# Portfolio overlap — BND vs S000004287

Comparing **VANGUARD TOTAL BOND MARKET INDEX FUND** (2026-03-31) and **U.S. Total Bond Index Master Portfolio** (2026-03-31).

- Shared positions: 7559
- VANGUARD TOTAL BOND MARKET INDEX FUND covered by U.S. Total Bond Index Master Portfolio: 0.5772561032186457676046428992
- U.S. Total Bond Index Master Portfolio covered by VANGUARD TOTAL BOND MARKET INDEX FUND: 0.5772561032186457676046428990

## VANGUARD TOTAL BOND MARKET INDEX FUND — top positions

| Security | Weight | Shared |
|----------|--------|--------|
| Vanguard Market Liquidity Fund | 0.010685 |  |
| US TREASURY N/B | 0.004799 | ✓ |
| US TREASURY N/B | 0.004211 | ✓ |
| US TREASURY N/B | 0.004208 | ✓ |
| US TREASURY N/B | 0.004193 | ✓ |
| US TREASURY N/B | 0.004153 | ✓ |
| US TREASURY N/B | 0.004130 | ✓ |
| US TREASURY N/B | 0.004051 | ✓ |
| US TREASURY N/B | 0.003950 | ✓ |
| US TREASURY N/B | 0.003933 | ✓ |
| US TREASURY N/B | 0.003650 | ✓ |
| US TREASURY N/B | 0.003636 | ✓ |
| US TREASURY N/B | 0.003633 | ✓ |
| US TREASURY N/B | 0.003529 | ✓ |
| US TREASURY N/B | 0.003528 | ✓ |
| US TREASURY N/B | 0.003509 | ✓ |
| US TREASURY N/B | 0.003423 | ✓ |
| US TREASURY N/B | 0.003304 | ✓ |
| US TREASURY N/B | 0.003245 | ✓ |
| US TREASURY N/B | 0.003239 | ✓ |
| US TREASURY N/B | 0.003235 | ✓ |
| US TREASURY N/B | 0.003207 | ✓ |
| US TREASURY N/B | 0.003188 | ✓ |
| US TREASURY N/B | 0.003167 | ✓ |
| US TREASURY N/B | 0.003117 | ✓ |
| US TREASURY N/B | 0.003086 | ✓ |
| US TREASURY N/B | 0.002885 | ✓ |
| US TREASURY N/B | 0.002751 | ✓ |
| US TREASURY N/B | 0.002746 | ✓ |
| US TREASURY N/B | 0.002725 | ✓ |
| US TREASURY N/B | 0.002602 | ✓ |
| US TREASURY N/B | 0.002428 | ✓ |
| US TREASURY N/B | 0.002421 | ✓ |
| US TREASURY N/B | 0.002415 | ✓ |
| US TREASURY N/B | 0.002412 | ✓ |
| US TREASURY N/B | 0.002401 | ✓ |
| US TREASURY N/B | 0.002394 | ✓ |
| US TREASURY N/B | 0.002392 | ✓ |
| US TREASURY N/B | 0.002360 | ✓ |
| US TREASURY N/B | 0.002358 | ✓ |
| US TREASURY N/B | 0.002330 | ✓ |
| US TREASURY N/B | 0.002312 | ✓ |
| US TREASURY N/B | 0.002295 | ✓ |
| US TREASURY N/B | 0.002286 | ✓ |
| US TREASURY N/B | 0.002284 | ✓ |
| US TREASURY N/B | 0.002276 | ✓ |
| US TREASURY N/B | 0.002272 | ✓ |
| US TREASURY N/B | 0.002256 | ✓ |
| US TREASURY N/B | 0.002244 | ✓ |
| US TREASURY N/B | 0.002240 | ✓ |

## U.S. Total Bond Index Master Portfolio — top positions

| Security | Weight | Shared |
|----------|--------|--------|
| BlackRock Cash Funds: Institutional, SL Agency Shares | 0.046939 |  |
| BlackRock Cash Funds: Treasury, SL Agency Shares | 0.030958 |  |
| US TREASURY N/B | 0.005216 | ✓ |
| US TREASURY N/B | 0.004937 | ✓ |
| US TREASURY N/B | 0.004462 | ✓ |
| US TREASURY N/B | 0.004409 | ✓ |
| US TREASURY N/B | 0.004381 | ✓ |
| US TREASURY N/B | 0.004303 | ✓ |
| US TREASURY N/B | 0.004293 | ✓ |
| US TREASURY N/B | 0.004220 | ✓ |
| US TREASURY N/B | 0.004185 | ✓ |
| US TREASURY N/B | 0.004052 | ✓ |
| US TREASURY N/B | 0.003960 | ✓ |
| US TREASURY N/B | 0.003893 | ✓ |
| US TREASURY N/B | 0.003870 | ✓ |
| US TREASURY N/B | 0.003846 | ✓ |
| US TREASURY N/B | 0.003799 | ✓ |
| US TREASURY N/B | 0.003785 | ✓ |
| US TREASURY N/B | 0.003750 | ✓ |
| US TREASURY N/B | 0.003725 | ✓ |
| US TREASURY N/B | 0.003662 | ✓ |
| US TREASURY N/B | 0.003442 | ✓ |
| FR SD8199 | 0.003424 | ✓ |
| US TREASURY N/B | 0.003372 | ✓ |
| US TREASURY N/B | 0.003224 | ✓ |
| US TREASURY N/B | 0.003207 | ✓ |
| US TREASURY N/B | 0.003165 | ✓ |
| US TREASURY N/B | 0.003157 | ✓ |
| G2 MB0025 | 0.003123 | ✓ |
| US TREASURY N/B | 0.003109 | ✓ |
| US TREASURY N/B | 0.003106 | ✓ |
| US TREASURY N/B | 0.003094 | ✓ |
| US TREASURY N/B | 0.003020 | ✓ |
| US TREASURY N/B | 0.002995 | ✓ |
| FN MA4465 | 0.002968 |  |
| US TREASURY N/B | 0.002951 | ✓ |
| US TREASURY N/B | 0.002828 | ✓ |
| US TREASURY N/B | 0.002786 | ✓ |
| US TREASURY N/B | 0.002717 | ✓ |
| US TREASURY N/B | 0.002672 | ✓ |
| US TREASURY N/B | 0.002667 | ✓ |
| FR SD8212 | 0.002661 | ✓ |
| FN MA4512 | 0.002626 | ✓ |
| US TREASURY N/B | 0.002620 | ✓ |
| US TREASURY N/B | 0.002591 | ✓ |
| US TREASURY N/B | 0.002569 | ✓ |
| US TREASURY N/B | 0.002567 | ✓ |
| US TREASURY N/B | 0.002556 | ✓ |
| US TREASURY N/B | 0.002507 | ✓ |
| US TREASURY N/B | 0.002480 | ✓ |


## Sources

- N-PORT (fund A) — accession `0000794105-26-000185` (as of 2026-03-31)
  <https://www.sec.gov/Archives/edgar/data/794105/000079410526000185/0000794105-26-000185-index.htm>
- N-PORT (fund B) — accession `0001410368-26-054525` (as of 2026-03-31)
  <https://www.sec.gov/Archives/edgar/data/915092/000141036826054525/0001410368-26-054525-index.htm>

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