# Portfolio overlap — BND vs AGG

Comparing **VANGUARD TOTAL BOND MARKET INDEX FUND** (2026-03-31) and **iShares Core U.S. Aggregate Bond ETF** (2026-02-28).

- Shared positions: 9201
- VANGUARD TOTAL BOND MARKET INDEX FUND covered by iShares Core U.S. Aggregate Bond ETF: 0.6407767949377279062285519666
- iShares Core U.S. Aggregate Bond ETF covered by VANGUARD TOTAL BOND MARKET INDEX FUND: 0.6407767949377279062285519665

## 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 | ✓ |

## iShares Core U.S. Aggregate Bond ETF — top positions

| Security | Weight | Shared |
|----------|--------|--------|
| BlackRock Cash Funds: Treasury, SL Agency Shares | 0.036346 |  |
| US TREASURY N/B | 0.004536 | ✓ |
| US TREASURY N/B | 0.004182 | ✓ |
| US TREASURY N/B | 0.004151 | ✓ |
| US TREASURY N/B | 0.004134 | ✓ |
| US TREASURY N/B | 0.004125 | ✓ |
| US TREASURY N/B | 0.004049 | ✓ |
| US TREASURY N/B | 0.004048 | ✓ |
| US TREASURY N/B | 0.003969 | ✓ |
| US TREASURY N/B | 0.003955 | ✓ |
| US TREASURY N/B | 0.003948 | ✓ |
| US TREASURY N/B | 0.003845 | ✓ |
| US TREASURY N/B | 0.003834 | ✓ |
| US TREASURY N/B | 0.003712 | ✓ |
| US TREASURY N/B | 0.003428 | ✓ |
| US TREASURY N/B | 0.003416 | ✓ |
| US TREASURY N/B | 0.003288 | ✓ |
| US TREASURY N/B | 0.003244 | ✓ |
| US TREASURY N/B | 0.003178 | ✓ |
| US TREASURY N/B | 0.003082 | ✓ |
| US TREASURY N/B | 0.002892 | ✓ |
| US TREASURY N/B | 0.002876 | ✓ |
| US TREASURY N/B | 0.002822 | ✓ |
| US TREASURY N/B | 0.002811 | ✓ |
| US TREASURY N/B | 0.002810 | ✓ |
| US TREASURY N/B | 0.002802 | ✓ |
| US TREASURY N/B | 0.002796 | ✓ |
| US TREASURY N/B | 0.002766 | ✓ |
| US TREASURY N/B | 0.002733 | ✓ |
| US TREASURY N/B | 0.002672 | ✓ |
| US TREASURY N/B | 0.002669 |  |
| US TREASURY N/B | 0.002629 | ✓ |
| US TREASURY N/B | 0.002462 | ✓ |
| US TREASURY N/B | 0.002460 | ✓ |
| US TREASURY N/B | 0.002422 | ✓ |
| US TREASURY N/B | 0.002390 | ✓ |
| US TREASURY N/B | 0.002363 | ✓ |
| US TREASURY N/B | 0.002323 | ✓ |
| US TREASURY N/B | 0.002319 | ✓ |
| US TREASURY N/B | 0.002303 | ✓ |
| US TREASURY N/B | 0.002295 | ✓ |
| US TREASURY N/B | 0.002278 | ✓ |
| US TREASURY N/B | 0.002274 | ✓ |
| US TREASURY N/B | 0.002273 | ✓ |
| US TREASURY N/B | 0.002263 | ✓ |
| US TREASURY N/B | 0.002251 | ✓ |
| FN MA4437 | 0.002237 | ✓ |
| US TREASURY N/B | 0.002220 | ✓ |
| US TREASURY N/B | 0.002208 | ✓ |
| US TREASURY N/B | 0.002188 | ✓ |


## 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 `0001410368-26-039534` (as of 2026-02-28)
  <https://www.sec.gov/Archives/edgar/data/1100663/000141036826039534/0001410368-26-039534-index.htm>

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