PSCvsIWMETF Comparison
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Principal U.S. Small-Cap ETF (PSC) belongs to the US Multi-Factor 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. PSC is more expensive with a Total Expense Ratio (TER) of 0.38%, versus 0.19% for IWM. PSC is up 17.63% year-to-date (YTD) with +$890M in YTD flows. IWM performs worse with 16.51% YTD performance, and -$5.87B in YTD flows. Run a side-by-side ETF comparison of PSC 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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PSC 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. | PSC IWM | -4.14%-6.01% | +0.10%-2.95% | +17.63%+16.51% | +20.43%+20.66% | +65.21%+61.26% | +56.34%+36.82% |
| Flows | PSC IWM | +$372M+$939M | +$498M-$427M | +$890M-$5.87B | +$1.43B-$3.40B | +$1.90B-$346M | +$704M-$3.26B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | PSC IWM | +12.13%+13.77% | +16.95%+18.88% | +19.54%+21.24% | +20.54%+22.50% |
| Max drawdown | PSC IWM | -4.42%-6.32% | -9.87%-11.03% | -23.69%-27.52% | -25.73%-31.96% |
| Max drawdown duration | PSC IWM | 30d30d | 84d82d | 284d289d | 844d1093d |
Trading data
PSC | IWM | |
Last sale 9/16/2026 at 3:47 PM | $68.04 | $286.42 |
| Previous close 09/15/2026 | $67.59 | $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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PSC
is actively managed and doesn’t replicate an indexPSC | 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 9/16/2026 at 3:47 PM
Live
Closed
PSC | IWM | |
|---|---|---|
| Last price | $68.04 | $286.42 |
| 1D performance | +0.67% | +0.45% |
| AuM | $2.72 B | $78.79 B |
| E/R | 0.38% | 0.19% |
Characteristics
PSC | IWM | |
|---|---|---|
| Management strategy | Active | Passive |
| Provider | Principal Global Investors | iShares |
| Benchmark | - | Russell 2000 Index |
| N° of holdings | 490 | 1945 |
| Asset class | - | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | September 21, 2016 | May 22, 2000 |
| ESG | No | No |
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Exposure
Countries
PSC
USA
92.8%
Other
7.2%
IWM
USA
95.53%
Other
4.47%
Sectors
PSC
Finance
24.82%
Healthcare
19.79%
Technology
14.69%
Industrials
9.56%
Other
31.14%
IWM
Finance
26.78%
Healthcare
20.22%
Technology
11.82%
Industrials
10.54%
Other
30.64%
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Diversification
PSC
Total weight of top 15 holdings out of 15
10.5%
IWM
Total weight of top 15 holdings out of 15
4.93%
Top 15 holdings
Data as of July 31, 2026
PSC
Brinker International, Inc.
0.83%
Bread Financial Holdings, Inc.
0.76%
BrightSpring Health Services, Inc.
0.75%
Marex Group Ltd.
0.75%
WisdomTree, Inc.
0.74%
Zeta Global Holdings Corp.
0.72%
Freshworks, Inc.
0.72%
CareTrust REIT, Inc.
0.70%
10X Genomics, Inc.
0.69%
StoneX Group, Inc.
0.68%
Black Hills Corp.
0.68%
FirstCash Holdings, Inc.
0.64%
Moog, Inc.
0.63%
Portland General Electric Co.
0.61%
Krystal Biotech, Inc.
0.60%
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 PSC and IWM
How have the PSC and IWM ETFs performed in 2026?
As of September 15, 2026, PSC is up 17.63% year-to-date (YTD), while IWM has returned 16.51%. That puts PSC better performer ahead so far this year.
Which ETF is attracting more investor money: PSC or IWM?
Year-to-date, the PSC ETF saw +$890M in flows, compared to -$5.87B for IWM.
Which ETF is more volatile: PSC or IWM?
Over the past year, PSC had a volatility of 16.95%, while IWM experienced 18.88%.
Which ETF is bigger: PSC or IWM?
As of September 15, 2026, PSC holds $2.72 B in assets under management (AUM), while IWM manages $78.79 B.
What sectors do the PSC and IWM ETFs invest in?
PSC leans toward sectors like Finance, Healthcare and Technology. Meanwhile, IWM focuses on Finance, Healthcare and Technology.
What are the top holdings of the PSC ETF and IWM ETF?
PSC top holdings include Brinker International, Inc., Bread Financial Holdings, 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: PSC or IWM?
PSC holds 491 securities with 10.5% of its assets in the top 15. IWM has 1957 securities and a top 15 weight of 4.93%.
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