Data as of Oct 28, 2026.

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IUSB vs IWC: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IUSB returned −1.2% to IWC's +16.5%; 0% of their weight is in the same names.

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Net assets on Oct 27, 2026: $49.8bn for iShares Core Universal USD Bond ETF and $1.2bn for iShares Micro-Cap ETF.

At a glance
−1.2%
IUSB total return, 1 year
+16.5%
IWC total return, 1 year
0.06%
IUSB expense ratio
0.60%
IWC expense ratio

Pair scorecard

IUSB costs 0.54 points a year less; their one-year returns differ by 17.7 points; IUSB is far larger, $49.8bn against $1.2bn.

IUSB vs IWC: Differences, Returns & Fees
MeasureIUSBIWC
Return
Total return, 1 year−1.2%+16.5%
Drawdown
Below its high9.5%, high on Aug 14, 2026
Benchmark
What it tracksBloomberg U.S. Universal IndexRussell Microcap Index
Cost and size
Expense ratio0.06%0.60%
Net assets, as of Oct 27, 2026$49.8bn$1.2bn
Holdings
Holdings in common0%
In the S&P 500, by weight92%
Top ten holdings, share of the fund5.9%

Holdings in common uses holdings dated Oct 27, 2026. Method

What they share

0%

By the books each fund has filed, IUSB and IWC hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first IUSB IWC
Only in one fund ↓
Only in IUSB
BLK Liquidity Temp Cash Inst #21 4.75%
TREASURY NOTE 0.49%
TREASURY NOTE 0.42%
TREASURY NOTE 0.41%
TREASURY NOTE 0.38%
TREASURY NOTE 0.37%
TREASURY NOTE (2OLD) 0.36%
UMBS 15YR TBA(REG B) 0.35%
Only in IWC
CAREDX 0.88%
PENGUIN SOLUTIONS INC 0.73%
NURIX THERAPEUTICS 0.63%
SELLAS LIFE SCIENCES GROUP INC 0.60%
VIRIDIAN THERAPEUTICS ORS 0.59%
OUSTER 0.53%
INTERFACE 0.52%
STRIVE INC CLASS A 0.50%
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Side by side

IUSB iShares Core Universal USD Bond ETF IWC iShares Micro-Cap ETF
Where it sits Bond ETF Stock ETF
What it is Tracks an index of Universal USD Bond Tracks the Russell Microcap
Total return, 1 year −1.2% +16.5%
Its benchmark over the same days not measured +13.3% (IWV)
Gap to its benchmark not measured +3.2 pts vs IWV
Expense ratio 0.06% 0.60%
Holdings 18338 1365
Net assets, as of Oct 27, 2026 $49.8bn $1.2bn

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

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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.

IWC

Over the year to Oct 28, 2026 it returned +16.5% with distributions reinvested, against +13.3% for its benchmark, the Russell 3000 Index.

IWC tracks the Russell Microcap. The prospectus expense ratio is 0.60% a year. By its holdings published by its issuer for Oct 27, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1,365 positions, with the top ten at 5.9%. It sat 9.5% below its high of Aug 14, 2026 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, IUSB or IWC?
In the year to Oct 28, 2026, with distributions reinvested, IUSB returned −1.2% and IWC +16.5%.
Which is cheaper, IUSB or IWC?
IUSB is cheaper, by 0.54 percentage points a year. That is about $54 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, IUSB against IWC, data as of Oct 28, 2026. https://etfiq.com/compare/any/iusb-vs-iwc

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