AMSTERDAM--(BUSINESS WIRE)-- #insurance--AM Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Rating of āa-ā (Excellent) of AmTrust Assicurazioni S.p.A. (AmTrust Assicurazioni) (Italy). The outlook of these Credit Ratings (ratings) is stable. The ratings reflect AmTrust Assicurazioniās balance sheet strength, which AM Best assesses as very strong, as well as its adequate operating performance, limited business profile and appropriate enterprise risk management