Moody's Investors Service ("Moody's") today placed on review for downgrade Advisor Group Holdings, Inc.'s (Advisor Group) B2 corporate family rating (CFR), B1 $1,225 million senior secured term loan and $225 million senior secured revolving credit facility, and Caa1 $350 million senior unsecured notes. The review for downgrade follows Advisor Group's announcement that it has agreed to acquire publicly-held Ladenburg Thalmann Financial Services Inc. (Ladenburg Thalmann, unrated) for an enterprise value of $1.3 billion (including common stock, preferred stock and outstanding debt).