Global Operational Footprint and Technology Capabilities Enable Scale and Power GrowthLONDON and OAKS, Pa., Sept. 2, 2025 /PRNewswire/ -- SEI® (NASDAQ:SEIC) today announced that the company was selected by Nephila Capital Ltd. (Nephila), a leading investment manager specialising in reinsurance risk, to support its back- and middle-office operations across North America and the UK.Nephila has managed institutional assets in the reinsurance industry for more than 20 years. Owned by Markel Group Inc. (NYSE:MKL ...