# United States Treasury Inflation Indexed Bonds TSY INFL IX N/B

United States Treasury Inflation Indexed Bonds TSY INFL IX N/B is a security (CUSIP 9128283R9) tracked across SEC portfolio filings. 20 registered fund positions totaling $4.0B via N-PORT as of 2026-05-31.

## Summary

- Issuer: United States Treasury Inflation Indexed Bonds
- Class: TSY INFL IX N/B
- CUSIP: 9128283R9
- Asset category: SN
- 13F holders: 0
- N-PORT fund positions: 20
- N-PORT value: $4.0B
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

_Showing 15 of 20 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD SHORT-TERM INFLATION-PROTECTED SECURITIES INDEX FUND](https://search.stillhousedata.com/fund/S000038501) | VANGUARD MALVERN FUNDS | $2.9B | 432.73% |
| [American Funds Inflation Linked Bond Fund](https://search.stillhousedata.com/fund/S000039115) | American Funds Inflation Linked Bond Fund | $633.4M | 480.15% |
| [T. Rowe Price Limited-Duration Inflation Focused Bond Fund, Inc.](https://search.stillhousedata.com/fund/S000013369) | T. ROWE PRICE LIMITED-DURATION INFLATION FOCUSED BOND FUND, INC. | $255.4M | 249.30% |
| [T. Rowe Price U.S. Limited Duration TIPS Index Fund](https://search.stillhousedata.com/fund/S000069930) | T. ROWE PRICE INDEX TRUST, INC. | $99.5M | 371.81% |
| [Fidelity Inflation-Protected Bond Index Central Fund](https://search.stillhousedata.com/fund/S000036933) | Fidelity Central Investment Portfolios II LLC | $28.3M | 359.55% |
| [DoubleLine Core Fixed Income Fund](https://search.stillhousedata.com/fund/S000028164) | DoubleLine Funds Trust | $19.7M | 28.78% |
| [VP Inflation Protection Fund](https://search.stillhousedata.com/fund/S000006680) | American Century Variable Portfolios II, Inc. | $18.4M | 330.79% |
| [T. Rowe Price Inflation Protected Bond Fund, Inc.](https://search.stillhousedata.com/fund/S000002133) | T. ROWE PRICE INFLATION PROTECTED BOND FUND, INC. | $15.3M | 265.59% |
| Western Asset Inflation-Linked Opportunities & Income Fund | Western Asset Inflation-Linked Opportunities & Income Fund | $14.5M | 248.31% |
| [BNY Mellon Bond Fund](https://search.stillhousedata.com/fund/S000000375) | BNY MELLON FUNDS TRUST | $10.6M | 88.94% |
| [SIMT Multi-Asset Accumulation Fund](https://search.stillhousedata.com/fund/S000035779) | SEI INSTITUTIONAL MANAGED TRUST | $8.1M | 69.81% |
| [Short Duration Inflation Protection Bond Fund](https://search.stillhousedata.com/fund/S000006581) | American Century Investment Trust | $7.6M | 64.33% |
| Western Asset Inflation-Linked Income Fund | Western Asset Inflation-Linked Income Fund | $6.6M | 312.40% |
| [Federated Hermes Short-Intermediate Total Return Bond Fund](https://search.stillhousedata.com/fund/S000009741) | Federated Hermes Institutional Trust | $6.6M | 104.77% |
| [AB GLOBAL RISK ALLOCATION FUND, INC.](https://search.stillhousedata.com/fund/S000009974) | AB GLOBAL RISK ALLOCATION FUND, INC. | $4.3M | 259.16% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/9128283R9.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.