Data as of Oct 28, 2026.
AGG vs IUSB: Differences, Returns & Fees
AGG's duration was 5.8 years on Aug 31, 2026 and IUSB's 5.5 on Jul 31, 2026; AGG charges 0.03% to IUSB's 0.06%.
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askIQ about AGG and IUSBNet assets on Oct 27, 2026: $139.4bn for iShares Core U.S. Aggregate Bond ETF and $49.8bn for iShares Core Universal USD Bond ETF.
Pair scorecard
AGG costs 0.03 points a year less; their one-year returns differ by 0.2 points; AGG is 2.8 times larger.
| Measure | AGG | IUSB |
|---|---|---|
| Return | ||
| Total return, 1 year | −1.4% | −1.2% |
| Drawdown | ||
| Below its high | 3.4%, high on Aug 4, 2020 | |
| Benchmark | ||
| What it tracks | Bloomberg U.S. Aggregate Bond Index | Bloomberg U.S. Universal Index |
| Cost and size | ||
| Expense ratio | 0.03% | 0.06% |
| Net assets, as of Oct 27, 2026 | $139.4bn | $49.8bn |
| Holdings | ||
| Holdings in common | 69% | |
Holdings in common uses holdings dated Jul 31, 2026 and Aug 31, 2026. Method
Risk and return
Jun 20, 2014 to Oct 23, 2026 · 644 weekly returnsIUSB returned more: +28.3% to +23.8%. AGG and IUSB swung about the same: 4.9% and 5.0%. IUSB fell slightly less at its worst: −17.7% to −18.2%.
Full scorecard
9 measures, with how each is measured Open ↓
| Measure | AGG | IUSB | Edge | How it is measured |
|---|---|---|---|---|
| Return | ||||
| Total return | +23.8% | +28.3% | IUSB | Price change plus distributions, reinvested. |
| Annualized | +1.7% | +2.0% | IUSB | Total return as a yearly rate. |
| Price return | −11.9% | −10.7% | IUSB | Price change alone, distributions left out. |
| Risk | ||||
| Volatility | 4.9% | 5.0% | Tie | Spread of weekly returns, annualized. Lower is steadier. |
| Downside deviation | 3.6% | 3.6% | AGG (slight) | Like volatility, counting only weeks below the Treasury bill rate. |
| Max drawdown | −18.2% | −17.7% | IUSB (slight) | Deepest fall from a high to the low after it. |
| Risk-adjusted | ||||
| Sharpe | −0.04 | 0.02 | IUSB | Return above Treasury bills per unit of volatility. |
| Sortino | −0.06 | 0.02 | IUSB | Return above Treasury bills per unit of downside deviation. |
| Calmar | 0.10 | 0.11 | IUSB | Annualized return divided by the max drawdown. |
Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 644 weekly returns. Cash rate: the 13-week Treasury bill.
What they share
By the books each fund has filed, AGG and IUSB hold 69% of their money in the same securities at the same weight. Holdings dated Jul 31, 2026 and Aug 31, 2026.
half
69% in common
Only in one fund ↓
Side by side
AGG and IUSB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.
AGG and IUSB do different jobs. What does each one do in a portfolio?
- What each follows. AGG follows Bloomberg U.S. Aggregate Bond Index and IUSB follows Bloomberg U.S. Universal Index.
- Holdings in common (similar). 69% of the weight is in the same securities (holdings dated Aug 31, 2026 and Jul 31, 2026).
- One-year total return (similar). Over 1 year to Oct 28, 2026 AGG returned −1.4% and IUSB −1.2% with distributions reinvested, a gap of 0.2 points.
Data as of Oct 28, 2026.
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AGG
AGG tracks an index of US aggregate bonds. Over the year to Oct 28, 2026 it returned −1.4% with distributions reinvested, against −1.3% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.03% a year. It sat 3.4% below its high of Aug 4, 2020 on Oct 28, 2026.
IUSB
IUSB tracks an index of Universal USD Bond. Over the year to Oct 28, 2026 it returned −1.2% with distributions reinvested. The prospectus expense ratio is 0.06% a year.
Questions people ask
- Which returned more over the last year, AGG or IUSB?
- In the year to Oct 28, 2026, with distributions reinvested, AGG returned −1.4% and IUSB −1.2%.
- Which is cheaper, AGG or IUSB?
- AGG is cheaper, by 0.03 percentage points a year. That is about $3 on $10,000 held for a year. Fees come from each fund's prospectus.
Links are sources, not endorsements. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
Cite this pageCitation, APA and Markdown
ETFIQ, AGG against IUSB, data as of Oct 28, 2026. https://etfiq.com/compare/any/agg-vs-iusb
ETFIQ. (Oct 28, 2026). AGG against IUSB. Retrieved from https://etfiq.com/compare/any/agg-vs-iusb
[AGG against IUSB (ETFIQ, Oct 28, 2026)](https://etfiq.com/compare/any/agg-vs-iusb)
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