Data as of Oct 28, 2026.

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AGG vs IUSB: Differences, Returns & Fees

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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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Net 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.

At a glance
−1.4%
AGG total return, 1 year
−1.2%
IUSB total return, 1 year
0.03%
AGG expense ratio
0.06%
IUSB expense ratio

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.

AGG vs IUSB: Differences, Returns & Fees
MeasureAGGIUSB
Return
Total return, 1 year−1.4%−1.2%
Drawdown
Below its high3.4%, high on Aug 4, 2020
Benchmark
What it tracksBloomberg U.S. Aggregate Bond IndexBloomberg U.S. Universal Index
Cost and size
Expense ratio0.03%0.06%
Net assets, as of Oct 27, 2026$139.4bn$49.8bn
Holdings
Holdings in common69%

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 returns
AGG IUSB
Return
Total return edge IUSB +23.8% +28.3%
Annualized edge IUSB +1.7% +2.0%
Price return edge IUSB −11.9% −10.7%
Risk
Volatility edge Tie 4.9% 5.0%
Max drawdown edge IUSB (slight) −18.2% −17.7%
Risk-adjusted
Sharpe edge IUSB −0.04 0.02
Sortino edge IUSB −0.06 0.02
Calmar edge IUSB 0.10 0.11
Reading

IUSB 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
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Risk and return: AGG vs IUSB: Differences, Returns & Fees
MeasureAGGIUSBEdgeHow it is measured
Return
Total return+23.8%+28.3%IUSBPrice change plus distributions, reinvested.
Annualized+1.7%+2.0%IUSBTotal return as a yearly rate.
Price return−11.9%−10.7%IUSBPrice change alone, distributions left out.
Risk
Volatility4.9%5.0%TieSpread of weekly returns, annualized. Lower is steadier.
Downside deviation3.6%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−0.040.02IUSBReturn above Treasury bills per unit of volatility.
Sortino−0.060.02IUSBReturn above Treasury bills per unit of downside deviation.
Calmar0.100.11IUSBAnnualized 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

69%

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.

0 half 100%

half

69% in common

Positions both hold · largest shared weight first AGG IUSB
U.S. Treasury Notes, due May 15, 2036 0.37% 0.37%
U.S. Treasury Notes, due Feb 15, 2034 0.37% 0.36%
U.S. Treasury Notes, due Feb 15, 2035 0.41% 0.35%
U.S. Treasury Notes, due Aug 15, 2035 0.38% 0.34%
U.S. Treasury Notes, due May 15, 2034 0.40% 0.34%
U.S. Treasury Notes, due Nov 15, 2034 0.40% 0.34%
U.S. Treasury Notes, due May 15, 2035 0.39% 0.33%
U.S. Treasury Notes, due Feb 15, 2036 0.39% 0.33%
U.S. Treasury Notes, due Aug 15, 2034 0.39% 0.33%
U.S. Treasury Notes, due Nov 15, 2035 0.37% 0.32%
U.S. Treasury Notes, due Feb 28, 2030 0.40% 0.31%
U.S. Treasury Notes, due Jun 15, 2028 0.36% 0.30%
Only in one fund ↓
Only in AGG
Ginnie Mae, due Sep 1, 2056 0.20%
Uniform Mortgage-Backed Security, TBA, due Sep 1, 2056 0.17%
Ginnie Mae, due Sep 1, 2056 0.16%
Uniform Mortgage-Backed Security, TBA, due Sep 1, 2041 0.15%
Uniform Mortgage-Backed Security, TBA, due Sep 1, 2056 0.15%
Ginnie Mae, due Sep 1, 2056 0.15%
Uniform Mortgage-Backed Security, TBA, due Sep 1, 2056 0.13%
Uniform Mortgage-Backed Security, TBA, due Sep 1, 2041 0.12%
Only in IUSB
Uniform Mortgage-Backed Securities, due Aug 25, 2056 0.41%
Uniform Mortgage-Backed Securities, due Aug 25, 2056 0.31%
Uniform Mortgage-Backed Securities, due Aug 25, 2056 0.30%
Uniform Mortgage-Backed Securities, due Aug 25, 2041 0.26%
Uniform Mortgage-Backed Securities, due Aug 25, 2056 0.22%
Government National Mortgage Association, due Aug 15, 2056 0.19%
Government National Mortgage Association, due Aug 15, 2056 0.18%
Uniform Mortgage-Backed Securities, due Aug 25, 2056 0.16%
Check overlap with more funds →

Side by side

AGG iShares Core U.S. Aggregate Bond ETF IUSB iShares Core Universal USD Bond ETF
Where it sits Bond ETF Bond ETF
What it is Tracks an index of US aggregate bonds Tracks an index of Universal USD Bond
Total return, 1 year −1.4% −1.2%
Its benchmark over the same days −1.3% (SCHZ) not measured
Gap to its benchmark −0.1 pts vs SCHZ not measured
Expense ratio 0.03% 0.06%
Holdings 13469 18338
Net assets, as of Oct 27, 2026 $139.4bn $49.8bn

AGG and IUSB on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

Client brief · page 1 of 2 Report BR-18F0F765C2

AGG and IUSB do different jobs. What does each one do in a portfolio?

  1. What each follows. AGG follows Bloomberg U.S. Aggregate Bond Index and IUSB follows Bloomberg U.S. Universal Index.
  2. Holdings in common (similar). 69% of the weight is in the same securities (holdings dated Aug 31, 2026 and Jul 31, 2026).
  3. 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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About each fund
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.
Other comparisons
Cite this pageCitation, APA and Markdown

ETFIQ, AGG against IUSB, data as of Oct 28, 2026. https://etfiq.com/compare/any/agg-vs-iusb

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