Data as of Oct 28, 2026.

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IUSB vs USFR: Differences, Returns & Fees

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IUSB's duration was 5.5 years on Jul 31, 2026 and USFR's 0.0 on May 31, 2026; IUSB charges 0.06% to USFR's 0.15%.

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Net assets: $49.8bn on Oct 27, 2026 for iShares Core Universal USD Bond ETF, and $17.0bn on May 31, 2026 for WisdomTree Floating Rate Treasury Fund.

At a glance
−1.2%
IUSB total return, 1 year
+4.1%
USFR total return, 1 year
0.06%
IUSB expense ratio
0.15%
USFR expense ratio

Pair scorecard

IUSB costs 0.09 points a year less; their one-year returns differ by 5.3 points.

IUSB vs USFR: Differences, Returns & Fees
MeasureIUSBUSFR
Return
Total return, 1 year−1.2%+4.1%
Benchmark
What it tracksBloomberg U.S. Universal IndexBloomberg U.S. Treasury Floating Rate Bond Index
Cost and size
Expense ratio0.06%0.15%
Net assets, IUSB as of Oct 27, 2026 and USFR as of May 31, 2026$49.8bn$17.0bn
Holdings
Holdings in common0%

Holdings in common uses holdings dated May 31, 2026 and Jul 31, 2026. Method

Risk and return

Jun 20, 2014 to Oct 23, 2026 · 644 weekly returns
IUSB USFR
Return
Total return edge USFR (slight) +28.3% +29.2%
Annualized edge USFR (slight) +2.0% +2.1%
Price return edge USFR −10.7% +1.2%
Risk
Volatility edge USFR 5.0% 0.9%
Max drawdown edge USFR −17.7% −1.4%
Risk-adjusted
Sharpe edge USFR (slight) 0.02 0.02
Sortino edge USFR (slight) 0.02 0.02
Calmar edge USFR 0.11 1.54
Reading

USFR returned slightly more: +29.2% to +28.3%. USFR swung less: 0.9% to 5.0%. USFR fell less at its worst: −1.4% to −17.7%.

Full scorecard

9 measures, with how each is measured
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Risk and return: IUSB vs USFR: Differences, Returns & Fees
MeasureIUSBUSFREdgeHow it is measured
Return
Total return+28.3%+29.2%USFR (slight)Price change plus distributions, reinvested.
Annualized+2.0%+2.1%USFR (slight)Total return as a yearly rate.
Price return−10.7%+1.2%USFRPrice change alone, distributions left out.
Risk
Volatility5.0%0.9%USFRSpread of weekly returns, annualized. Lower is steadier.
Downside deviation3.6%0.6%USFRLike volatility, counting only weeks below the Treasury bill rate.
Max drawdown−17.7%−1.4%USFRDeepest fall from a high to the low after it.
Risk-adjusted
Sharpe0.020.02USFR (slight)Return above Treasury bills per unit of volatility.
Sortino0.020.02USFR (slight)Return above Treasury bills per unit of downside deviation.
Calmar0.111.54USFRAnnualized 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

0%

By the books each fund has filed, IUSB and USFR hold 0% of their money in the same securities at the same weight. Holdings dated May 31, 2026 and Jul 31, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first IUSB USFR
Only in one fund ↓
Only in IUSB
Uniform Mortgage-Backed Securities, due Aug 25, 2056 0.41%
U.S. Treasury Notes, due Dec 31, 2029 0.37%
U.S. Treasury Notes, due May 15, 2036 0.37%
U.S. Treasury Notes, due Feb 15, 2034 0.36%
U.S. Treasury Notes, due Feb 15, 2035 0.35%
U.S. Treasury Notes, due Aug 15, 2035 0.34%
U.S. Treasury Notes, due May 15, 2034 0.34%
U.S. Treasury Notes, due Nov 15, 2034 0.34%
Only in USFR
TF 0 10/31/27, due Oct 31, 2027 27.95%
TF 0 07/31/27, due Jul 31, 2027 27.93%
TF 0 01/31/28, due Jan 31, 2028 27.91%
TF 0 04/30/28, due Apr 30, 2028 15.90%
Check overlap with more funds →

Side by side

IUSB iShares Core Universal USD Bond ETF USFR WisdomTree Floating Rate Treasury Fund
Where it sits Bond ETF Bond ETF
What it is Tracks an index of Universal USD Bond Tracks an index of Floating Rate Treasury
Total return, 1 year −1.2% +4.1%
Its benchmark over the same days not measured +4.0% (TFLO)
Gap to its benchmark not measured +0.1 pts vs TFLO
Expense ratio 0.06% 0.15%
Holdings 18338 4
Net assets, IUSB as of Oct 27, 2026 and USFR as of May 31, 2026 $49.8bn $17.0bn

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

Client brief · page 1 of 2 Report BR-581BF6AAD1

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

  1. What each follows. IUSB follows Bloomberg U.S. Universal Index and USFR follows Bloomberg U.S. Treasury Floating Rate Bond Index.
  2. Holdings in common. 0% of the weight is in the same securities (holdings dated Jul 31, 2026 and May 31, 2026).
  3. One-year total return. Over 1 year to Oct 28, 2026 IUSB returned −1.2% and USFR +4.1% with distributions reinvested, a gap of 5.3 points.

Data as of Oct 28, 2026.

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About each fund
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.

USFR

USFR tracks an index of Floating Rate Treasury. Over the year to Oct 28, 2026 it returned +4.1% with distributions reinvested, against +4.0% for its benchmark, the Bloomberg U.S. Treasury Floating Rate Bond Index. The prospectus expense ratio is 0.15% a year.

Questions people ask

Which returned more over the last year, IUSB or USFR?
In the year to Oct 28, 2026, with distributions reinvested, IUSB returned −1.2% and USFR +4.1%.
Which is cheaper, IUSB or USFR?
IUSB is cheaper, by 0.09 percentage points a year. That is about $9 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, IUSB against USFR, data as of Oct 28, 2026. https://etfiq.com/compare/any/iusb-vs-usfr

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