OLDWICK, N.J.–(BUSINESS WIRE)–AM Best has affirmed the Financial Strength Rating (FSR) of A+ (Superior) and the Long-Term Issuer Credit Ratings (Long-Term ICR) of “aa-” of Sun Life Assurance Company of Canada (Sun Life) (Ontario, Canada) and Sun Life and Health Insurance Company (U.S.) (SLHIC) (Lansing, MI) – the core insurance subsidiaries of Sun Life Financial Inc. (SLF) (Ontario, Canada) (NYSE: SLF) (collectively referred to as Sun Life Group). Concurrently, AM Best has affirmed the Long-T
