Reinsurance sidecar market grew more than $5bn in 2025: Aon Securities (Artemis.bm)
Aon Securities reports that outstanding collateralized reinsurance sidecar capacity grew by more than $5 billion in 2025, taking the market to roughly double its mid‑2024 size, with growth now driven primarily by casualty and multiline (non‑cat) sidecars that generate float and appeal to private credit and private equity investors seeking diversified insurance risk and investment income. Sidecar terms have been tightened since the loss-heavy 2017–2020 period, improving alignment between sponsors and investors and enabling expansion into non-cat and longer‑tailed lines while maintaining investor protection. Insurers, reinsurers and MGAs are using sidecars and related quota-share structures (including packaged “ReShares”) to diversify reinsurance panels, access retrocession for specialty and casualty portfolios, and place whole-account business, particularly through Lloyd’s and Bermuda platforms. As a result, sidecar capital has become an important tool for supporting cedant growth, managing risk exposures, diversifying reinsurance sources and enhancing commissions, with current investor demand showing no signs of slowing. [Source: Artemis.bm]