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Data as of Oct 28, 2026.

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IWB vs IWC: Differences, Returns & Fees

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Over the year to Oct 28, 2026, IWB returned +13.1% to IWC's +16.5%; 0% of their weight is in the same names.

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Net assets: $49.1bn on Oct 28, 2026 for iShares Russell 1000 ETF, and $1.2bn on Oct 27, 2026 for iShares Micro-Cap ETF.

IWB on its own →IWC on its own →
At a glance
+13.1%
IWB total return, 1 year
+16.5%
IWC total return, 1 year
0.15%
IWB expense ratio
0.60%
IWC expense ratio

Pair scorecard

IWB costs 0.45 points a year less; their one-year returns differ by 3.4 points; IWB is far larger, $48.7bn against $1.2bn.

IWB vs IWC: Differences, Returns & Fees
MeasureIWBIWC
Return
Total return, 1 year+13.1%+16.5%
Drawdown
Below its high9.5%, high on Aug 14, 2026
Benchmark
What it tracksRussell 1000 IndexRussell Microcap Index
Cost and size
Expense ratio0.15%0.60%
Net assets, as of Oct 26, 2026$48.7bn$1.2bn
Holdings
Holdings in common0%
Top ten holdings, share of the fund35.3%5.9%

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

What they share

0%

By the books each fund has filed, IWB 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 IWB IWC
Only in one fund ↓
Only in IWB
NVIDIA 7.15%
APPLE 7.06%
MICROSOFT 5.56%
AMAZON.COM INC 3.46%
ALPHABET CLASS A 2.63%
BROADCOM INC 2.24%
ALPHABET CLASS C 2.12%
META PLATFORMS CLASS A 1.92%
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%
Check overlap with more funds →

Side by side

IWB iShares Russell 1000 ETF IWC iShares Micro-Cap ETF
Where it sits Stock ETF Stock ETF
Issuer iShares iShares
What it is Tracks the Russell 1000 Tracks the Russell Microcap
Total return, 1 year +13.1% +16.5%
Its benchmark over the same days +13.2% (VONE) +13.3% (IWV)
Gap to its benchmark −0.1 pts vs VONE +3.2 pts vs IWV
Expense ratio 0.15% 0.60%
Already in the S&P 500 91.7% 91.7%
Holdings 1025 1365
Net assets, IWB as of Oct 28, 2026 and IWC as of Oct 27, 2026 $49.1bn $1.2bn

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

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About each fund
IWB

IWB tracks the Russell 1000. Over the year to Oct 28, 2026 it returned +13.1% with distributions reinvested, against +13.2% for its benchmark, the Russell 1000 Index. The prospectus expense ratio is 0.15% 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 1,025 positions, with the top ten at 35.3%.

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, IWB or IWC?
In the year to Oct 28, 2026, with distributions reinvested, IWB returned +13.1% and IWC +16.5%.
Which is cheaper, IWB or IWC?
IWB is cheaper, by 0.45 percentage points a year. That is about $45 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IWB and IWC overlap with the S&P 500?
By their latest filed holdings, 92% of IWB and 92% of IWC by weight is stocks the S&P 500 already holds.
Other comparisons
IWB vs VTWOIWB vs IWMIWB vs VBIJR vs IWBIWC vs USMVIWC vs QUALIWC vs SCHBIWC vs SCHX
Where to next
IWB on its own →IWC on its own →Hold both: look the portfolio through →Rankings →IWB dividend history →IWB holdings →IWC dividend history →IWC holdings →Standards and sources →
Sources and dates
IWB and IWC filings on SEC EDGAR ↗
IWB and IWC prospectus with the expense ratio (SEC) ↗
iShares page for IWB ↗
iShares page for IWC ↗

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.

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ETFIQ, IWB against IWC, data as of Oct 28, 2026. https://etfiq.com/compare/any/iwb-vs-iwc

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.