IWOvsMMSCETF Comparison
VS
ETF 2
MMSC
First Trust Multi-Manager Small Cap Opportunities ETF
This fund is part of
US Small Cap Growth
+2.1%
iShares Russell 2000 Growth ETF (IWO) and First Trust Multi-Manager Small Cap Opportunities ETF (MMSC) belong to the same industry segment: US Small Cap Growth. Both ETFs have the same top 3 sector exposures: Information Technology, Industrials and Health Care. IWO is less expensive with a Total Expense Ratio (TER) of 0.24%, versus 0.95% for MMSC. IWO is up 20.69% year-to-date (YTD) with -$694M in YTD flows. MMSC performs worse with 16.96% YTD performance, and +$8M in YTD flows. Run a side-by-side ETF comparison of IWO and MMSC 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 MMSC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 06/18/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWO MMSC | +9.15%+5.26% | +23.56%+15.96% | +20.69%+16.96% | +41.43%+41.28% | +66.14%+77.63% | +34.68%n/a |
| Flows | IWO MMSC | -$84M- | -$125M+$1M | -$694M+$8M | -$566M+$15M | -$701M+$31M | -$348M- |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWO MMSC | +26.04%+28.04% | +22.30%+23.29% | +22.79%+22.69% | +24.71%n/a |
| Max drawdown | IWO MMSC | -6.26%-7.47% | -14.82%-14.05% | -28.47%-29.67% | -40.45%n/a |
| Max drawdown duration | IWO MMSC | 13d13d | 84d84d | 280d280d | 1409dn/a |
Trading data
IWO | MMSC | |
Last sale 6/18/2026 at 1:30 PM | $389.04 | $28.66 |
| Previous close 06/18/2026 | $380.02 | $27.97 |
| Consolidated volume 06/18/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of May 29, 2026
1-year trailing difference
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MMSC
is actively managed and doesn’t replicate an indexIWO | MMSC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 6/18/2026 at 1:30 PM
Live
Closed
IWO | MMSC | |
|---|---|---|
| Last price | $389.04 | $28.66 |
| 1D performance | +2.37% | +2.47% |
| AuM | $15.13 B | $51.78 M |
| E/R | 0.24% | 0.95% |
Characteristics
IWO | MMSC | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | First Trust |
| Benchmark | Russell 2000 Growth Index | - |
| N° of holdings | 890 | 170 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | July 24, 2000 | October 14, 2021 |
| ESG | No | No |
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Exposure
Countries
IWO
USA
92.8%
Other
7.2%
MMSC
USA
86.77%
Other
13.23%
Sectors
IWO
Information Techn.
21.84%
Industrials
21.02%
Health Care
19.04%
Consumer Discreti.
7.83%
Other
30.27%
MMSC
Information Techn.
20.54%
Industrials
19.24%
Health Care
17.86%
Consumer Discreti.
8.3%
Other
34.06%
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Diversification
IWO
Total weight of top 15 holdings out of 15
15.88%
MMSC
Total weight of top 15 holdings out of 15
19.21%
Top 15 holdings
Data as of April 30, 2026
IWO
BLOOM ENERGY CORP
3.64%
CREDO TECHNOLOGY GROUP HOLDING
1.65%
FABRINET
1.45%
IONQ
0.92%
STERLING INFRASTRUCTURE INC
0.90%
ADVANCED ENERGY INDUSTRIES
0.85%
US65290E1010
0.82%
MODINE MNFC CO
0.78%
SITIME CORP
0.74%
RAMBUS
0.73%
DYCOM INDUSTRIES
0.71%
VIAVI SOLUTIONS INC
0.71%
KRATOS DEFENSE AND SECURITY SOLS
0.67%
BRIDGEBIO PHARMA
0.66%
GUARDANT HEALTH INC
0.64%
MMSC
BLOOM ENERGY CORP
2.46%
NLIGHT INC
1.56%
MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC
1.55%
FABRINET
1.44%
FIRSTCASH HOLDINGS INC
1.33%
PLANET LABS PBC
1.26%
CREDO TECHNOLOGY GROUP HOLDING
1.24%
LUMENTUM HOLDINGS
1.14%
VSE
1.11%
POWELL INDUSTRIES
1.10%
EZCORP CL A NV
1.03%
US74006W2070
1.01%
SOLARIS OILFIELD INFRASTRUCTURE
1.01%
TRAVERE THERAPEUTICS INC
0.99%
ENCORE CAPITAL GROUP
0.98%
Frequently asked questions about IWO and MMSC
How have the IWO and MMSC ETFs performed in 2026?
As of June 18, 2026, IWO is up 20.69% year-to-date (YTD), while MMSC has returned 16.96%. That puts IWO better performer ahead so far this year.
Which ETF is attracting more investor money: IWO or MMSC?
Year-to-date, the IWO ETF saw -$694M in flows, compared to +$8M for MMSC.
Which ETF is more volatile: IWO or MMSC?
Over the past year, IWO had a volatility of 22.3%, while MMSC experienced 23.29%.
Which ETF is bigger: IWO or MMSC?
As of June 18, 2026, IWO holds $15.13 B in assets under management (AUM), while MMSC manages $51.78 M.
What sectors do the IWO and MMSC ETFs invest in?
IWO leans toward sectors like Information Technology, Industrials and Health Care. Meanwhile, MMSC focuses on Information Technology, Industrials and Health Care.
What are the top holdings of the IWO ETF and MMSC ETF?
IWO top holdings include BLOOM ENERGY CORP, CREDO TECHNOLOGY GROUP HOLDING and FABRINET. MMSC holds in its top three: BLOOM ENERGY CORP, NLIGHT INC and MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC.
Which ETF is more diversified: IWO or MMSC?
IWO holds 1090 securities with 15.88% of its assets in the top 15. MMSC has 204 securities and a top 15 weight of 19.21%.
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