This directory profiles 38 insurance company investors managing over $12 trillion in general account and third-party assets. PGIM, Nuveen, Berkshire Hathaway, Legal & General, and Allianz lead the group. U.S. life insurers hold over $5 trillion in general account assets. Property-casualty carriers add another $2 trillion. Together, these general accounts dwarf most sovereign wealth funds -- yet for decades, regulators kept them parked in investment-grade bonds. That constraint has eroded fast.
Since 2015, the story in insurance capital allocation has been the pivot to alternatives. Compressed yields on traditional fixed income forced insurers into private credit, private equity, real estate, and infrastructure. The average large life insurer now puts 15 to 25 percent of its general account into alternatives, up from single digits a decade ago. And the shift accelerated when alternative managers started buying insurers outright. Apollo took Athene, KKR took Global Atlantic, Brookfield took American Equity -- each creating a vertically integrated machine that manufactures liabilities on one end and deploys the float into private markets on the other.
Life companies and P&C carriers play different games. Life insurers carry 10- to 30-year obligations from annuities and policies, which lets them hold illiquid assets: private credit, infrastructure debt, long-dated real estate. P&C carriers face shorter claim cycles and need liquid portfolios -- investment-grade bonds, shorter credit, public equities. Berkshire Hathaway is the obvious exception: its scale, float, and permanent capital structure let Buffett invest P&C premiums with an endowment's patience.
Most of the largest insurers have spun up or acquired dedicated investment management arms that now run third-party money alongside the parent's general account. PGIM manages $1.5 trillion for Prudential and outside clients. Nuveen runs $1.4 trillion as TIAA's investment engine. Barings, AllianceBernstein, Columbia Threadneedle, and MetLife IM all started as captive insurance subsidiaries and grew into major asset managers in their own right. For anyone raising an alternatives fund, insurers are among the fastest-growing LP pools -- especially in private credit, CLOs, asset-based finance, and infrastructure.