ETF comparison
BLV vs IUSB
Both US Aggregate Bond.
Vanguard Long-Term Bond Index Fund ETF Shares · iShares Core Universal USD Bond ETF
Holdings overlap
2,906 positions appear in both funds. Buying equal dollars of BLV and IUSB would leave roughly 14.3% of each dollar exposed to the same underlying securities.
Unmatched is the part of a fund's weight the other fund doesn't match: names only it holds, plus any extra weight it puts in names both funds hold.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — see what we don't score for why.
Cost difference
BLV is 3 bps cheaper than IUSB. On a $100,000 position that's about $30/yr more in fees for IUSB.
Fee figure is the annual expense charged on $100,000. To see how the gap compounds over a multi-decade holding period, open the cost calculator pre-filled with BLV vs IUSB.
Top shared holdings
2,906 shared in total| # | Holding | In BLV | In IUSB | Overlap |
|---|---|---|---|---|
| 1 | United States Treasury Note/Bond | 0.24% | 0.37% | 0.24% |
| 2 | United States Treasury Note/Bond | 0.86% | 0.17% | 0.17% |
| 3 | United States Treasury Note/Bond | 1.15% | 0.17% | 0.17% |
| 4 | United States Treasury Note/Bond | 1.10% | 0.16% | 0.16% |
| 5 | United States Treasury Note/Bond | 1.17% | 0.16% | 0.16% |
| 6 | United States Treasury Note/Bond | 0.97% | 0.16% | 0.16% |
| 7 | United States Treasury Note/Bond | 0.85% | 0.16% | 0.16% |
| 8 | United States Treasury Note/Bond | 0.77% | 0.16% | 0.16% |
| 9 | United States Treasury Note/Bond | 0.80% | 0.16% | 0.16% |
| 10 | United States Treasury Note/Bond | 1.13% | 0.16% | 0.16% |
| 11 | United States Treasury Note/Bond | 1.14% | 0.15% | 0.15% |
| 12 | United States Treasury Note/Bond | 0.70% | 0.15% | 0.15% |
Only in BLV
77 total- United States Treasury Note/Bond 0.17%
- United States Treasury Note/Bond 0.07%
- Federal National Mortgage Association 0.04%
- Tennessee Valley Authority 0.03%
- BlackRock Funding Inc 0.03%
- FedEx Corp 0.02%
- FedEx Corp 0.02%
- Shell Finance US Inc 0.02%
- Shell Finance US Inc 0.02%
- BlackRock Funding Inc 0.02%
Only in IUSB
15,138 total- Federal National Mortgage Association or Federal Home Loan Mortgage Corp. 0.41%
- United States of America 0.37%
- United States of America 0.36%
- United States of America 0.35%
- United States of America 0.34%
- United States of America 0.34%
- United States of America 0.34%
- United States of America 0.33%
- United States of America 0.33%
- United States of America 0.33%
Related comparisons
More comparisons with BLV
- BLV vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 14.3%
- BLV vs FBND · Fidelity Total Bond ETF 12.5%
- BLV vs VCRB · Vanguard Core Bond ETF 12.1%
- BLV vs DFCF · Dimensional Core Fixed Income ETF 7.7%
- BLV vs JCPB · JPMorgan Core Plus Bond ETF 7.4%
- BLV vs CGCP · Capital Group Core Plus Income ETF 7.2%
More comparisons with IUSB
- IUSB vs VGSH · Vanguard Short-Term Treasury Index Fund ETF Shares 12.5%
- IUSB vs SHY · iShares 1-3 Year Treasury Bond ETF 12.4%
- IUSB vs MBB · iShares MBS ETF 9.0%
- IUSB vs VGLT · Vanguard Long-Term Treasury Index Fund ETF Shares 7.5%
- IUSB vs CGCP · Capital Group Core Plus Income ETF 7.3%
- IUSB vs JCPB · JPMorgan Core Plus Bond ETF 7.2%
Percentages are holdings overlap with the named fund.
Open BLV or IUSB at a brokerage
Both funds trade commission-free at major US brokerages.
Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodology and funding disclosure.
Holdings overlap is the sum of min(weight_a, weight_b) over positions
matched on ISIN (CUSIP fallback). Methodology: see
/methodology/.
Comparing two funds doesn't endorse swapping one for the other. Tax-lot history, account type, and personal goals matter — PlainIndex publishes data and methodology, not investment advice.