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. IWM's top 3 sector exposures are Finance, Healthcare and Technology. In contrast, PSC's top sector exposures are Finance, Technology and Healthcare. IWM is less expensive with a Total Expense Ratio (TER) of 0.19%, versus 0.38% for PSC. IWM is up 18.69% year-to-date (YTD) with -$7.68B in YTD flows. PSC performs worse with 17.36% YTD performance, and +$375M 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 07/24/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IWM PSC | -1.85%-0.98% | +5.39%+6.66% | +18.69%+17.36% | +31.54%+27.72% | +54.71%+57.18% | +40.68%+56.77% |
| Flows | IWM PSC | -$2.60B-$25M | -$1.76B+$86M | -$7.68B+$375M | -$5.18B+$1.04B | -$3.63B+$1.49B | -$4.98B+$171M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IWM PSC | +18.47%+16.36% | +19.40%+17.64% | +21.23%+19.60% | +22.55%+20.65% |
| Max drawdown | IWM PSC | -4.78%-3.74% | -11.03%-9.87% | -27.52%-23.69% | -31.96%-25.73% |
| Max drawdown duration | IWM PSC | 16d24d | 82d84d | 289d284d | 1093d844d |
Trading data
IWM | PSC | |
Last sale 7/27/2026 at 3:50 PM | $291.57 | $67.75 |
| Previous close 07/24/2026 | $291.17 | $67.46 |
| Consolidated volume 07/24/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of June 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 7/27/2026 at 3:50 PM
Live
Closed
IWM | PSC | |
|---|---|---|
| Last price | $291.57 | $67.75 |
| 1D performance | +0.14% | +0.44% |
| AuM | $78.67 B | $2.21 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 | 1961 | 506 |
| 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
95.01%
Other
4.99%
PSC
USA
92.64%
Other
7.36%
Sectors
IWM
Finance
25.48%
Healthcare
20.01%
Technology
12.88%
Industrials
11.47%
Other
30.16%
PSC
Finance
22.18%
Technology
20.03%
Healthcare
16.89%
Industrials
14.07%
Other
26.83%
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Diversification
IWM
Total weight of top 15 holdings out of 15
4.84%
PSC
Total weight of top 15 holdings out of 15
14.5%
Top 15 holdings
Data as of June 30, 2026
IWM
Moog, Inc.
0.38%
Hut 8 Corp.
0.37%
ViaSat, Inc.
0.35%
BrightSpring Health Services, Inc.
0.35%
Cytokinetics, Inc.
0.35%
MaxLinear, Inc.
0.34%
Argan, Inc.
0.34%
UMB Financial Corp.
0.33%
JFrog Ltd.
0.31%
Riot Platforms, Inc.
0.30%
Krystal Biotech, Inc.
0.30%
ESCO Technologies, Inc.
0.29%
CareTrust REIT, Inc.
0.28%
Old National Bancorp
0.28%
FirstCash Holdings, Inc.
0.28%
PSC
Sezzle, Inc.
1.31%
Hims & Hers Health, Inc.
1.30%
Credo Technology Group Holding Ltd.
1.22%
Sterling Infrastructure, Inc.
1.14%
DigitalOcean Holdings, Inc.
1.07%
TTM Technologies, Inc.
1.07%
Argan, Inc.
1.00%
Vicor Corp.
0.92%
Bread Financial Holdings, Inc.
0.92%
Guardant Health, Inc.
0.88%
Zeta Global Holdings Corp.
0.77%
Powell Industries, Inc.
0.75%
Enova International, Inc.
0.74%
Dycom Industries, Inc.
0.71%
Planet Labs PBC
0.70%
Frequently asked questions about IWM and PSC
How have the IWM and PSC ETFs performed in 2026?
As of July 24, 2026, IWM is up 18.69% year-to-date (YTD), while PSC has returned 17.36%. That puts IWM better performer ahead so far this year.
Which ETF is attracting more investor money: IWM or PSC?
Year-to-date, the IWM ETF saw -$7.68B in flows, compared to +$375M for PSC.
Which ETF is more volatile: IWM or PSC?
Over the past year, IWM had a volatility of 19.4%, while PSC experienced 17.64%.
Which ETF is bigger: IWM or PSC?
As of July 24, 2026, IWM holds $78.67 B in assets under management (AUM), while PSC manages $2.21 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, Technology and Healthcare.
What are the top holdings of the IWM ETF and PSC ETF?
IWM top holdings include Moog, Inc., Hut 8 Corp. and ViaSat, Inc.. PSC holds in its top three: Sezzle, Inc., Hims & Hers Health, Inc. and Credo Technology Group Holding Ltd..
Which ETF is more diversified: IWM or PSC?
IWM holds 1992 securities with 4.84% of its assets in the top 15. PSC has 507 securities and a top 15 weight of 14.5%.
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Latest news about IWM & PSC
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