| FOF Code | Description |
| + FL103061103.Q | Nonfinancial corporate business; Treasury securities; asset |
| + FL153061105.Q | Households and nonprofit organizations; Treasury securities; asset |
| + FL213061103.Q | State and local governments; Treasury securities, excluding SLGS; asset |
| + FL113061003.Q | Nonfinancial noncorporate business; total U.S. government securities; asset |
| + FL763061100.Q | U.S.-chartered depository institutions; Treasury securities; asset |
| + FL743061103.Q | Banks in U.S.-affiliated areas; Treasury securities; asset |
| + FL753061103.Q | Foreign banking offices in the U.S.; Treasury securities; asset |
| + FL403061105.Q | Government-sponsored enterprises; Treasury securities; asset |
| + FL473061105.Q | Credit unions; Treasury securities; asset |
| + FL583061105.Q | Insurance companies and pension funds; Treasury securities; asset |
| + FL663061105.Q | Security brokers and dealers; Treasury securities (net); asset |
| + FL633061105.Q | Money market funds; Treasury securities; asset |
| + FL653061105.Q | Mutual funds; Treasury securities; asset (market value) |
| + FL553061103.Q | Closed-end funds; Treasury securities; asset |
| + FL563061103.Q | Exchange-traded funds; Treasury securities; asset |
| + FL673061103.Q | Issuers of asset-backed securities; Treasury securities; asset |
| + FL733061103.Q | Holding companies; Treasury securities; asset |
| + FL263061105.Q | Rest of the world; Treasury securities; asset |
| + FL713061103.Q | Monetary authority; total Treasury securities; asset |
| + FL503061123.Q | Other financial business; Treasury securities held by central clearing counterparties; asset |