The Dow Jones gained 0.71%, the Nasdaq index gained 1.27% and the broader S&P 500 index, 1.06%.

This is the fourth straight session up for the S&P 500, now at its highest level in three weeks.

For analysts at Briefing.com, Wall Street remained on the trajectory initiated at the end of last week and initiated by a technical rebound.

These new gains are also due, for them, to the decline in the dollar, as well as to the auspicious session of Apple, the first valuation of the New York market (2.626 billion dollars).

After having benefited only marginally from the presentation last week of a series of new products, in particular the iPhone 14, the Apple brand took off on Monday (+3.85% to 163, 43 dollars), leading the technological giants, far ahead of Amazon and Microsoft.

In addition to these elements, "several traders have decided to hedge their positions" after betting on the decline since the end of August, according to Karl Haeling of the LBBW bank.

They thus bought on the market to limit their risks before the publication on Tuesday of the consumer price index, which will provide information on the trajectory of inflation in the United States.

In July, this index was unchanged compared to the previous month, after having climbed by 1.0% and 1.3% respectively in May and June, and up by 8.5% over one year against 9.1% in June.

Economists expect, this time, a slight decline of 0.1% compared to July and an increase of 8.0% over one year.

Twitter down

For Karl Haeling, Wall Street is also spurred on by several indicators that show investors are extremely pessimistic, which often presages a lasting upward movement.

The weekly survey by the American Association of Individual Investors (AAII) thus revealed that the proportion of optimists among investors was at its lowest for more than four months.

The yield on 10-year US government bonds tightened slightly, at 3.35%, against 3.32% on Friday.

The week got off to a flying start for the Bristol Myers Squibb laboratory (+3.14% to 72.36 dollars) after the authorization by the drug regulatory agency, the Food and Drug Administration (FDA), to marketing of its drug Sotyktu against psoriasis.

Twitter fell 1.85% to $41.41 on the eve of an important week that is due to see the company's former IT security chief appear before the US Senate Judiciary Committee on Tuesday. .

The same day, an extraordinary general meeting is scheduled to validate the takeover of the platform by Elon Musk, an operation which this entrepreneur has officially renounced and which will be the subject of a trial in October.

Disney advanced (+ 1.05% to 116.39 dollars) while the founder of the investment company Third Point, Daniel Loeb, explained on Sunday that he gave up claiming the group to split with its information subsidiary and dedicated sports TV station ESPN.

The investor had indicated, in mid-August, to have bought for a billion dollars of Disney titles.

The listed rail giants rose after it announced agreements with three more freight worker unions on a new collective bargaining agreement.

The deadline for the end of negotiations is Friday.

Two unions are still unable to reach an agreement with the companies, which raises the risk of a strike which would seriously disrupt the logistics organization in the United States and the American economy.

Pending the expiry, Union Pacific (+0.98%), Canadian National (+1.59%) and CSX (+0.64%) picked up speed.

© 2022 AFP