the NASDAQ gained 44 points, or 0.3%, to 16,362.
On Tuesday, the S&P 500 and NASDAQ posted their best days since March. Technology stocks have led the way this week, with the NASDAQ up 4% since Monday. The Dow and S&P 500 notched their largest two-day gain since November 2020.
While the majority of S&P 500 companies have reported third-quarter earnings, Campbell Soup, GameStop and Rent the Runway report on Wednesday.
Pfizer and BioNTech cited their own preliminary lab tests, saying the booster dose provides similar protection as two doses did against the older strain. The companies said two doses may still protect against severe disease.
In individual stock news, Apple shares climbed 0.8% despite a report that the iPhone maker is expected to fall 15 million units short of its 230 million-unit goal this year due to supply chain problems.
On Wednesday, the U.S. Bureau of Labor Statistics will release October's Job Openings and Labor Turnover Survey. Economists polled by Dow Jones are expecting there were 10.6 million open positions in October, up from 10.4 million in September.
Overseas, markets in Japan climbed 1.4% Wednesday, while the Hang Seng in Hong Kong eked up 0.1%.
Oil prices gained 11 cents to $72.16 U.S. a barrel.
Gold prices fell 80 cents to $1,783.90 U.S. an ounce.