Stocks are broadly higher on Wall Street in early trading Tuesday, extending a monthlong market rally driven by growing optimism that development of coronavirus vaccines and treatments will loosen the pandemic's stranglehold on the economy.

The S&P 500 index was up 0.9%, with traders favoring stocks that stand to gain the most from a gradual reopening of the economy, such as banks and industrial companies like Boeing. Overseas markets also rose. Treasury yields and oil prices were headed higher.

The Dow Jones Industrial Average rose 342 points, or 1.2%, to 29,934 as of 10:10 a.m. Eastern time. The Nasdaq composite was up 0.3%.

The gains follow news that the transition of power in the U.S. to President-elect Joe Biden will finally begin. On Monday, the head of the federal General Services Administration acknowledged that Biden is the apparent winner of this month’s presidential election. That allows the incoming president to coordinate with federal agencies on plans for taking over on Jan. 20, despite ongoing efforts by President Donald Trump to overturn the election.

Word that Biden has chosen former Federal Reserve Chair Janet Yellen as treasury secretary also added to investors' confidence. Widely admired in the financial world, Yellen would be the first woman to lead the department in a line stretching back to Alexander Hamilton in 1789, taking on a pivotal role to help shape policies at a perilous time.

Stocks have been pushing higher this month, driving the S&P 500 up by more than 10%, as investors have grown more hopeful that the development of coronavirus vaccines and treatments will help pave the way for the economy recover next year. The gains pushed the Dow Jones Industrial Average closer to passing the 30,000-point milestone.

The latest vaccine developments are also tempering lingering concerns over rising virus cases in the U.S., as well as in Asia and other parts of the world, and new government restrictions on businesses aimed at limiting the spread.

On Monday, drugmaker AstraZeneca reported surprisingly good results from ongoing vaccine studies. It said its potential vaccine, which is being developed with Oxford University, was up to 90% effective. Unlike rival candidates, AstraZeneca’s doesn’t have to be stored at ultra-cold temperatures, making it easier to distribute.

Last week, Pfizer and Moderna both reported study results showing their vaccines were almost 95% effective. And, over the weekend, Regeneron Pharmaceuticals received U.S. government approval for emergency use of its COVID-19 treatment. The drug, which Trump received when he was sickened last month, is meant to try to prevent hospitalization and worsening disease from developing in patients with mild-to-moderate symptoms.

Trading is expected to be light on Wall Street this week ahead of the Thanksgiving holiday on Thursday, when U.S. stock markets will be closed. They will reopen on Friday for a half-day session.

In European markets, France’s CAC 40 added 1.2%, while Germany’s DAX rose 1.1%. Britain’s FTSE 100 was up 1.3%. In Asia, Japan’s benchmark Nikkei 225 jumped 2.5%,. Australia’s S&P/ASX 200 gained 1.3% and South Korea’s Kospi added 0.6%. Hong Kong’s Hang Seng edged up 0.4%.