Arcesium, a U.S.-based fintech in which J.P. Morgan has a stake, has appointed Mahesh Narayan as institutional asset manager segment head. Narayan will oversee Arcesium’s delivery of its capabilities that support institutional asset managers, including the firm’s cloud-native data platform, investment lifecycle solutions, and associated financial operations. He has joined from BlackRock, where he was the commercial director for the firm’s Aladdin Data Cloud, supporting large global asset managers and owners in their data strategy, data analytics, and data re-platforming needs.