OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has upgraded the Financial Strength Rating (FSR) to A- (Excellent) from B++ (Good) and the Long-term Issuer Credit Rating (Long-Term ICR) to “a-” from “bbb+” of The Marysville Mutual Insurance Company (Marysville Mutual) (Marysville, KS). The outlook of these Credit Ratings (ratings) has been revised to stable from positive. The rating upgrades are a reflection of the company’s continued strengthening of its risk-adjusted capitalization and favorable op
