AllianceBernstein Holding L.P. (AB Holding) is engaged in providing research, investment management and related services to a range of clients. The Company's principal services include institutional services, retail services, private wealth management services and Bernstein research services. AB Holding owns 36.9% of limited partnership interest in AllianceBernstein L.P. (AB). Its investment services include actively managed equity strategies with global and regional portfolios across capitalization ranges and investment strategies; actively managed traditional and unconstrained fixed income strategies; passive management, including index and enhanced index strategies; alternative investments, including hedge funds, fund of funds and private equity (direct real estate investing), and multi-asset services and solutions. Its institutions and retail businesses are referred to as AB, and private wealth management and Bernstein Research Services are referred to as AB Bernstein.