# Portfolio overlap — FIFZX vs LUTAX

Comparing **Fidelity Series Bond Index Fund** (2026-02-28) and **Columbia U.S. Treasury Index Fund** (2026-01-31).

- Shared positions: 215
- Fidelity Series Bond Index Fund covered by Columbia U.S. Treasury Index Fund: 0.3447995221107980960011407501
- Columbia U.S. Treasury Index Fund covered by Fidelity Series Bond Index Fund: 0.3447995221107980960011407502

## 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 |  |

## Columbia U.S. Treasury Index Fund — top positions

| Security | Weight | Shared |
|----------|--------|--------|
| US TREASURY N/B | 0.009020 | ✓ |
| US TREASURY N/B | 0.008851 | ✓ |
| US TREASURY N/B | 0.008754 | ✓ |
| US TREASURY N/B | 0.008742 | ✓ |
| US TREASURY N/B | 0.008599 | ✓ |
| US TREASURY N/B | 0.008530 | ✓ |
| US TREASURY N/B | 0.008526 | ✓ |
| US TREASURY N/B | 0.008426 | ✓ |
| US TREASURY N/B | 0.007907 | ✓ |
| US TREASURY N/B | 0.007666 | ✓ |
| US TREASURY N/B | 0.007246 |  |
| US TREASURY N/B | 0.007039 | ✓ |
| US TREASURY N/B | 0.007032 |  |
| US TREASURY N/B | 0.007031 | ✓ |
| US TREASURY N/B | 0.007027 |  |
| US TREASURY N/B | 0.006976 |  |
| US TREASURY N/B | 0.006954 | ✓ |
| US TREASURY N/B | 0.006949 | ✓ |
| US TREASURY N/B | 0.006884 | ✓ |
| US TREASURY N/B | 0.006625 | ✓ |
| US TREASURY N/B | 0.006609 |  |
| US TREASURY N/B | 0.006520 |  |
| US TREASURY N/B | 0.006445 | ✓ |
| US TREASURY N/B | 0.005704 | ✓ |
| US TREASURY N/B | 0.005431 |  |
| US TREASURY N/B | 0.005426 | ✓ |
| US TREASURY N/B | 0.005338 | ✓ |
| US TREASURY N/B | 0.005302 | ✓ |
| US TREASURY N/B | 0.005281 |  |
| US TREASURY N/B | 0.005159 | ✓ |
| US TREASURY N/B | 0.005133 | ✓ |
| US TREASURY N/B | 0.005131 | ✓ |
| US TREASURY N/B | 0.005119 | ✓ |
| US TREASURY N/B | 0.005119 | ✓ |
| US TREASURY N/B | 0.005108 |  |
| US TREASURY N/B | 0.005084 | ✓ |
| US TREASURY N/B | 0.005080 | ✓ |
| US TREASURY N/B | 0.005058 | ✓ |
| US TREASURY N/B | 0.005057 | ✓ |
| US TREASURY N/B | 0.005052 | ✓ |
| US TREASURY N/B | 0.005035 |  |
| US TREASURY N/B | 0.005035 | ✓ |
| US TREASURY N/B | 0.005028 | ✓ |
| US TREASURY N/B | 0.005000 | ✓ |
| US TREASURY N/B | 0.004996 | ✓ |
| US TREASURY N/B | 0.004982 | ✓ |
| US TREASURY N/B | 0.004978 | ✓ |
| US TREASURY N/B | 0.004951 |  |
| US TREASURY N/B | 0.004949 | ✓ |
| US TREASURY N/B | 0.004947 |  |


## Sources

- N-PORT (fund A) — accession `0000035402-26-002627` (as of 2026-02-28)
  <https://www.sec.gov/Archives/edgar/data/35315/000003540226002627/0000035402-26-002627-index.htm>
- N-PORT (fund B) — accession `0001410368-26-033335` (as of 2026-01-31)
  <https://www.sec.gov/Archives/edgar/data/773757/000141036826033335/0001410368-26-033335-index.htm>

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_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._

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