Around 3:05 p.m. GMT, the Dow Jones gained 0.78%, the Nasdaq index, in which technology stocks dominate, yielded 0.40%, and the broader S&P 500 index rose by 0.44%.

"On Wall Street, we say: buy the rumour, sell the news" (buy the rumour, sell the news), recalled Adam Sarhan, founder and managing director of 50 Park Investments, which means that investors are positioning themselves before a announce and then sell once the news is published.

"This time it was the opposite. Sell the rumour, buy the news," he continued, traders starting to buy back securities once the invasion of Ukraine began.

“The question is whether the rebound will continue,” wondered the manager.

The change had started to take place on Thursday, after the indices fell below certain technical levels, in particular the Nasdaq, which briefly went into the "bear market", i.e. a fall of at least 20% compared to its peak.

Wall Street still kept an eye on the invasion of Ukraine, which began Thursday.

Vladimir Putin's spokesman said on Friday that the Russian president was ready to start talks with Ukraine.

On the ground, Russian troops continued their advance and several units entered the capital Kiev.

"The market behaves as if the Russian-Ukrainian situation was not going to become a source of hyper-inflation of raw materials or the starting point of a cyber-conflict penalizing the economy", reacted, in a note , Patrick O’Hare, of Briefing.com.

The New York market was a little tense after the PCE indicator, published on Friday, which showed that inflation had accelerated further in January in the United States, to 6.1% over one year, against 5.8 % the preceding month.

"Before inflation returned, the Fed would have been less eager to raise rates in the event of war or other threats to growth," said Chris Zaccarelli, chief investment officer at Independent. Advisor Alliance.

"But in the current situation, with inflation likely to be further accentuated by the war, the Fed must do the opposite of what it would ordinarily do," he continued.

"It cannot slow down its monetary tightening, even if growth is affected."

The prospect of an acceleration of monetary tightening is unfavorable to equity markets, in particular technology and growth stocks.

The nine largest Nasdaq caps, all tech companies, were in the red on Friday.

Elsewhere on the market, after having melted by more than 40% on Thursday, the "Russian Google" Yandex, listed on Nasdaq, offered a rebound (+10.61% to 22.48 dollars).

The provider of payment services for merchants and between individuals Block, formerly called Square, galloped (+ 17.03% to 111.17 dollars), whipped by its results above expectations.

Difficult digestion (-13.69% to 42.29 dollars) for the specialist in "vegetable meat" Beyond Meat, which ended 2021 with a quarterly loss well above what analysts expected.

The group even saw its retail sales plummet by 19.5% over one year, a sign of a slowdown in the meat alternatives sector.

The e-commerce platform for crafts Etsy was sought (+ 4.60% to 134.32 dollars) after the publication of better than expected results and despite forecasts deemed disappointing for the first quarter of 2022.

The Dell computer maker suffered (-9.10% to 50.76 dollars), him, results below expectations and forecasts, again, less than anticipated by the market.

Difficult morning also for the chain of sporting goods stores Foot Locker (-34.73% to 27.03 dollars), whose results did not live up to analysts' projections and which said it was suffering from a lower volume from the equipment manufacturer Nike, which favors the direct online sales channel.

© 2022 AFP