AM Best has affirmed the Financial Strength Rating [FSR] of A+ [Superior] and the Long-Term Issuer Credit Ratings [Long-Term ICR] of “aa-” [Superior] for Arch Reinsurance Ltd. and its strategic affiliates. The ratings agency said, “Concurrently, AM Best has affirmed the Long-Term ICRs of “a-” [Excellent] and the Long-Term Issue Credit Ratings [Long-Term IRs] of […]