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🔒 '''Side pocket''' is a segregation mechanism used within [[Definition:Insurance-linked securities (ILS) | insurance-linked securities]] funds and certain [[Definition:Reinsurance | reinsurance]] vehicles to isolate assets that have become illiquid or are subject to uncertain valuations — typically because a covered loss event has occurred or is developing and the ultimate payout to the [[Definition:Cedent | cedent]] remains unresolved. When a [[Definition:Catastrophe bond | catastrophe bond]] or [[Definition:Collateralized reinsurance | collateralized reinsurance]] contract within a fund's portfolio is potentially impaired by an insured event, the fund manager moves the affected position into a side pocket, separating it from the liquid, freely tradable portion of the portfolio.

⚙️ The mechanics serve a dual purpose: protecting existing investors from dilution and preventing new or redeeming investors from gaining an unfair advantage. Without side-pocketing, an investor who redeems immediately after a major hurricane, for example, might withdraw capital at a net asset value that does not yet reflect the full extent of pending [[Definition:Claims | claims]] — effectively shifting losses onto remaining investors. By quarantining the impaired position, the fund ensures that only those investors who held units at the time of the loss event share in the eventual outcome, whether that results in a partial recovery or a total write-down. Redemptions and subscriptions proceed normally against the liquid portion of the fund, while the side-pocketed assets are held until the [[Definition:Loss development | loss development]] process concludes and final valuations can be established. Governance around side pockets — including the triggers for activation, valuation methodology, and reporting obligations — is typically set out in the fund's offering memorandum and overseen by the fund's board or independent directors.

⚠️ Side pockets became a focal point of industry debate after the severe [[Definition:Catastrophe loss | catastrophe losses]] of 2017–2018, when a significant volume of ILS fund assets was side-pocketed for extended periods due to prolonged [[Definition:Loss adjustment | loss adjustment]] and [[Definition:Loss development | development]] timelines, particularly on [[Definition:Collateralized reinsurance | collateralized reinsurance]] contracts with [[Definition:Indemnity trigger | indemnity triggers]]. Investors found capital locked up far longer than anticipated, raising questions about liquidity expectations, manager transparency, and the appropriateness of side-pocket governance structures across the ILS fund industry. These experiences prompted many [[Definition:ILS fund | ILS fund]] managers to refine their side-pocket policies, improve investor communication, and in some cases shift portfolio construction toward structures with more predictable settlement timelines. For [[Definition:Capital markets | capital markets]] investors considering allocations to insurance risk, understanding how a fund employs side pockets is now a core element of due diligence — as important as understanding the underlying perils in the portfolio.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Insurance-linked securities (ILS)]]
* [[Definition:Collateralized reinsurance]]
* [[Definition:Loss development]]
* [[Definition:Catastrophe bond]]
* [[Definition:ILS fund]]
* [[Definition:Net asset value (NAV)]]
{{Div col end}}

Definition:Side pocket - Revision history

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