Alternative capital inflows hit $136B with 18% rise, reshaping reinsurance
Broker Aon Plc data shows alternative allocations to catastrophe bonds and insurance-linked securities grew 18% to a record $136 billion last year. Reinsurers halved their insured disaster loss exposure and shifted risk via cat bonds and $18 billion of sidecar vehicles.
1. Record Alternative Capital Growth
Allocations to catastrophe bonds and other insurance-linked securities jumped 18% to $136 billion last year, marking the highest annual inflow on record and reflecting growing appetite from hedge funds and institutional investors for property catastrophe risk.
2. Pressure on Traditional Reinsurers
Traditional reinsurers covered just over 10% of total insured catastrophe losses in 2024—down from a historical average of 20%—as they reduced their exposure by more than half and increasingly looked to transfer risk to capital markets.
3. Aon's Brokering Role
Aon Plc has facilitated the surge in alternative capital by structuring and brokering catastrophe bond issuances and sidecar vehicles, enabling insurers and reinsurers to offload disaster risk to investors in exchange for premium income.
4. Outlook for Capital Markets
With urbanization, inflation and climate change driving more frequent and severe disasters, catastrophe bond issuance and sidecar funding—which has nearly tripled to $18 billion—are expected to expand further as capital markets supply trillions in coverage.