European chip stocks fall after Trump says he will unveil new tariffs

European stock markets closed in the green with the Stoxx Europe 600 index up by 0.1%.

Regionally, the U.K.'s FTSE 100 rose 0.1%, Germany's DAX higher by 0.4%. Meanwhile, France's CAC 40 bucking the trend losing 0.1%.

European semiconductor stocks reversed gains from earlier in the trading session to end in the red after President Donald Trump told CNBC he will unveil new tariffs on semiconductors and chips as soon as next week.

BE Semiconductor fell 2.3%, the most in the sector. It makes 18% of its total revenue in the U.S., with sales more than doubling in the country over the past year, according to FactSet.

Chip equipment makers VAT Group and STMicro also declined by 0.9%

Switzerland wanted 1% tariff on goods imported into the country, according to U.S. President Donald Trump's account of the negotiations ahead of his threat to hit the Alpine country with 39% tariffs.

Trump told CNBC's "Squawk Box" that Swiss President Karin Keller-Sutter "didn't want to listen" to his concerns about the U.S. trade deficit with Switzerland.

The U.S. trade deficit with Switzerland stood at $38.3 billion in 2024, according to the U.S. Trade Representative's office. Meanwhile, the U.S. exported $35 billion surplus in services.

"I said, we have a $41 billion deficit, and you want to pay 1% tariff?" exclaimed Trump. "She wanted 1%. I said, you're not going to pay 1%. We lose because I view deficit [as] lost."

The Swiss President's office declined to comment.

The threated 39% tariff on Switzerland came as a shock to the nation. Indications in the Swiss press had been that the country was close to negotiating an outline deal similar to those struck by the European Union, the U.K. and Japan, which set baseline tariffs between 10% and 15%. Instead, it has received one of the highest rates of any country.

Switzerland's President Keller-Sutter and Vice President Guy Parmelin on Tuesday announced they were flying to the U.S. to "facilitate meetings with the U.S. authorities at short notice and hold talks with a view to improving the tariff situation for Switzerland."