MEXICO CITY–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating of A- (Excellent), the Long-Term Issuer Credit Rating of “a-” and the Mexico National Scale Rating of “aaa.MX” of Stewart Title Guaranty de México, S.A. de C.V. (STGM) (Mexico). The outlook of these Credit Ratings (ratings) is stable. The ratings reflect STGM’s balance sheet strength, which A.M. Best categorizes as very strong, as well as its adequate operating performance, neutral business profile and appropriat