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July 17 Reuters European shares fell for a third consecutive session on Wednesday, dragged down by Dutch semiconductor firm ASML following a weak forecast, while investors were wary of potentially strict U.S. trade rules.

The panEuropean STOXX 600 index fell 0.5 to a oneweek low as of 0830 GMT, with the technology subindex falling 2.6.

ASML shares shed 6.4 after the chipmaking equipment supplier fell short of estimates for thirdquarter sales forecast.

Adding to losses was a report saying the United States has told its allies it is considering using the most severe trade restrictions available if companies continue giving China access to advanced semiconductor technology.

Other semiconductor stocks also lost ground. ASM International and BE Semiconductor both fell more than 3 each.

The stocks weighed on Amsterdam39;s benchmark index, which was down 1.1 to its lowest in two weeks.

Trade restrictions are one of the reasons why traders were concerned about European companies. But these things are typically bilateral, so the U.S. will to a degree also suffer if that was implemented, said Thomas Gehlen, senior market strategist at SG Kleinwort Hambros.

But none of this is set in stone yet … we can39;t say anything about the chance for these kind of policies to be implemented just yet.

European shares have been subdued this week as market participants…