| FOF Code | Description |
| + FA663061005.Q | Security brokers and dealers; total U.S. government securities; asset |
| + FA653061003.Q | Mutual funds; total U.S. government securities; asset |
| + FA633061005.Q | Money market mutual funds; total U.S. government securities; asset |
| + FA673061005.Q | Issuers of asset-backed securities; total U.S. government securities; asset |
| + FA553061103.Q | Closed-end funds; Treasury securities; asset |
| + FA643061773.Q | Mortgage real estate investment trusts; agency- and GSE-backed securities; asset |
| + FA563061103.Q | Exchange-traded funds; Treasury securities; asset |
| + FA733061005.Q | Holding companies; total U.S. government securities; asset |