New York (AFP)

The American markets returned to green on Monday, reassured about the state of health of Donald Trump, who announced that he would leave the hospital where he has been treated since Friday evening after his contamination with Covid-19 at the end of the day. .

"President Trump has said he will be discharged from hospital this evening after responding well to several treatments for the coronavirus, including one from Regeneron," Briefing.com analysts observe.

Already in progress before the announcement of the head of state, the Dow Jones Industrial Average, the flagship index of Wall Street, climbed 1.68% to 28,148.64 points.

The Nasdaq, with strong technological coloring, rose 2.32% to 11,332.49 points and the extended S&P 500 index, appreciated by 1.80% to 3,408.60 points.

The surge in the interest rate on 10-year US Treasuries (+ 10.65%) suggested a resurgence of risky bets on the part of traders and investors.

The increase was also manifested in other global financial centers.

In Asia, the Nikkei, the flagship index of the Tokyo Stock Exchange, gained 1.23% on Monday, while the Han Seng rose 1.32% in Hong Kong.

In Europe, the Paris (+ 0.97%), London (+ 0.69%) and Frankfurt (+ 1.10%) stock exchanges ended up.

On the oil markets, the prices of barrels of oil listed in New York and London climbed 5.9% and 5.1% respectively.

Hospitalized since Friday after being tested positive for Covid-19, Donald Trump assured that he would leave the Walter Reed military hospital, located near Washington, at 6.30 p.m. (10.30 p.m. GMT).

"Do not be afraid of the Covid", even launched the American president on his Twitter account.

However, many experts wonder about the hasty nature of this hospital discharge.

"It remains to be seen whether the president's illness, his inability to campaign for several days and the apparent recklessness in preventing Covid-19 at the White House will have electoral consequences," was for example questioned at the start of Christopher Low day of FTN Financial.

"The health of world leaders has traditionally been shrouded in mystery and there have been several boondoggles on the part of the president's communications team," commented Sebastien Galy of Nordea Asset Management.

"The market will wait and see if it fully regains its health and if it resumes its campaign," added Mr. Galy.

- Economic barometer -

If Wall Street flinched on Friday at the news of Mr. Trump's hospitalization, market players did not really panic.

"Even if this increases the uncertainty before the elections, the stock market is a barometer of the economy, not of politics", underlined for his part Sam Stovall of the CFRA cabinet.

"History shows that most of the shocks caused by the state of health of a president have generally been well received by the market," he added.

This longtime Wall Street observer points out that "the deaths of Presidents Harding, Roosevelt and Kennedy, along with other medical surprises, resulted in declines of 3% or less that lasted only a few days."

"Only Dwight Eisenhower's heart attack in 1955 and his diagnosis of Crohn's disease in 1956 were met with drops of more than 5% that lasted for several months," adds Stovall.

The financial community was also enthusiastic about the possibility of a bipartisan agreement in Congress on further measures to support the US economy.

"The president's illness, combined with the disappointing employment figures (in September, editor's note), draws attention to the negotiations in Congress and his ability to vote a fourth part of the budget aid package," noted JP Morgan analysts on Sunday.

Republicans on Friday refused to adopt a text to unlock financial aid to prevent US airlines from carrying out the massive layoffs they have announced.

But discussions between Nancy Pelosi, the leader of the Democrats in the House of Representatives, and Steven Mnuchin, the secretary of the Treasury, are continuing.

Despite the generally optimistic tone at the start of the week, caution remained in order among many observers.

"Investors must be on the alert," JJ Kinahan of TD Ameritrade recommended early Monday.

"The market remains vulnerable to sudden movements linked to the election and the virus, especially in the absence of crucial data or results of major companies this week," he warned.

© 2020 AFP