BlackRock is far from a household name but it is the largest asset management firm in the world, controlling $4.6 trillion in investor funds — about a trillion dollars more than the annual federal budget, and five times the assets of Goldman Sachs. And Larry Fink, BlackRock's CEO, has assembled a veritable shadow government full of former Treasury Department officials at his company.

Fink has made clear his desire to become Treasury Secretary someday. The Obama Administration had him on the short list to replace Timothy Geithner. When that didn't materialize, he pulled several members of prior Treasury Departments into high-level positions at the firm, which may improve the prospects of realizing his dream in a future Clinton Administration.