IWCvsIWMETF Comparison
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iShares Micro-Cap ETF (IWC) and iShares Russell 2000 ETF (IWM) belong to the same industry segment: US Small Cap. IWC's top 3 sector exposures are Health Care, Financials and Information Technology. In contrast, IWM's top sector exposures are Industrials, Health Care and Financials. IWC is more expensive with a Total Expense Ratio (TER) of 0.6%, versus 0.19% for IWM. IWC is up 3.22% year-to-date (YTD) with +$111M in YTD flows. IWM performs worse with 2.23% YTD performance, and -$3.47B in YTD flows. Run a side-by-side ETF comparison of IWC and IWM below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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IWC vs IWM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 04/02/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWC IWM | -4.41%-4.60% | +2.73%+1.16% | +3.22%+2.23% | +46.28%+25.19% | +61.10%+45.84% | +14.79%+18.87% |
| Flows | IWC IWM | -$15M+$850M | +$111M-$3.47B | +$111M-$3.47B | +$98M-$6.24B | -$52M+$1.95B | -$166M-$4.41B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWC IWM | +27.13%+21.51% | +26.55%+23.37% | +24.10%+21.24% | +24.48%+22.60% |
| Max drawdown | IWC IWM | -12.28%-11.03% | -13.20%-13.89% | -29.17%-27.52% | -40.56%-31.96% |
| Max drawdown duration | IWC IWM | 70d70d | 29d37d | 233d289d | 1562d1093d |
Trading data
IWC | IWM | |
Last sale 4/2/2026 at 1:30 PM | $162.65 | $251.29 |
| Previous close 04/02/2026 | $160.59 | $249.56 |
| Consolidated volume 04/02/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of March 31, 2026
1-year trailing difference
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IWC | IWM | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 4/2/2026 at 1:30 PM
Live
Closed
IWC | IWM | |
|---|---|---|
| Last price | $162.65 | $251.29 |
| 1D performance | +1.28% | +0.69% |
| AuM | $1.23 B | $71.89 B |
| E/R | 0.6% | 0.19% |
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Exposure
Countries
IWC
USA
93.1%
Other
6.9%
IWM
USA
92.08%
Other
7.92%
Sectors
IWC
Health Care
20.7%
Financials
16.85%
Information Techn.
15.24%
Industrials
10.75%
Other
36.45%
IWM
Industrials
16.09%
Health Care
15.03%
Financials
14.37%
Information Techn.
14.24%
Consumer Discreti.
8.85%
Other
31.43%
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Diversification
IWC
Total weight of top 15 holdings out of 15
13.59%
IWM
Total weight of top 15 holdings out of 15
7.65%
Top 15 holdings
Data as of February 28, 2026
IWC
US74006W2070
1.69%
APPLIED BLOCKCHAIN
1.33%
COGENT BIOSCIENCES
1.10%
APPLIED OPTOEL/D
1.04%
CIPHER MINING INC
1.04%
TERAWULF INC
1.01%
ENERGY FUELS
1.00%
COMMSCOPE HOLDING
0.78%
TERNS PHARMACEUTICALS
0.74%
CELCUITY INC
0.74%
CENTRUS ENERGY CORP
0.70%
TUTOR PERINI
0.69%
PERPETUA RESOURCES CORP
0.64%
US44862P2083
0.57%
NLIGHT INC
0.53%
IWM
BLOOM ENERGY CORP
1.11%
FABRINET
0.64%
COEUR MINING INC
0.57%
CREDO TECHNOLOGY GROUP HOLDING
0.56%
HECLA MINING
0.52%
ECHOSTAR
0.51%
US65290E1010
0.50%
KRATOS DEFENSE AND SECURITY SOLS
0.47%
IONQ
0.42%
STERLING INFRASTRUCTURE INC
0.42%
ADVANCED ENERGY INDUSTRIES
0.41%
ENSIGN GROUP
0.39%
MODINE MNFC CO
0.39%
DYCOM INDUSTRIES
0.38%
GUARDANT HEALTH INC
0.37%
Frequently asked questions about IWC and IWM
How have the IWC and IWM ETFs performed in 2026?
As of April 2, 2026, IWC is up 3.22% year-to-date (YTD), while IWM has returned 2.23%. That puts IWC better performer ahead so far this year.
Which ETF is attracting more investor money: IWC or IWM?
Year-to-date, the IWC ETF saw +$111M in flows, compared to -$3.47B for IWM.
Which ETF is more volatile: IWC or IWM?
Over the past year, IWC had a volatility of 26.55%, while IWM experienced 23.37%.
Which ETF is bigger: IWC or IWM?
As of April 2, 2026, IWC holds $1.23 B in assets under management (AUM), while IWM manages $71.89 B.
What sectors do the IWC and IWM ETFs invest in?
IWC leans toward sectors like Health Care, Financials and Information Technology. Meanwhile, IWM focuses on Industrials, Health Care and Financials.
What are the top holdings of the IWC ETF and IWM ETF?
IWC top holdings include US74006W2070, APPLIED BLOCKCHAIN and COGENT BIOSCIENCES. IWM holds in its top three: BLOOM ENERGY CORP, FABRINET and COEUR MINING INC.
Which ETF is more diversified: IWC or IWM?
IWC holds 1298 securities with 13.59% of its assets in the top 15. IWM has 1930 securities and a top 15 weight of 7.65%.
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