IWOvsJSMLETF Comparison
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iShares Russell 2000 Growth ETF (IWO) and Janus Henderson Small Cap Growth Alpha ETF (JSML) belong to the same industry segment: US Small Cap Growth. IWO's top 3 sector exposures are Healthcare, Technology and Industrials. In contrast, JSML's top sector exposures are Healthcare, Technology and Finance. IWO is less expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.3% for JSML. IWO is up 13.91% year-to-date (YTD) with -$570M in YTD flows. JSML performs better with 18.12% YTD performance, and +$55M in YTD flows. Run a side-by-side ETF comparison of IWO and JSML 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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IWO vs JSML performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/11/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWO JSML | -5.53%-4.46% | -2.69%-1.93% | +13.91%+18.12% | +16.94%+15.64% | +59.50%+69.53% | +26.01%+32.14% |
| Flows | IWO JSML | +$308M+$105K | +$183M+$21M | -$570M+$55M | -$383M+$92M | -$720M+$112M | -$337M+$143M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWO JSML | +18.92%+18.24% | +22.37%+22.21% | +22.97%+22.06% | +24.72%+24.34% |
| Max drawdown | IWO JSML | -7.65%-8.05% | -14.82%-14.79% | -28.47%-25.88% | -40.45%-37.27% |
| Max drawdown duration | IWO JSML | 44d73d | 84d84d | 280d287d | 1409d1093d |
Trading data
IWO | JSML | |
Last sale 9/11/2026 at 1:30 PM | $367.63 | $86.76 |
| Previous close 09/10/2026 | $365.67 | $86.37 |
| Consolidated volume 09/10/2026 | ||
| 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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JSML
is actively managed and doesn’t replicate an indexIWO | JSML | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/11/2026 at 1:30 PM
Live
Closed
IWO | JSML | |
|---|---|---|
| Last price | $367.63 | $86.76 |
| 1D performance | +0.54% | +0.45% |
| AuM | $14.39 B | $360.53 M |
| E/R | 0.24% | 0.3% |
Characteristics
IWO | JSML | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | Janus Henderson Investors |
| Benchmark | Russell 2000 Growth Index | - |
| N° of holdings | 1095 | 119 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | July 24, 2000 | February 23, 2016 |
| ESG | No | No |
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Exposure
Countries
IWO
USA
96.07%
Other
3.93%
JSML
USA
97.14%
Other
2.86%
Sectors
IWO
Healthcare
29.4%
Technology
17.79%
Industrials
13.73%
Finance
13.29%
Other
25.79%
JSML
Healthcare
26.88%
Technology
20.74%
Finance
15.52%
Industrials
8.64%
Consumer Services
7.38%
Other
20.83%
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Diversification
IWO
Total weight of top 15 holdings out of 15
8.65%
JSML
Total weight of top 15 holdings out of 15
24.24%
Top 15 holdings
Data as of July 31, 2026
IWO
Moog, Inc.
0.76%
BrightSpring Health Services, Inc.
0.76%
Glaukos Corp.
0.62%
Krystal Biotech, Inc.
0.61%
Brinker International, Inc.
0.58%
Crinetics Pharmaceuticals, Inc.
0.55%
HealthEquity, Inc.
0.55%
JFrog Ltd.
0.54%
Protagonist Therapeutics, Inc.
0.54%
StoneX Group, Inc.
0.54%
Ryman Hospitality Properties, Inc.
0.53%
FirstCash Holdings, Inc.
0.53%
ESCO Technologies, Inc.
0.53%
Argan, Inc.
0.51%
InterDigital, Inc.
0.50%
JSML
TriNet Group, Inc.
2.20%
Ryman Hospitality Properties, Inc.
2.14%
Cactus, Inc.
2.11%
EnerSys
1.74%
Victory Capital Holdings, Inc.
1.64%
Tenable Holdings, Inc.
1.54%
StepStone Group, Inc.
1.54%
CTS Corp.
1.49%
Brinker International, Inc.
1.47%
Commvault Systems, Inc.
1.46%
Kontoor Brands, Inc.
1.45%
MeiraGTx Holdings Plc
1.42%
Enova International, Inc.
1.36%
MYR Group, Inc.
1.36%
BrightSpring Health Services, Inc.
1.34%
Frequently asked questions about IWO and JSML
How have the IWO and JSML ETFs performed in 2026?
As of September 11, 2026, IWO is up 13.91% year-to-date (YTD), while JSML has returned 18.12%. That puts JSML better performer ahead so far this year.
Which ETF is attracting more investor money: IWO or JSML?
Year-to-date, the IWO ETF saw -$570M in flows, compared to +$55M for JSML.
Which ETF is more volatile: IWO or JSML?
Over the past year, IWO had a volatility of 22.37%, while JSML experienced 22.21%.
Which ETF is bigger: IWO or JSML?
As of September 11, 2026, IWO holds $14.39 B in assets under management (AUM), while JSML manages $360.53 M.
What sectors do the IWO and JSML ETFs invest in?
IWO leans toward sectors like Healthcare, Technology and Industrials. Meanwhile, JSML focuses on Healthcare, Technology and Finance.
What are the top holdings of the IWO ETF and JSML ETF?
IWO top holdings include Moog, Inc., BrightSpring Health Services, Inc. and Glaukos Corp.. JSML holds in its top three: TriNet Group, Inc., Ryman Hospitality Properties, Inc. and Cactus, Inc..
Which ETF is more diversified: IWO or JSML?
IWO holds 1102 securities with 8.65% of its assets in the top 15. JSML has 119 securities and a top 15 weight of 24.24%.
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