Moody's said it has affirmed the long-term debt ratings for Zenith National Insurance Corporation, with a Ba1 rating assigned to its senior unsecured debt, and a Baa1 insurance financial strength rating for the company's property and casualty affiliates.
At the same time, Moody's also said it had changed its rating outlook for Zenith to stable from negative following Zenith's year-end earnings, which showed solid improvements.
