ETF comparison
IUSB vs VUSB
Both US Aggregate Bond.
iShares Core Universal USD Bond ETF · Vanguard Ultra-Short Bond ETF
Holdings overlap
448 positions appear in both funds. Buying equal dollars of IUSB and VUSB would leave roughly 1.7% 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
IUSB is 4 bps cheaper than VUSB. On a $100,000 position that's about $40/yr more in fees for VUSB.
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 IUSB vs VUSB.
Top shared holdings
448 shared in total| # | Holding | In IUSB | In VUSB | Overlap |
|---|---|---|---|---|
| 1 | United States of America | 0.19% | 0.52% | 0.19% |
| 2 | United States of America | 0.12% | 0.67% | 0.12% |
| 3 | Bank of America Corp. | 0.02% | 0.19% | 0.02% |
| 4 | Goldman Sachs Group, Inc. (The) | 0.02% | 0.35% | 0.02% |
| 5 | Wells Fargo & Co. | 0.02% | 0.20% | 0.02% |
| 6 | Synchrony Card Funding LLC | 0.01% | 0.11% | 0.01% |
| 7 | Cigna Group (The) | 0.01% | 0.07% | 0.01% |
| 8 | Goldman Sachs Group, Inc. (The) | 0.01% | 0.22% | 0.01% |
| 9 | Goldman Sachs Group, Inc. (The) | 0.01% | 0.28% | 0.01% |
| 10 | Bank of America Corp. | 0.01% | 0.15% | 0.01% |
| 11 | Bank of America Corp. | 0.01% | 0.37% | 0.01% |
| 12 | US Bank NA | 0.01% | 0.13% | 0.01% |
Only in IUSB
17,596 total- Federal National Mortgage Association or Federal Home Loan Mortgage Corp. 0.41%
- United States of America 0.37%
- 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%
Only in VUSB
833 total- United States Treasury Bill 4.19%
- Charles Schwab Corp/The 0.49%
- Westlake Flooring Master Trust 0.44%
- DLLAD 2024-1 LLC 0.43%
- UBS Group AG 0.41%
- Bank of Montreal 0.40%
- Toyota Motor Credit Corp 0.37%
- RKTL 2026-2 0.37%
- PFS Financing Corp 0.36%
- American Honda Finance Corp 0.34%
Related comparisons
More comparisons with IUSB
- IUSB vs JPST · JPMorgan Ultra-Short Income ETF 1.1%
- IUSB vs ICSH · iShares Ultra Short Duration Bond Active ETF 0.7%
- IUSB vs PULS · PGIM Ultra Short Bond ETF 0.5%
- IUSB vs MINT · PIMCO Enhanced Short Maturity Active Exchange-Traded Fund 0.3%
- IUSB vs FLOT · iShares Floating Rate Bond ETF 0.0%
- IUSB vs BNDX · Vanguard Total International Bond Index Fund ETF Shares 0.0%
More comparisons with VUSB
- VUSB vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 1.6%
- VUSB vs VGSH · Vanguard Short-Term Treasury Index Fund ETF Shares 1.2%
- VUSB vs FBND · Fidelity Total Bond ETF 0.9%
- VUSB vs BOND · PIMCO Active Bond Exchange-Traded Fund 0.7%
- VUSB vs JCPB · JPMorgan Core Plus Bond ETF 0.6%
- VUSB vs SHY · iShares 1-3 Year Treasury Bond ETF 0.5%
Percentages are holdings overlap with the named fund.
Open IUSB or VUSB 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.