** European semiconductor stocks rise sharply as the sector tracks a rebound in Asian tech, with investors buying initial weakness in AI plays
** The move follows a late bounce in U.S. chip stocks that lifted the Philadelphia Semiconductor index .SOX off lows; Nasdaq futures up 0.6% after Tuesday's negative close
** Sector heavyweight ASML ASML.AS rises 2.5%, while STMicro STMPA.PA and Infineon IFXGn.DE both gain around 5%
** Elsewhere, ASMI ASMI.AS, Siltronic WAFGn.DE, Aixtron AIXGn.DE and ams OSRAM AMS.S are up between 1.6% and 7.9%
** Gains come amid lingering valuation concerns after recent rallies, though hopes of no further escalation in U.S.-China chip curbs offer support ahead of high-level talks this week
** STOXX Technology index .SX8P rises 1.6%, outperforming the wider STOXX 600 .STOXX, up 0.8%
(Reporting by Ozan Ergenay and Danilo Masoni)
((ozan.ergenay@thomsonreuters.com))