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Next · Rendez-Vous de Septembre — 68th edition · Sep 5–9, 2026 · 3d

Risk desk

Construction

Builders risk is stable-to-softening on non-CAT ground-up work; OCIP/CCIP primary is orderly; excess casualty and CAT-exposed projects are not. Tariffs have rewritten project values. This is core Sompo specialty — including Aspen’s U.K. property & construction book.

  • Builders risk −5% to +10% on non-CAT; CAT zones still tight
  • OCIP/CCIP primary flat to +10%; umbrella/excess +5% to +30%
  • Steel/aluminum tariffs lifting replacement values 25–30%
  • Wrap-up structure, delay-in-start, and large-project capacity

Analyst brief

cautious62

3 days to Rendez-Vous de Septembre — 68th edition (Monte Carlo, Monaco). Latest copy: Tariffs rewrite construction valuations — and builders-risk limits — Jencap. Chatter: @ReinsuranceNews Aon confirms $17bn for USI. KKR exits. Sicard to run the middle-market platform. Close targeted Q4. This is the tape going….

Storylines

  • Underinsurance is a claims event waiting. Sompo construction underwriters should be forcing mid-term value endorsements, not waiting for the next bound layer.
  • Sompo can be relevant on non-CAT builders risk and wrap primary. The money — and the differentiation — is still in excess casualty, delay-in-start, and CAT-adjacent project…
  • Competitors are leaning in on complex non-CAT work. Sompo’s construction franchise, now including Aspen’s U.K. property & construction specialty, should be on those same accounts.
  • Aon–USI is the distribution event of the year. Middle-market property, casualty, WC, and construction flow will concentrate.

Risks

  • Underinsurance is a claims event waiting. Sompo construction underwriters should be forcing mid-term value endorsements, not waiting for the next bound layer.
  • Producer movement at Marsh, Aon, WTW, and Howden can orphan incumbents mid-term.
  • Builders-risk underinsurance from 25–30% tariff-driven values.
  • Excess construction casualty still +5% to +30% — capacity is not a given on large wrap-ups.

Watch

  • Rendez-Vous de Septembre — 68th edition — Monte Carlo, Monaco. The 1/1 opening bell. Bilateral reinsurance meetings set January terms. Sompo Re and the Aspen book will be in the room.
  • Monte Carlo (5–9 Sept) — AM Best briefing Sunday 6 Sept.
  • USI close conditions and any Hart-Scott overlay into Q4.
  • Service Insurance regulatory close.

Cautiously constructive. Capital is moving and Sompo’s platform is scaling, but talent litigation and construction casualty keep the tape honest. · seed brief

This beat

On the wire

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