Technology stocks fell on Wednesday after reports that the Trump administration was considering curbs on software-related exports to China, the latest potential escalation of a volatile trade war. The declines came after the Trump administration said it is weighing new restrictions on exports to China of products that contain or were made with U.S. software—including medical devices, jet engines and laptops—in retaliation for Beijing’s recent restrictions on rare-earth shipments. The move would follow a flurry of tariff threats and export controls announced this month, with President Trump warning he could impose duties of up to 100% on Chinese imports by Nov. 1.