(BFM Stock Exchange)-The Parisian index closes this Thursday, September 11 above 7,800 points, after the BCE status quo on its rates and the publication of consumer prices in the United States not questioning the prospect of a monetary relaxation. Stellantis won more than 9%.

The Paris Stock Exchange is making a perfect week for the time being. The CAC 40 fence net increased from 0.8% to 7,823.52 points, and records this fourth session in positive territory on Thursday, September 11.

The Paris market continued to rise, while investors have dissected new data relating to prices in the United States.

In August, the consumer price index of August was up +0.4% over a month, which is a little above consensus expectations ( +0.3%) and after +0.2% in July over a year, inflation also accelerated to +2.9%, against +2.7% a month earlier.

“This report on prices shows once again that customs duties have for the moment had only a very limited effect on American inflation. The great caution displayed by Jerome Powell this year on the subject now seems overwhelmed by the degradation of the labor market, which is very clear. The Fed will therefore be able to resume its calmly rate cycle”, notes Bastien Drut, responsible for strategy and economic studies.

As expected, the European Central Bank has decided to leave its rates unchanged, for the second consecutive time.

“The key point of this day’s meeting, Christine Lagarde estimated that the disinflation process was now completed in the euro zone with online inflation with the medium -term objective of the ECB (2%). Clearly, in view of the risk balance and economic projections, the guiding rates are at a suitable level and the minimum deviations of inflation compared to the target do not justify a change in rate.” Perricard, president of Uzès Gestion.

“The result of summer trade negotiations and inflation projections do not start to act. And the fact that the Council estimates that the risks on economic prospects are now more balanced moves a little more the probability of a new rate drop later in the year,” said Juliette Cohen, strategist at CPRAM.

Stellantis puts the turbo

On the front of values, Stellantis increased by 9.2%, supported by the encouraging remarks of its director general Antonio Filosa during “Kepler Cheuvreux Autumn Conference 2025”.

Kering won 2.4% while the group reported an evolution of the shareholder pact binding it with Mayhoola, for the takeover of Valentino.

On the SBF 120, Technip Energies resumed 2.9%, the market praised the acquisition of the Advanced Materials & Catalyst activity from Ecovyst, marking the group’s first major acquisition since 2021.

On the side of the small and medium capitalizations, Save Environnement fell 12% in the wake of its warning on results launched Wednesday evening after the fence.

In other markets, the euro takes 0.3% against the greenback at 1.1733 dollars. Oil consolidates. The November contract on northern sea drops from 1.6% to $ 67.02 per barrel while that of October on the WTI listed in New York gives $ 62.51 a barrel.