SINGAPORE–(BUSINESS WIRE)–A.M. Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Rating of “a-” of nib nz limited (nib nz) (New Zealand). The outlook of these Credit Ratings (ratings) is stable. The ratings reflect nib nz’s strong risk-adjusted capitalization and continued favorable operating performance. The company’s strong risk-adjusted capitalization, as measured by Best’s Capital Adequacy Ratio (BCAR), is due to its low product risk profile