At 14:15 GMT, the Dow Jones index advanced by 0.76%, the Nasdaq by 0.91% and the broader S&P 500 index gained 0.87%.

On Monday, Wall Street had concluded in the green, against a backdrop of lull after ten days of banking turbulence. The Dow Jones had appreciated by 1.20%, the Nasdaq had taken 0.39% and the S&P 500 had risen by 0.89%.

Investors on Tuesday seemed encouraged by Treasury Secretary Janet Yellen's remarks to the American Bankers Association (ABA) before the market opened.

"The situation is stabilizing. And the U.S. banking system remains strong," Biden's economy and finance minister said. Yellen said "actions similar to the quick loans to banks after the collapse of Silicon Valley Bank and Signature Bank "could be warranted if smaller institutions experience run-off withdrawals that pose a risk of contagion."

"U.S. authorities are looking at ways to temporarily extend the FDIC's coverage of deposits beyond the current $250,000 cap," said Art Hogan of B. Riley Wealth Management. White House spokesman Michael Kikukawa said "all tools will be used to support community banks."

The US bank First Republic, still crushed on Wall Street Monday despite the lifelines launched by the authorities and competing institutions, rebounded strongly Tuesday. The share gained 28.65% to $ 15.67, after dropping 47% the day before. Eleven major U.S. banks pledged last Thursday to deposit a total of $30 billion in deposits into First Republic's accounts.

Among other regional establishments, Fifth Third gained 5% around 14:00 GMT, Western Alliance Bancorporation garnered 16.21% and PacWest Bancorp 12.16%.

The big names in the banking sector benefited from this momentum, advancing from 3% to 4%, from JPMorgan to Citigroup to Wells Fargo.

This rebound in bank stocks comes two days after the rescue in extremis of Credit Suisse, bought a mouthful of bread by its competitor and compatriot UBS.

This banking turmoil will also make the Fed's monetary decision difficult. The U.S. central bank, whose meeting begins Tuesday, is expected to make a decision on its rates on Wednesday. There is no doubt that the banking turmoil, partly caused by the Fed's drastic interest rate hike over the past year, will weigh heavily in the discussions of the institution's monetary committee. Nevertheless, markets are still expecting a quarter-percentage-point hike in overnight interest rates, which should take them between 4.75% and 5%.

Inflation remained very high in February in the United States, at 6.0% year-on-year, according to the CPI index that references.

In another register, the title of Tesla jumped 4.42%, to 191.35 dollars, while the group of Elon Musk was rewarded with a better rating on its debt by Moody's.

A further cost cut with the elimination of 9,000 new jobs at Amazon was well received by investors, with the stock climbing 1.31%.

© 2023 AFP