IWMWvsIWMETF Comparison
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iShares Russell 2000 BuyWrite ETF (IWMW) belongs to the Options Strategies segment. iShares Russell 2000 ETF (IWM) is part of the US Small Cap segment. Both ETFs have the same top 3 sector exposures: Finance, Healthcare and Technology. IWMW is more expensive with a Total Expense Ratio (TER) of 0.39%, versus 0.19% for IWM. IWMW is up 12.52% year-to-date (YTD) with +$24M in YTD flows. IWM performs better with 16.51% YTD performance, and -$5.87B in YTD flows. Run a side-by-side ETF comparison of IWMW 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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IWMW vs IWM performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/15/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWMW IWM | -4.35%-6.01% | +1.98%-2.95% | +12.52%+16.51% | +15.10%+20.66% | n/a+61.26% | n/a+36.82% |
| Flows | IWMW IWM | -$821K+$939M | +$7M-$427M | +$24M-$5.87B | +$31M-$3.40B | --$346M | --$3.26B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWMW IWM | +9.88%+13.77% | +12.37%+18.88% | n/a+21.24% | n/a+22.50% |
| Max drawdown | IWMW IWM | -4.38%-6.32% | -6.92%-11.03% | n/a-27.52% | n/a-31.96% |
| Max drawdown duration | IWMW IWM | 30d30d | 62d82d | n/a289d | n/a1093d |
Trading data
IWMW | IWM | |
Last sale 9/15/2026 at 7:59 PM | $38.25 | $285.26 |
| Previous close 09/15/2026 | $38.55 | $285.14 |
| Consolidated volume 09/15/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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IWMW | 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 9/15/2026 at 7:59 PM
Live
Closed
IWMW | IWM | |
|---|---|---|
| Last price | $38.25 | $285.26 |
| 1D performance | -0.78% | +0.04% |
| AuM | $57.47 M | $78.79 B |
| E/R | 0.39% | 0.19% |
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Exposure
Countries
IWMW
USA
96.06%
Other
3.94%
IWM
USA
95.53%
Other
4.47%
Sectors
IWMW
Finance
26.88%
Healthcare
20.29%
Technology
11.87%
Industrials
10.58%
Other
30.37%
IWM
Finance
26.78%
Healthcare
20.22%
Technology
11.82%
Industrials
10.54%
Other
30.64%
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Diversification
IWMW
Total weight of top 15 holdings out of 15
5.1%
IWM
Total weight of top 15 holdings out of 15
4.93%
Top 15 holdings
Data as of July 31, 2026
IWMW
BlackRock Cash Funds - Treasury
0.61%
Moog, Inc.
0.39%
BrightSpring Health Services, Inc.
0.38%
Hut 8 Corp.
0.36%
UMB Financial Corp.
0.35%
Cytokinetics, Inc.
0.34%
ViaSat, Inc.
0.32%
Glaukos Corp.
0.31%
Krystal Biotech, Inc.
0.31%
CareTrust REIT, Inc.
0.30%
Old National Bancorp
0.30%
Brinker International, Inc.
0.29%
Crinetics Pharmaceuticals, Inc.
0.28%
HealthEquity, Inc.
0.28%
JFrog Ltd.
0.28%
IWM
BlackRock Cash Funds - Treasury
0.46%
Moog, Inc.
0.39%
BrightSpring Health Services, Inc.
0.38%
Hut 8 Corp.
0.36%
UMB Financial Corp.
0.35%
Cytokinetics, Inc.
0.34%
ViaSat, Inc.
0.32%
Glaukos Corp.
0.31%
Krystal Biotech, Inc.
0.31%
CareTrust REIT, Inc.
0.30%
Old National Bancorp
0.30%
Brinker International, Inc.
0.29%
Crinetics Pharmaceuticals, Inc.
0.28%
HealthEquity, Inc.
0.28%
JFrog Ltd.
0.27%
Frequently asked questions about IWMW and IWM
How have the IWMW and IWM ETFs performed in 2026?
As of September 15, 2026, IWMW is up 12.52% year-to-date (YTD), while IWM has returned 16.51%. That puts IWM better performer ahead so far this year.
Which ETF is attracting more investor money: IWMW or IWM?
Year-to-date, the IWMW ETF saw +$24M in flows, compared to -$5.87B for IWM.
Which ETF is more volatile: IWMW or IWM?
Over the past year, IWMW had a volatility of 12.37%, while IWM experienced 18.88%.
Which ETF is bigger: IWMW or IWM?
As of September 15, 2026, IWMW holds $57.47 M in assets under management (AUM), while IWM manages $78.79 B.
What sectors do the IWMW and IWM ETFs invest in?
IWMW leans toward sectors like Finance, Healthcare and Technology. Meanwhile, IWM focuses on Finance, Healthcare and Technology.
What are the top holdings of the IWMW ETF and IWM ETF?
IWMW top holdings include BlackRock Cash Funds - Treasury, Moog, Inc. and BrightSpring Health Services, Inc.. IWM holds in its top three: BlackRock Cash Funds - Treasury, Moog, Inc. and BrightSpring Health Services, Inc..
Which ETF is more diversified: IWMW or IWM?
IWMW holds 1957 securities with 5.1% of its assets in the top 15. IWM has 1957 securities and a top 15 weight of 4.93%.
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Latest news about IWMW & IWM
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