OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has upgraded the Financial Strength Rating to A (Excellent) from A- (Excellent) and the Long-Term Issuer Credit Rating to “a” from “a-” of Wisconsin Mutual Insurance Company (Wisconsin Mutual) (Madison, Wisconsin). The outlook of these Credit Ratings (ratings) has been revised to stable from positive. The ratings reflect Wisconsin Mutual’s balance sheet strength, which A.M. Best categorizes as very strong, as well as its strong operating performance, li
