ETF comparison
AGGvsIUSB
Both US Aggregate Bond.
iShares Core U.S. Aggregate Bond ETF · iShares Core Universal USD Bond ETF
Holdings overlap
11,356 positions appear in both funds. Buying equal dollars of AGG and IUSB would leave roughly70.3%of each dollar exposed to the same underlying securities.
Side by side
Sub-score comparison
Tracking quality isn't part of the composite — seewhat we don't scorefor why.
Cost difference
AGG 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 thecost calculator pre-filled with AGG vs IUSB.
Top shared holdings
11,356 shared in total| # | Holding | In AGG | In IUSB | Overlap |
|---|---|---|---|---|
| 1 | United States Treasury | 0.41% | 0.37% | 0.37% |
| 2 | United States Treasury | 0.38% | 0.37% | 0.37% |
| 3 | United States Treasury | 0.41% | 0.37% | 0.37% |
| 4 | United States Treasury | 0.40% | 0.37% | 0.37% |
| 5 | United States Treasury | 0.39% | 0.36% | 0.36% |
| 6 | United States Treasury | 0.39% | 0.36% | 0.36% |
| 7 | United States Treasury | 0.42% | 0.36% | 0.36% |
| 8 | United States Treasury | 0.40% | 0.35% | 0.35% |
| 9 | United States Treasury | 0.39% | 0.34% | 0.34% |
| 10 | United States Treasury | 0.39% | 0.33% | 0.33% |
| 11 | United States Treasury | 0.35% | 0.33% | 0.33% |
| 12 | United States Treasury | 0.31% | 0.32% | 0.31% |
Only in AGG
1,911 total- UMBS, TBA0.20%
- UMBS, TBA0.16%
- Government National Mortgage Association0.14%
- UMBS, TBA0.14%
- UMBS, TBA0.13%
- Government National Mortgage Association0.12%
- UMBS, TBA0.12%
- United States Treasury0.11%
- UMBS, TBA0.10%
- Government National Mortgage Association0.10%
Only in IUSB
6,423 total- Blackrock Liquidity Tempcash2.88%
- United States of America0.26%
- United States of America0.24%
- Federal National Mortgage Association or Federal Home Loan Mortgage Corp.0.22%
- Government National Mortgage Association0.21%
- Federal National Mortgage Association or Federal Home Loan Mortgage Corp.0.20%
- United States of America0.19%
- Federal National Mortgage Association or Federal Home Loan Mortgage Corp.0.19%
- Government National Mortgage Association0.18%
- Federal National Mortgage Association or Federal Home Loan Mortgage Corp.0.14%
Open AGG 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 methodologyand 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.