OLDWICK: Global rating agenct AM Best has affirmed the Financial Strength Rating of A- (Excellent) and the Long-Term Issuer Credit Rating (Long-Term ICR) of “a-” of Kingstone Insurance Company (KICO). Concurrently, AM Best has affirmed the Long-Term ICR of “bbb-” of Kingstone Companies Inc. (KINS) (Delaware), the insurance holding company of KICO. AM Best also…