How are assets distributed by types of organisations? How wealth, assets or capital (measured in terms of revenues, assets, equity, etc.) is distributed among the various types of organizations (e.g. State, public companies, private conpanies, individuals) existing in an economy?
The Flow of Funds (Financial Accounts of the United States) should have what you need. 

For example, table  B.1 Net National Wealth Table Description Table (Billions of dollars; amounts outstanding end of period, not seasonally adjusted) might be very close to what you want.