# Portfolio overlap — VCBDX vs FIFZX Comparing **Core Bond Fund** (2026-02-28) and **Fidelity Series Bond Index Fund** (2026-02-28). - Shared positions: 448 - Core Bond Fund covered by Fidelity Series Bond Index Fund: 0.1199403109822014302415903690 - Fidelity Series Bond Index Fund covered by Core Bond Fund: 0.1199403109822014302415903691 ## Core Bond Fund — top positions | Security | Weight | Shared | |----------|--------|--------| | US TREASURY N/B | 0.016240 | ✓ | | US TREASURY N/B | 0.013328 | ✓ | | US TREASURY N/B | 0.013048 | ✓ | | US TREASURY N/B | 0.011442 | ✓ | | FN MA4549 | 0.010690 | | | US TREASURY N/B | 0.009913 | ✓ | | U.S. Treasury STRIPS Coupon | 0.009394 | | | US TREASURY N/B | 0.008237 | ✓ | | Fannie Mae Pool | 0.007543 | | | US TREASURY N/B | 0.007397 | ✓ | | US TREASURY N/B | 0.007387 | ✓ | | US TREASURY N/B | 0.006927 | ✓ | | US TREASURY N/B | 0.006869 | ✓ | | FN MA4737 | 0.006726 | | | US TREASURY N/B | 0.006682 | ✓ | | US TREASURY N/B | 0.006632 | | | G2 MA7472 | 0.006431 | ✓ | | FN MA4356 | 0.005740 | ✓ | | US TREASURY N/B | 0.005710 | ✓ | | US TREASURY N/B | 0.005673 | | | FR SD8178 | 0.005289 | ✓ | | FN MA4580 | 0.005181 | ✓ | | FN CB3298 | 0.005090 | | | US TREASURY N/B | 0.004973 | ✓ | | US TREASURY N/B | 0.004835 | ✓ | | FR SD8288 | 0.004812 | ✓ | | State Street Navigator Securities Lending Portfolio II | 0.004592 | | | AVOLON HOLDINGS FUNDING LTD 4.375% 05/01/2026 144A | 0.004545 | | | FN MA4579 | 0.004465 | ✓ | | US TREASURY N/B | 0.004361 | ✓ | | FANNIE MAE POOL FN FS1931 | 0.004250 | | | FR SD8349 | 0.004120 | ✓ | | US TREASURY N/B | 0.004102 | ✓ | | US TREASURY N/B | 0.004069 | ✓ | | ONE BRYANT PK TR 2019-OBP 2.51641% 09/15/2054 144A | 0.004055 | | | US TREASURY N/B | 0.004013 | | | US TREASURY N/B | 0.003955 | ✓ | | UMBS, 30 Year | 0.003922 | | | FR SB8510 | 0.003901 | | | FR SD8475 | 0.003880 | ✓ | | FN MA4329 | 0.003594 | | | US TREASURY N/B | 0.003565 | ✓ | | US TREASURY N/B | 0.003538 | | | US TREASURY N/B | 0.003524 | ✓ | | FNMA, 30 Year | 0.003508 | | | US TREASURY N/B | 0.003505 | ✓ | | FNCL UMBS 2.0 FS1742 03-01-52 | 0.003463 | | | FNMA POOL FM8422 FN 08/51 FIXED VAR | 0.003404 | ✓ | | FNMA POOL MA5294 FN 03/54 FIXED 5 | 0.003345 | | | Fannie Mae Pool | 0.003301 | | ## 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 | | ## Sources - N-PORT (fund A) — accession `0001410368-26-041611` (as of 2026-02-28) - N-PORT (fund B) — accession `0000035402-26-002627` (as of 2026-02-28) --- _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 _