# Portfolio overlap — FIFZX vs VTBIX Comparing **Fidelity Series Bond Index Fund** (2026-02-28) and **VANGUARD TOTAL BOND MARKET II INDEX FUND** (2026-03-31). - Shared positions: 4187 - Fidelity Series Bond Index Fund covered by VANGUARD TOTAL BOND MARKET II INDEX FUND: 0.3688951692453503147168750580 - VANGUARD TOTAL BOND MARKET II INDEX FUND covered by Fidelity Series Bond Index Fund: 0.3688951692453503147168750578 ## Fidelity Series Bond Index Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | US TREASURY N/B | 0.011257 | ✓ | | US TREASURY N/B | 0.010648 | ✓ | | US TREASURY N/B | 0.009228 | ✓ | | US TREASURY N/B | 0.008011 | ✓ | | US TREASURY N/B | 0.007152 | ✓ | | US TREASURY N/B | 0.006840 | ✓ | | US TREASURY N/B | 0.006594 | ✓ | | Fidelity Cash Central Fund | 0.006318 | | | US TREASURY N/B | 0.006218 | ✓ | | US TREASURY N/B | 0.006205 | ✓ | | US TREASURY N/B | 0.006178 | ✓ | | Fidelity Securities Lending Cash Central Fund | 0.005920 | | | US TREASURY N/B | 0.005903 | ✓ | | US TREASURY N/B | 0.005772 | ✓ | | US TREASURY N/B | 0.005443 | ✓ | | US TREASURY N/B | 0.005260 | ✓ | | US TREASURY N/B | 0.005202 | ✓ | | US TREASURY N/B | 0.004961 | ✓ | | US TREASURY N/B | 0.004954 | ✓ | | US TREASURY N/B | 0.004949 | ✓ | | US TREASURY N/B | 0.004926 | ✓ | | FR SD8121 | 0.004907 | ✓ | | US TREASURY N/B | 0.004843 | ✓ | | US TREASURY N/B | 0.004554 | ✓ | | US TREASURY N/B | 0.004535 | ✓ | | US TREASURY N/B | 0.004417 | ✓ | | US TREASURY N/B | 0.004405 | ✓ | | US TREASURY N/B | 0.004379 | ✓ | | US TREASURY N/B | 0.004205 | ✓ | | US TREASURY N/B | 0.004121 | ✓ | | US TREASURY N/B | 0.003897 | ✓ | | US TREASURY N/B | 0.003895 | ✓ | | US TREASURY N/B | 0.003890 | ✓ | | US TREASURY N/B | 0.003882 | ✓ | | US TREASURY N/B | 0.003846 | | | US TREASURY N/B | 0.003830 | ✓ | | US TREASURY N/B | 0.003818 | ✓ | | US TREASURY N/B | 0.003748 | ✓ | | US TREASURY N/B | 0.003696 | ✓ | | US TREASURY N/B | 0.003667 | ✓ | | US TREASURY N/B | 0.003631 | ✓ | | US TREASURY N/B | 0.003625 | ✓ | | US TREASURY N/B | 0.003611 | ✓ | | US TREASURY N/B | 0.003608 | ✓ | | US TREASURY N/B | 0.003580 | ✓ | | US TREASURY N/B | 0.003496 | ✓ | | US TREASURY N/B | 0.003480 | ✓ | | US TREASURY N/B | 0.003479 | ✓ | | G2SF 5 3/25 | 0.003405 | | | US TREASURY N/B | 0.003367 | | ## VANGUARD TOTAL BOND MARKET II INDEX FUND — top positions | Security | Weight | Shared | |----------|--------|--------| | Vanguard Market Liquidity Fund | 0.052417 | | | US TREASURY N/B | 0.014117 | | | US TREASURY N/B | 0.013634 | | | U.S. Treasury Notes | 0.007803 | | | U.S. Treasury Notes | 0.006637 | | | US TREASURY N/B | 0.005586 | | | US TREASURY N/B | 0.003856 | ✓ | | US TREASURY N/B | 0.003675 | | | US TREASURY N/B | 0.003623 | ✓ | | US TREASURY N/B | 0.003495 | ✓ | | US TREASURY N/B | 0.003466 | ✓ | | US TREASURY N/B | 0.003362 | ✓ | | US TREASURY N/B | 0.003344 | ✓ | | US TREASURY N/B | 0.003285 | ✓ | | US TREASURY N/B | 0.003128 | | | US TREASURY N/B | 0.003124 | ✓ | | US TREASURY N/B | 0.003099 | ✓ | | US TREASURY N/B | 0.003075 | ✓ | | US TREASURY N/B | 0.003056 | ✓ | | US TREASURY N/B | 0.003046 | | | US TREASURY N/B | 0.002957 | ✓ | | US TREASURY N/B | 0.002934 | | | US TREASURY N/B | 0.002931 | | | US TREASURY N/B | 0.002895 | | | US TREASURY N/B | 0.002861 | ✓ | | US TREASURY N/B | 0.002842 | ✓ | | US TREASURY N/B | 0.002788 | ✓ | | US TREASURY N/B | 0.002784 | ✓ | | US TREASURY N/B | 0.002703 | ✓ | | US TREASURY N/B | 0.002686 | ✓ | | US TREASURY N/B | 0.002683 | ✓ | | US TREASURY N/B | 0.002619 | | | US TREASURY N/B | 0.002610 | ✓ | | US TREASURY N/B | 0.002568 | | | US TREASURY N/B | 0.002564 | ✓ | | US TREASURY N/B | 0.002556 | ✓ | | US TREASURY N/B | 0.002537 | | | US TREASURY N/B | 0.002492 | ✓ | | US TREASURY N/B | 0.002473 | | | US TREASURY N/B | 0.002444 | ✓ | | US TREASURY N/B | 0.002427 | | | US TREASURY N/B | 0.002415 | ✓ | | US TREASURY N/B | 0.002409 | ✓ | | US TREASURY N/B | 0.002394 | ✓ | | US TREASURY N/B | 0.002371 | ✓ | | US TREASURY N/B | 0.002365 | ✓ | | US TREASURY N/B | 0.002352 | | | US TREASURY N/B | 0.002325 | | | US TREASURY N/B | 0.002295 | | | US TREASURY N/B | 0.002256 | ✓ | ## Sources - N-PORT (fund A) — accession `0000035402-26-002627` (as of 2026-02-28) - N-PORT (fund B) — accession `0000794105-26-000186` (as of 2026-03-31) --- _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 _