Credit ratings agency AM Best has revised the outlooks of Renaissance Reinsurance Ltd. (RenRe) and its subsidiaries to positive from stable for the Long-Term Issuer Credit Ratings (Long-Term ICRs), and affirmed the Financial Strength Rating (FSR) of A+ (Superior) and the Long-Term ICRs of “aa-” (Superior).The subsidiaries include Renaissance Reinsurance U.S. Inc., RenaissanceRe Specialty U.S. Ltd., Renaissance Reinsurance of Europe Designated Activity Company, and RenaissanceRe Europe AG. The outlook of the ...