The reinsurance industry posted its second-highest half-year return on equity in a decade in the first six months of 2026. A closer look at the numbers shows why that result is more complicated than it appears.
The Gallagher Reinsurance Composite reported a 19.9% ROE for H1 2026. The composite is Gallagher Re's tracked group of large Bermudian and Big Four European reinsurers. That figure comes from Gallagher Re's 2026 Half-Year Reinsurance Market Report. The result was materially assisted by lower than normal natural catastrophe losses, which contributed 3.4 percentage points of ROE benefit.
Strip out that natcat tailwind, prior-year reserve development, and investment gains, and the underlying ROE was 13.8%. That was down from 15.3% in 2025 HY and a 15.7% peak in H1 2024. The gap between the headline and the underlying figure is where the story lives.
The undiscounted combined ratio for the composite hit a record low of 85.8% in H1 2026. That was down from 92.1% in H1 2025. Gallagher Re attributes most of the improvement to lower natcat losses. Those losses reduced the combined ratio by 6.8 percentage points versus the prior year, when the California wildfires dominated first-half results.
Global insured natural catastrophe losses reached at least US$46 billion in the first half of 2026, according to Gallagher Re's Natural Catastrophe and Climate Report. That was 28% below the 10-year average of US$64 billion and 45% below the five-year average of US$82 billion. All five multi-billion-dollar insurance events in the period occurred in the US.
The underlying combined ratio deteriorated 1.1 percentage points to 84.7% once natcat losses and prior-year development are removed. After adjusting for normalized catastrophe losses, the underlying combined ratio rose 0.9 percentage points to 94.2%, as softer rates worked through the book.
P&C reinsurance premiums fell 6.1% in H1 2026, the first year-on-year contraction in the premium series since 2015. Rate reductions in property and specialty lines drove the decline. Several companies also reduced line sizes and actively managed their portfolios. US casualty remained an area where most reinsurers flagged reserve uncertainty and maintained a cautious underwriting stance.
Total reinsurance dedicated capital reached US$688 billion in the first six months of 2026, a new high, up 5% from year-end 2025. Traditional reinsurance capital grew 4% to US$541 billion. Non-life alternative capital grew 9% in the first half to US$147 billion, equivalent to 17% annualized.
Capital growth outpaced revenue growth by a wide margin. Gallagher Re recorded a 5% increase in capital supply against a 0.2% reduction in capital demand. Revenue growth serves as the proxy for demand in that calculation.
Excess capital is described in the report as material and growing. The excess capital position is producing two responses. One is accelerated returns to shareholders. The payout ratio for the composite is expected to reach 75% on average for the full year 2026.
Hannover Re, Munich Re, and Swiss Re each returned slightly more than 100% of their H1 2026 profits to shareholders. Arch Capital repurchased close to US$2 billion of shares in the first half.
The other response, particularly for Bermudian reinsurers with fewer organic diversification options, is pressure to redeploy capital through M&A or into new lines. Gallagher Re identifies capital redeployment as the key strategic challenge for the sub-group.
Gallagher Re raised its full-year 2026 ROE estimate to 16.5% to 17.5%, up from a previous 14% to 15% range. The updated estimate assumes normalized natcat losses in the second half of the year. It also assumes prior-year development and realized investment gains in line with 10-year historical averages.
The implied cost of equity for the composite sits at 11.4% for full-year 2026, based on Gallagher Re's methodology. At the midpoint of the revised range, returns remain materially above that threshold.
Gallagher Re stress-tested that outlook against adverse scenarios. The sector could absorb a US$50 billion to US$75 billion industry insured loss above normal second-half natcat activity. It would still earn its cost of equity for the full year.
Returning the premium-to-capital ratio to 2023 levels would require losses exceeding US$150 billion above normal second-half natcat activity. Gallagher Re notes such an outcome would more likely come from an accumulation of multiple large events than any single catastrophe.
Non-life alternative capital is moving beyond its traditional base in property catastrophe risk. Gallagher Re reports that over the past year, ILS capital has increasingly extended into casualty lines. The move adds to the supply and demand imbalance already driving property cat rate reductions.
The Gallagher Re report covers the cross-cycle period 2017 to 2026. Over that span, the composite is estimated to have generated US$13 billion in cumulative excess profits above the cost of equity, including a soft cycle. Eroding those excess profits would take an incremental six to seven percentage points of combined ratio deterioration for three consecutive years.
