European shares muted as investors weigh U.S.-Iran talks

European shares were largely flat with the pan-European STOXX 600 index edging up 0.05% to 635.92 points as investors weighed developments around U.S.-Iran talks. Tech stocks led sectoral gains, rising 1.2%, with chipmaker Infineon and semiconductor equipment maker Aixtron gaining 4.5% and 2.3% respectively, tracking advances in Asian equities.