Europe's STOXX 600 heads for biggest quarterly gain in over five years on AI boost
By Johann M Cherian and Tharuniyaa LakshmiEuropean shares opened higher on Tuesday and were on track for their biggest quarterly rise in more than five years, boosted by optimism around artificial intelligence and signs of easing tensions in the Middle East.The pan-European STOXX 600 index TVC:SXXP…