IWMvsPSCETF Comparison
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iShares Russell 2000 ETF (IWM) belongs to the US Small Cap segment. Principal U.S. Small-Cap ETF (PSC) is part of the US Multi-Factor segment. Both ETFs have the same top 3 sector exposures: Finance, Healthcare and Technology. IWM is less expensive with a Total Expense Ratio (TER) of 0.19%, versus 0.38% for PSC. IWM is up 12.8% year-to-date (YTD) with -$7.92B in YTD flows. PSC performs better with 18.32% YTD performance, and +$884M in YTD flows. Run a side-by-side ETF comparison of IWM and PSC 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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IWM vs PSC performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/23/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWM PSC | -2.13%+1.32% | -5.28%+0.94% | +12.80%+18.32% | +13.07%+19.79% | +72.87%+80.82% | +27.92%+50.33% |
| Flows | IWM PSC | -$328M-$9M | -$1.69B+$516M | -$7.92B+$884M | -$3.36B+$1.01B | -$3.41B+$1.87B | -$7.73B+$696M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWM PSC | +13.94%+11.13% | +18.21%+16.27% | +21.10%+19.34% | +22.45%+20.45% |
| Max drawdown | IWM PSC | -11.10%-5.83% | -11.10%-9.87% | -27.52%-23.69% | -31.96%-25.73% |
| Max drawdown duration | IWM PSC | 68d68d | 68d84d | 289d284d | 1093d844d |
Trading data
IWM | PSC | |
Last sale 10/23/2026 at 1:30 PM | $275.75 | $67.91 |
| Previous close 10/22/2026 | $276.67 | $67.94 |
| Consolidated volume 10/22/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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PSC
is actively managed and doesn’t replicate an indexIWM | PSC | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/23/2026 at 1:30 PM
Live
Closed
IWM | PSC | |
|---|---|---|
| Last price | $275.75 | $67.91 |
| 1D performance | -0.33% | -0.04% |
| AuM | $74.21 B | $2.72 B |
| E/R | 0.19% | 0.38% |
Characteristics
IWM | PSC | |
|---|---|---|
| Management strategy | Passive | Active |
| Provider | iShares | Principal Global Investors |
| Benchmark | Russell 2000 Index | - |
| N° of holdings | 1940 | 488 |
| Asset class | Equities | - |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 22, 2000 | September 21, 2016 |
| ESG | No | No |
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Exposure
Countries
IWM
USA
94.99%
Other
5.01%
PSC
USA
92.41%
Other
7.59%
Sectors
IWM
Finance
26.05%
Healthcare
20.69%
Technology
11.8%
Industrials
10.33%
Other
31.12%
PSC
Finance
24.21%
Healthcare
20.36%
Technology
14.6%
Industrials
9.23%
Other
31.6%
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Diversification
IWM
Total weight of top 15 holdings out of 15
4.62%
PSC
Total weight of top 15 holdings out of 15
11.69%
Top 15 holdings
Data as of August 31, 2026
IWM
JFrog Ltd.
0.35%
Moog, Inc.
0.34%
UMB Financial Corp.
0.34%
Glaukos Corp.
0.33%
BlackRock Cash Funds - Treasury
0.33%
Brinker International, Inc.
0.32%
BrightSpring Health Services, Inc.
0.30%
Krystal Biotech, Inc.
0.30%
Cytokinetics, Inc.
0.30%
Old National Bancorp
0.29%
Protagonist Therapeutics, Inc.
0.29%
SM Energy Co.
0.29%
Twist Bioscience Corp.
0.28%
FirstCash Holdings, Inc.
0.28%
CareTrust REIT, Inc.
0.28%
PSC
Zeta Global Holdings Corp.
1.01%
Twist Bioscience Corp.
0.96%
WisdomTree, Inc.
0.96%
Brinker International, Inc.
0.91%
10X Genomics, Inc.
0.88%
Freshworks, Inc.
0.87%
Marex Group Ltd.
0.79%
Bread Financial Holdings, Inc.
0.73%
FirstCash Holdings, Inc.
0.70%
Black Hills Corp.
0.69%
TransMedics Group, Inc.
0.66%
InterDigital, Inc.
0.65%
CareTrust REIT, Inc.
0.65%
Cheesecake Factory, Inc.
0.62%
Patterson-UTI Energy, Inc.
0.61%
Frequently asked questions about IWM and PSC
How have the IWM and PSC ETFs performed in 2026?
As of October 23, 2026, IWM is up 12.8% year-to-date (YTD), while PSC has returned 18.32%. That puts PSC better performer ahead so far this year.
Which ETF is attracting more investor money: IWM or PSC?
Year-to-date, the IWM ETF saw -$7.92B in flows, compared to +$884M for PSC.
Which ETF is more volatile: IWM or PSC?
Over the past year, IWM had a volatility of 18.21%, while PSC experienced 16.27%.
Which ETF is bigger: IWM or PSC?
As of October 23, 2026, IWM holds $74.21 B in assets under management (AUM), while PSC manages $2.72 B.
What sectors do the IWM and PSC ETFs invest in?
IWM leans toward sectors like Finance, Healthcare and Technology. Meanwhile, PSC focuses on Finance, Healthcare and Technology.
What are the top holdings of the IWM ETF and PSC ETF?
IWM top holdings include JFrog Ltd., Moog, Inc. and UMB Financial Corp.. PSC holds in its top three: Zeta Global Holdings Corp., Twist Bioscience Corp. and WisdomTree, Inc..
Which ETF is more diversified: IWM or PSC?
IWM holds 1953 securities with 4.62% of its assets in the top 15. PSC has 489 securities and a top 15 weight of 11.69%.
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