Blackstone also ventured into other businesses, most notably investment management. In 1987 Blackstone entered into a 50–50 partnership with the founders of BlackRock, Larry Fink and Ralph Schlosstein. The two founders, who had previously run the mortgage-backed securities divisions at First Boston and Lehman Brothers, respectively, initially joined Blackstone to manage an investment fund and provide advice to financial institutions. They also planned to use a Blackstone fund to invest in financial institutions and help build an asset management business specializing in fixed income investments.