ILS Advisers Fund Index

The insurance-linked securities (ILS) fund sector began 2026 with an above-average January, as the average return across ILS funds tracked by the ILS Advisers Fund Index stood at 0.71% for the month.

The insurance-linked securities (ILS) fund sector finished 2025 on strong footing with December seeing the third-highest returns for that month on record, as both catastrophe bond funds and strategies allocating to private ILS finished the full-year with averaged double-digit returns, the ILS Advisers Fund Index shows.

The insurance-linked securities (ILS) fund sector gained 0.81% on average for November 2025, lifting the group of cat bond and ILS funds tracked by the ILS Advisers Fund Index to an average 11-month return of 10.40%.

The insurance-linked securities (ILS) fund sector has delivered its strongest October returns on-record in 2025, as the group of ILS funds tracked by the ILS Advisers Fund Index reported an average performance for the month of 1.44%.

The insurance-linked securities (ILS) fund sector has delivered its highest single month of investment returns on record in September 2025 according to the ILS Advisers Fund Index, as strong premium accrual, coupon earnings and a benign loss environment combined to drive exceptional performance.

The insurance-linked securities (ILS) fund sector delivered another solid month of investment returns in August 2025 according to the ILS Advisers Fund Index, with the average ILS fund return across the index constituents reaching 1.58% for the month, the strongest month of this year so far and second best August ever.

The insurance-linked securities (ILS) market experienced a strong month of returns in July 2025 according to the ILS Advisers Fund Index, with private ILS funds leading the way and on average now positive for the year to July 31st as a group, having erased the negative effects of California wildfires at the start of the […]

Catastrophe bond funds have outpaced private ILS funds included in the ILS Advisers Fund Index for the first-half of 2025 and across the group of 37 constituent insurance-linked securities (ILS) funds tracked by the Index, the average return for the six months was 2.05%.

Across the insurance-linked securities (ILS) fund sector the month of May 2025 was a positive one, with the average across all private ILS and catastrophe bond funds tracked by the ILS Advisers Fund Index reaching a +0.79% return for the period.

The ILS Advisers Fund Index, which tracks the performance of the insurance-linked securities (ILS) fund sector, has turned positive for the year after April on the back of another strong month of private ILS fund returns.