MEXICO CITY–(BUSINESS WIRE)– AM Best has affirmed the Mexico National Scale Rating (NSR) of "aa-.MX" and the Long-Term Issuer Credit Rating (Long-Term ICR) of "bbb-" of Grupo Financiero Aserta, S.A. de C.V. (GFA). Concurrently, AM Best has affirmed the Mexico NSR of "aaa.MX", the Financial Strength Rating of A- (Excellent) and the Long-Term ICR of "a-" of Aseguradora Insurgentes, S.A. de C.V. (AISA) and its sister company, Aseguradora Aserta, S.A. de C.V. (Aserta), which are the main subsidiaries of GFA. The outlook of these Credit Ratings (ratings) remains stable. All companies are domiciled in Mexico City, Mexico. The ratings reflect AISA's and Aserta's balance sheet strength, which AM Best categorizes as very strong, as well as their strong operating performance, neutral business profile and appropriate enterprise risk management (ERM).