Technology stocks fell as new US government restrictions on the export of Nvidia Corp. chips to China and a disappointing report from Dutch chip-equipment maker ASML Holding NV fanned trade war concerns.

President Donald Trump’s administration has barred Nvidia from selling its H20 chip in China, an escalation of Washington’s tech battle with Beijing. ASML later added to investor anxiety by posting orders that missed expectations and saying that it doesn’t know how to quantify the impact of recent tariff announcements, sending shares as much as 7.6% lower in Amsterdam.