The 50 most-backed insurance providers in the United States are ranked by their centrality in the sector's funding network — a measure of how embedded they are through grants received, board connections, and shared funders.
The largest are Fiat Lux Risk And Insurance Company, Tufts Health Public Plans Inc, and American Institute For Chartered Property Casualty Underwriters.
Ranked by sector centrality (ImpactRank over the funder graph).