Nest holds its ILS line as the soft cycle arrives

Nest Sammelstiftung, the Swiss pension that invests under an ecological-ethical mandate, has called its insurance-linked securities allocation "convincing" for 2025, one year after the same book returned more than 20%, according to Artemis. The collective foundation did not disclose a specific 2025 return; the chosen adjective is the disclosure. A pension that explicitly slots natural disaster and insurance risk into its portfolio does not use that word lightly.

Nest runs the allocation through a short list of external managers identified by Artemis: a reinsurance-focused fund managed by Swiss Re's ILS investment unit, the Core Nat Cat Fund; a pure catastrophe bond offering from Twelve Securis; and a smaller position in Leadenhall Capital Partners' Life ILS Fund, with Cambridge Associates listed as assisting with the strategy.

A sleeve being held, not chased. At the end of 2025, Nest's ILS investments stood at just under CHF 150 million, roughly $189 million at December 31 exchange rates, against almost CHF 154 million (about $170 million) a year earlier; position-level disclosures from the same date put $97.14 million in the Swiss Re Core Nat Cat Fund, $85 million in the Twelve Securis Cat Bond Fund, and almost $8 million in the Leadenhall Life ILS Fund. As of June 30, 2026, ILS accounted for 3.3% of the portfolio, a share that implies a value near $192 million, with the pension still targeting 3% of assets; Artemis notes that Nest appears not to have increased its allocations, as exchange-rate effects masked some of the investment carry in franc terms.

That steadiness arrives as the forward economics of ILS turn less friendly. Fitch Ratings warns that renewal price cuts, reaching 25% on nat cat lines at mid-year, will erode the record returns Europe's largest reinsurers booked in the first half; cheaper reinsurance translates into thinner premiums for ILS funds to harvest, and a pension that holds its 3% sleeve through that turn is making a statement that the residual risk premium is still worth collecting.

Nest's mandate makes the endorsement particular. The pension positions itself as an ecological-ethical investor, and its inclusion of natural disaster risk fits the Sage Advisory argument that cat bonds and insurance-linked securities belong in impact portfolios because they pay for recovery, not just prevention; a sustainability-minded allocator calling ILS "convincing" is a credibility data point that pure return chasing cannot supply.

The smallest of the three positions is the most forward-looking because it is the one that departs from weather. Nest holds a line in Leadenhall's life ILS fund, a structure built on longevity risk rather than hurricane risk, and life and annuity structures are becoming repeat vehicles for ILS capital; a pension with Nest's mandate holding any life ILS at all is allocator-side evidence that the expansion beyond weather has an audience.

All of which puts the discipline test where it belongs — on the managers. Nest has given Swiss Re, Twelve Securis and Leadenhall a stable, 3%-sized book and a public adjective to live up to, and the 2026 report will answer whether "convincing" survives a market that pays them less for the same risk; if it does not, the shortfall sits with Swiss Re, Twelve Securis and Leadenhall.