Stocks of major Asian chipmakers surged after a U.S.-Iran ceasefire eased supply chain fears. The war between the U.S. and Iran had triggered serious concerns about helium supply. Helium is a critical gas used in chip production and photolithography. Xeon server chips shown to CNBC inside Intel's advanced packaging facility in Chandler, Arizona, on November 17, 2025. Asian technology and semiconductor stocks surged on Wednesday after the U.S. and Iran agreed to a conditional two-week ceasefire that includes a temporary reopening of the Strait of Hormuz.  The news sent major indexes in Asian markets soaring, with chipmakers — which are…