# United States of America U.S. Treasury Bonds

United States of America U.S. Treasury Bonds is a security (CUSIP 912810TB4) tracked across SEC portfolio filings. 23 registered fund positions totaling $395.8M via N-PORT as of 2026-05-31.

## Summary

- Issuer: United States of America
- Class: U.S. Treasury Bonds
- CUSIP: 912810TB4
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 23
- N-PORT value: $395.8M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

_Showing 15 of 23 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [JPMorgan Core Bond Fund](https://search.stillhousedata.com/fund/S000003477) | JPMorgan Trust II | $108.8M | 20.60% |
| [Fidelity Total Bond Fund](https://search.stillhousedata.com/fund/S000007066) | Fidelity Income Fund | $84.9M | 19.95% |
| [VANGUARD LONG-TERM TREASURY FUND](https://search.stillhousedata.com/fund/S000002589) | VANGUARD FIXED INCOME SECURITIES FUNDS | $45.2M | 163.28% |
| [Mercer Opportunistic Fixed Income Fund](https://search.stillhousedata.com/fund/S000041478) | Mercer Funds | $31.7M | 149.75% |
| [Master Total Return Portfolio](https://search.stillhousedata.com/fund/S000004067) | Master Bond LLC | $24.2M | 12.81% |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $19.8M | 11.11% |
| [Fidelity Total Bond ETF](https://search.stillhousedata.com/fund/S000042567) | Fidelity Merrimack Street Trust | $17.4M | 6.67% |
| [Bond Fund of America](https://search.stillhousedata.com/fund/S000009231) | Bond Fund of America | $17.0M | 1.71% |
| [American Balanced Fund](https://search.stillhousedata.com/fund/S000008801) | American Balanced Fund | $14.0M | 0.53% |
| [U.S. Government Securities Fund](https://search.stillhousedata.com/fund/S000009235) | AMERICAN FUNDS INCOME SERIES | $11.3M | 4.67% |
| [Transamerica Bond](https://search.stillhousedata.com/fund/S000007796) | TRANSAMERICA FUNDS | $5.2M | 22.28% |
| [MFS Total Return Fund](https://search.stillhousedata.com/fund/S000002439) | MFS Series Trust V | $5.0M | 6.63% |
| [BlackRock Balanced Fund, Inc.](https://search.stillhousedata.com/fund/S000002175) | BlackRock Balanced Fund, Inc. | $4.1M | 22.50% |
| [HARTFORD TOTAL RETURN BOND HLS FUND](https://search.stillhousedata.com/fund/S000003222) | HARTFORD SERIES FUND INC | $2.8M | 20.93% |
| [Capital World Bond Fund](https://search.stillhousedata.com/fund/S000009240) | Capital World Bond Fund | $1.2M | 1.18% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/912810TB4.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.