Montana surplus lines market
Surplus lines premium$153.6M2026 YTD market totals
Change on a year earlier—No prior-year report on record
Largest carrierUnderwriters At Lloyds London10.2% of premium
Top 5 carriers
Q2 2026 top insurers (2026-04-01 – 2026-06-30) · 10 carriers listed in the full report
| Rank | Carrier | Premium | Share |
|---|---|---|---|
| 1 | Underwriters At Lloyds London | $9.6M | 10.2% |
| 2 | Cincinnati Specialty Underwriters Insurance Co | $4.3M | 4.6% |
| 3 | Scottsdale Ins Co | $4.2M | 4.4% |
| 4 | Westchester Surplus Lines Ins Co | $4.0M | 4.2% |
| 5 | Chubb Custom Ins Co | $3.2M | 3.4% |
| 5 more carriers, with history, line detail and changes, are in Surplyst. Start with a $1 Trial Pass | |||
Source: SLIP+. Updated October 14, 2026. Surplyst checks the source every day. Figures are as published; shares use the reported market total.
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