| FOF Code | Description |
| + FL713061103.Q | Monetary authority; total Treasury securities; asset |
| + FL403061105.Q | Government-sponsored enterprises; Treasury securities; asset |
| + FL703061105.Q | Private depository institutions; 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 |
| + FL503061123.Q | Other financial business; Treasury securities held by central clearing counterparties; asset |