02:02 PM EDT, 05/06/2025 (MT Newswires) -- (Corrects to remove the reference to the FTSE 100 in the first and fourth paragraphs, which closed Monday for the May Day bank holiday.

The European stock markets closed mixed in Monday trading as The Stoxx Europe 600 was up 0.19%, Germany's DAX advanced 1.08%, France's CAC 40 declined 0.55%, and the Swiss Market Index was off 0.17%.

In Switzerland, the Swiss Federal Statistical Office reported Monday that the consumer price index was unchanged at 107.5 points in April compared with March. It also said that inflation was 0.0%, compared with a year earlier.

And in corporate news, British oil giant Shell has been discussing with advisers to assess a potential acquisition of rival BP in recent weeks, Bloomberg reported Sunday, citing unnamed sources familiar with the matter. A final decision on the takeover bid would likely depend on the further decline of BP's stock prices, the sources the news outlet. BP did not immediately reply to a request for comment from MT Newswires.

Spain's Banco Santander said Monday it has agreed to sell to Erste Group Bank a roughly 49% stake in Santander Bank Polska for 6.8 billion euros ($7.7 billion) and 50% of the Polish asset management business that Santander Polska does not own for 200 million euros, representing total all-cash consideration of 7 billion euros.

Shares of Banco Santander gained 0.7% in Madrid trading.

Shares of German chemicals company BASF fell 4.3% on the DAX in Monday trading after it said Friday that the volatility caused by U.S. tariffs is causing a "high level of uncertainty."

BioNTech reported a Q1 loss Monday of 1.73 euros ($1.96) per diluted share, wider than a loss of 1.31 euros a year earlier. Revenue for the quarter ended March 31 was 182.8 million euros compared with 187.6 million euros a year earlier. The company maintained its 2025 revenue guidance of 1.70 billion euros to 2.20 billion euros.

Shares of BioNTech fell 4.4% in Frankfurt.