# Portfolio overlap — VIPIX vs FIPDX

Comparing **VANGUARD INFLATION-PROTECTED SECURITIES FUND** (2026-03-31) and **Fidelity Inflation-Protected Bond Index Fund** (2026-03-31).

- Shared positions: 48
- VANGUARD INFLATION-PROTECTED SECURITIES FUND covered by Fidelity Inflation-Protected Bond Index Fund: 0.8870819513922889870995265012
- Fidelity Inflation-Protected Bond Index Fund covered by VANGUARD INFLATION-PROTECTED SECURITIES FUND: 0.8870819513922889870995265013

## VANGUARD INFLATION-PROTECTED SECURITIES FUND — top positions

| Security | Weight | Shared |
|----------|--------|--------|
| U.S. Treasury Inflation-Protected Indexed Notes | 0.039405 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Notes | 0.037060 | ✓ |
| U.S. Treasury Inflation-Protected Notes 1.75%, Due 01/15/2034 | 0.035358 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.375 07/15/33 | 0.033040 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.125% 01/15/2033 | 0.032960 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 07/15/2032 | 0.032876 | ✓ |
| U.S. Treasury Notes | 0.032455 | ✓ |
| U.S. Treasury Notes | 0.032429 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Notes | 0.031804 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 2.375% 10/15/2028 | 0.031276 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 07/15/2028 | 0.031158 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  01/15/32 | 0.030920 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-5/8% 10/15/27 | 0.029471 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028 | 0.029399 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 04/15/2027 | 0.028779 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 07/15/2031 | 0.028286 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031 | 0.027934 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030 | 0.027111 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/2% 01/15/2028 | 0.026014 | ✓ |
| U.S. Treasury Notes 0.125%, Due 1/15/2030 | 0.025832 | ✓ |
| U.S. Treasury Notes | 0.022695 | ✓ |
| U.S. Treasury Inflation-Linked Notes | 0.021807 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029 | 0.020190 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES .25%  07/15/29 | 0.019755 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/8% 07/15/2027 | 0.019474 | ✓ |
| US TREASURY N/B | 0.019249 |  |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2045 | 0.016668 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29 | 0.013764 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/8% 02/15/2044 | 0.012858 | ✓ |
| US TREASURY N/B | 0.012086 |  |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-5/8% 04/15/28 | 0.011681 | ✓ |
| U.S. Treasury Inflation-Indexed Notes | 0.011358 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 2-1/2% 01/15/29 | 0.011091 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Bonds | 0.010998 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/4% 01/15/28 | 0.010977 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2042 | 0.010657 | ✓ |
| U.S. Treasury Inflation-Protected Notes 2.125%, Due 02/15/2054 | 0.010186 | ✓ |
| Vanguard Market Liquidity Fund | 0.009589 |  |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.50% 2/15/2053 | 0.009232 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Bonds | 0.009114 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  02/15/2052 | 0.007219 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/46 | 0.006424 | ✓ |
| UNITED STATES TREASURY INFLATION INDEXED BONDS I/L 2.375% 02-15-56 | 0.006332 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 02/15/2043 | 0.006192 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0.25% 02/15/2050 | 0.006162 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Bonds | 0.005802 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 2 1/8% 02/15/40 | 0.005779 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-7/8% 02/15/2047 | 0.005606 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/48 | 0.005513 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-3/8% 04/15/32 | 0.005165 | ✓ |

## Fidelity Inflation-Protected Bond Index Fund — top positions

| Security | Weight | Shared |
|----------|--------|--------|
| U.S. Treasury Inflation-Protected Indexed Notes | 0.040490 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Notes | 0.040075 | ✓ |
| U.S. Treasury Notes | 0.039764 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.375 07/15/33 | 0.036575 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 07/15/2032 | 0.035230 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 04/15/2027 | 0.034278 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Notes | 0.032981 | ✓ |
| U.S. Treasury Inflation-Protected Notes 1.75%, Due 01/15/2034 | 0.032638 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 01/15/2031 | 0.032396 | ✓ |
| U.S. Treasury Notes | 0.031104 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 2.375% 10/15/2028 | 0.031092 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.125% 01/15/2033 | 0.030964 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES .125 07/15/2030 | 0.030843 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8% 07/15/2031 | 0.029985 | ✓ |
| U.S. Treasury Notes | 0.029584 | ✓ |
| U.S. Treasury Notes 0.125%, Due 1/15/2030 | 0.028565 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.250 04/15/2028 | 0.028399 | ✓ |
| U.S. Treasury Inflation-Linked Notes | 0.028146 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES .25%  07/15/29 | 0.027894 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/2% 01/15/2028 | 0.027760 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-5/8% 10/15/27 | 0.027648 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  01/15/32 | 0.026958 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 07/15/2028 | 0.024049 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/8% 07/15/2027 | 0.020856 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-5/8% 04/15/28 | 0.017717 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES .875% 01/15/2029 | 0.016719 | ✓ |
| U.S. Treasury Inflation-Indexed Notes | 0.014777 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 2-1/2% 01/15/29 | 0.013932 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/8% 02/15/2044 | 0.013777 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Bonds | 0.013193 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-7/8% 04/15/29 | 0.012840 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2045 | 0.012341 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1.50% 2/15/2053 | 0.011301 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-3/4% 02/15/2042 | 0.011301 | ✓ |
| Fidelity Securities Lending Cash Central Fund | 0.010993 |  |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-7/8% 02/15/2047 | 0.009590 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-5/8% 02/15/2043 | 0.009230 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 3-3/8% 04/15/32 | 0.009109 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0.25% 02/15/2050 | 0.007968 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1-3/4% 01/15/28 | 0.007904 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Bonds | 0.007790 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 0-1/8%  02/15/2052 | 0.006942 | ✓ |
| U.S. Treasury Inflation-Protected Notes 2.125%, Due 02/15/2054 | 0.006882 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 2 1/8% 02/15/40 | 0.006532 | ✓ |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/48 | 0.006417 | ✓ |
| UNITED STATES TREASURY INFLATION INDEXED BONDS I/L 2.375% 02-15-56 | 0.005754 | ✓ |
| U.S. Treasury Inflation-Protected Indexed Bonds | 0.005529 | ✓ |
| Fidelity Cash Central Fund | 0.005409 |  |
| U.S. TREASURY INFLATION-PROTECTED SECURITIES 1% 02/15/46 | 0.005347 | ✓ |
| U.S. Treasury Inflation Linked Bonds | 0.002432 | ✓ |


## Sources

- N-PORT (fund A) — accession `0000794105-26-000184` (as of 2026-03-31)
  <https://www.sec.gov/Archives/edgar/data/794105/000079410526000184/0000794105-26-000184-index.htm>
- N-PORT (fund B) — accession `0000035402-26-003383` (as of 2026-03-31)
  <https://www.sec.gov/Archives/edgar/data/35315/000003540226003383/0000035402-26-003383-index.htm>

---

_Informational only — not investment advice. FundWatcher presents publicly available data and makes no recommendation to buy or sell any security. Verify all figures against the source filing before relying on them._

_Data sourced from U.S. SEC EDGAR filings (Forms N-PORT, N-CEN, and prospectus Risk/Return summaries). FundWatcher is not affiliated with the SEC._

_Use of this data is subject to the FundWatcher Terms of Service. Information may be used only for personal, non-commercial research and may not be redistributed. See <https://fundwatcher.app/terms/>_