ETF comparison
IUSB vs TLT
US Aggregate Bond vs US Treasury (Long).
iShares Core Universal USD Bond ETF · iShares 20+ Year Treasury Bond ETF
Holdings overlap
46 positions appear in both funds. Buying equal dollars of IUSB and TLT would leave roughly 4.1% 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 9 bps cheaper than TLT. On a $100,000 position that's about $90/yr more in fees for TLT.
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 TLT.
Top shared holdings
46 shared in total| # | Holding | In IUSB | In TLT | Overlap |
|---|---|---|---|---|
| 1 | United States of America | 0.17% | 3.62% | 0.17% |
| 2 | United States of America | 0.17% | 4.46% | 0.17% |
| 3 | United States of America | 0.16% | 4.50% | 0.16% |
| 4 | United States of America | 0.16% | 2.90% | 0.16% |
| 5 | United States of America | 0.16% | 3.95% | 0.16% |
| 6 | United States of America | 0.16% | 2.97% | 0.16% |
| 7 | United States of America | 0.16% | 4.40% | 0.16% |
| 8 | United States of America | 0.15% | 3.46% | 0.15% |
| 9 | United States of America | 0.15% | 1.03% | 0.15% |
| 10 | United States of America | 0.15% | 3.80% | 0.15% |
| 11 | United States of America | 0.15% | 2.54% | 0.15% |
| 12 | United States of America | 0.15% | 4.15% | 0.15% |
Only in IUSB
17,998 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 TLT
0 totalEvery TLT position is also held by IUSB.
Related comparisons
More comparisons with IUSB
- IUSB vs BINC · iShares Flexible Income Active ETF 3.7%
- IUSB vs SPMB · State Street SPDR Portfolio Mortgage Backed Bond ETF 3.6%
- IUSB vs BOND · PIMCO Active Bond Exchange-Traded Fund 3.2%
- IUSB vs PYLD · PIMCO ETF Trust - PIMCO Multisector Bond Active Exchange-Traded Fund 1.8%
- IUSB vs VUSB · Vanguard Ultra-Short Bond ETF 1.7%
- IUSB vs JPST · JPMorgan Ultra-Short Income ETF 1.1%
More comparisons with TLT
- TLT vs VCRB · Vanguard Core Bond ETF 4.0%
- TLT vs JCPB · JPMorgan Core Plus Bond ETF 3.3%
- TLT vs CGCP · Capital Group Core Plus Income ETF 2.5%
- TLT vs CORP · PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund 1.8%
- TLT vs PYLD · PIMCO ETF Trust - PIMCO Multisector Bond Active Exchange-Traded Fund 0.6%
- TLT vs AGGY · WisdomTree Yield Enhanced U.S. Aggregate Bond Fund 0.6%
Percentages are holdings overlap with the named fund.
Open IUSB or TLT 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.