OLDWICK, N.J.–(BUSINESS WIRE)– #insurance–AM Best has affirmed the Financial Strength Rating of A (Excellent) and the Long-Term Issuer Credit Rating of “a” (Excellent) of the operating subsidiaries of MGIC Investment Corporation [NYSE: MTG]. The operating subsidiaries are Mortgage Guaranty Insurance Corporation, MGIC Indemnity Corporation and MGIC Assurance Corporation (collectively referred to as MGIC). All companies are domiciled in Milwaukee, WI. The outlook of these Credit Ratings (ratings) is stable.