On a recent Max Keiser episode on PressTV Cynthia McKinney mentioned most Financial assets in the U.S. are influenced or heavily owned by three firms.
Blackrock Institutional Investors
State Street Investments
To see who runs these outfits, I ran the NNDB database on these outfits.
Curiously, The Vanguard Group doesn't come up on the database at all, although individuals within it do.