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🌪️ '''Catastrophe bond (Cat bond)''' is a risk-linked security issued by an [[Definition:Insurance carrier | insurer]], [[Definition:Reinsurance | reinsurer]], or government entity that transfers a specified [[Definition:Catastrophe risk | catastrophe risk]] to capital market investors. Unlike traditional reinsurance contracts negotiated between (re)insurers, Cat bonds are structured financial instruments — typically issued through a [[Definition:Special purpose vehicle (SPV) | special purpose vehicle]] — that pay investors an attractive coupon in exchange for bearing the risk that a defined catastrophic event, such as a hurricane, earthquake, or pandemic, will trigger a partial or total loss of principal. The market emerged in the mid-1990s following Hurricane Andrew and the Northridge earthquake, which exposed the limits of conventional reinsurance capacity.

🏗️ A typical Cat bond transaction begins when a sponsoring (re)insurer establishes an SPV in an offshore or tax-neutral jurisdiction such as Bermuda, the Cayman Islands, or Ireland. The SPV issues notes to institutional investors — pension funds, hedge funds, and dedicated [[Definition:Insurance-linked securities (ILS) | ILS]] fund managers — and invests the proceeds in highly rated collateral held in a trust account. The sponsor pays a premium to the SPV, which, combined with the collateral yield, funds the coupon paid to investors. If a qualifying event occurs and meets the bond's trigger conditions — which may be [[Definition:Indemnity trigger | indemnity-based]], [[Definition:Industry loss index trigger | industry-loss indexed]], [[Definition:Parametric trigger | parametric]], or modeled-loss — the SPV releases collateral to the sponsor to cover claims. The trigger structure is critical: parametric triggers (tied to objective physical measurements like wind speed or earthquake magnitude) settle faster and reduce [[Definition:Moral hazard | moral hazard]], while indemnity triggers more closely mirror the sponsor's actual losses but introduce [[Definition:Basis risk | basis risk]] of a different kind and longer development periods.

📈 Cat bonds occupy a strategic position at the intersection of insurance and capital markets, providing sponsors with multi-year, fully collateralized protection that diversifies their [[Definition:Reinsurance program | reinsurance programs]] beyond traditional capacity. For investors, these instruments offer returns largely uncorrelated with equity and bond markets, which explains the asset class's steady growth to tens of billions of dollars in outstanding issuance. Regulatory frameworks across jurisdictions increasingly accommodate Cat bonds — [[Definition:Solvency II | Solvency II]] in Europe, for instance, recognizes qualifying ILS structures for capital relief, while U.S. state regulators have developed special purpose reinsurer statutes. The market continues to evolve, with recent innovations including Cat bonds covering [[Definition:Cyber risk | cyber risk]], [[Definition:Wildfire risk | wildfire]] perils, and sovereign disaster financing for developing nations through entities like the World Bank.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Insurance-linked securities (ILS)]]
* [[Definition:Special purpose vehicle (SPV)]]
* [[Definition:Parametric trigger]]
* [[Definition:Reinsurance]]
* [[Definition:Basis risk]]
* [[Definition:Catastrophe risk]]
{{Div col end}}

Definition:Catastrophe bond (Cat bond) - Revision history

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