B
Middlesex Ins Co
Rating Date
June 2026
NAIC
Classification
Risk Adjusted
Capital Ratio #1
Risk Adjusted
Capital Ratio #2
Loss
Ratio
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Total
Assets
Capital
Net
Premiums
Net
Income
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Major Rating Factors: Fair reserve development (3.9 on a scale of 0 to 10) as reserves have generally been sufficient to cover claims. Fair overall results on stability tests (4.9) including excessive premium growth, weak results on operational trends and negative cash flow from operations for 2025. Strengths include potentially strong support from affiliation with Sentry Mutual Holding Co. Strong long-term capitalization index (10.0) based on excellent current risk adjusted capital (severe and moderate loss scenarios), despite some fluctuation in capital levels.
Other Rating Factors: Excellent liquidity (7.0) with ample operational cash flow and liquid investments. Weak profitability index (2.5).
Stability Factors: F - Negative cash flow. T - Significant trends in critical asset, liability, income or expense items.
Principal Lines of Business: Personal/comm auto (42.3%), work comp (12.0%), fire (4.9%), product liab. (4.2%), other (36.6%)
Licensed in: All states
Principal Investments: Investment grade bonds (78.7%), common stock (20.3%), other (1.0%)
Ratios
Premium to Surplus
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Reserve to Surplus
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1-Year Reserve Development
2-Year Reserve Development
Expense Ratio
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Combined Ratio
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Cash From Underwriting
Net Premium Growth
Investments in Affiliates
Corporate Info
Group Affiliation
Sentry Mutual Holding Co
Investment Rating
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Company Address
1800 North Point Drive
Stevens Point, WI 54481
Phone Number
(715) 346-6000
NAIC Number
23434
Website
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Largest Affiliates
A
Stevens Point, WI - P&C
C
STEVENS POINT, WI - L&A
B
Stevens Point, WI - P&C
B
Nashville, TN - P&C
B
Stevens Point, WI - P&C