A.M. Best Co. has affirmed the financial strength rating (FSR) of A+ (Superior) and issuer credit ratings (ICR) of “aa-” of Berkley Insurance Company (BIC) (Wilmington, DE) and 24 of its reinsured subsidiaries and affiliates, collectively referred to as W. R. Berkley Insurance Group. A.M. Best also has affirmed the FSR of A+ (Superior) and ICR of “aa-” of Berkley Life and Health Insurance Company (Berkley Life and Health) (Urbandale, IA). Concurrently, A.M. Best has affirmed the ICR of “a-” and debt ratings of “a-” on senior unsecured notes and “bbb” on trust preferred securities issued by W.R. Berkley Corporation (W. R. Berkley) (Greenwich, CT) (NYSE:WRB). The outlook for all ratings is stable. (See link below for a detailed list of the companies and ratings.) The rating affirmations of the members of W. R. Berkley Insurance Group follow W. R. Berkley’s third quarter earnings release and reflect its historically favorable underwriting and operating performance, well-established market profile and solid risk-adjusted capitalization. Positive operating cash flow, good liquidity, considerable business diversification, in addition to better than average catastrophe exposure, were notable rating considerations as well. A.M. Best believes the organization’s favorable performance is largely owed to successfully executed, well-developed business strategies, which feature individual operating units focused on specific niche markets, primarily defined by geography, product orientation and distribution channel. Partially offsetting these positive rating factors are the effects of weak macroeconomic conditions, competitive market pressures impacting both the surplus lines and specialty commercial markets and declining investment yields. These ratings also recognize the favorable prior year loss reserve development reported in recent years and the earnings garnering from these redundancies. Through September 30, 2013, W. R. Berkley reported pretax income of $517 million and net income of $370 million while generating an 11% return on equity. Both income figures represent a slight improvement year over year. The company’s consolidated financial leverage measured on an unadjusted debt-to-capital basis (including trust preferred securities) stood at 33%. W. R. Berkley’s financial leverage is expected to remain virtually steady through the end of 2013.