OLDWICK, N.J.–(BUSINESS WIRE)–A.M. Best has upgraded the Financial Strength Rating to A (Excellent) from A- (Excellent) and the Long-Term Issuer Credit Rating (Long-Term ICR) to “a” from “a-” of the members of Athene Group. (See below for a detailed listing of Athene Group’s members and ratings.) The outlook of these Credit Ratings (ratings) has been revised to stable from positive. Athene Group is the consolidating rating unit for the U.S. operating companies, which is focused on the fixed i