PSSMX vs. IWM
Compare and contrast key facts about Principal SmallCap S&P 600 Index Fund (PSSMX) and iShares Russell 2000 ETF (IWM).
PSSMX is managed by Principal. It was launched on Dec 6, 2000. IWM is a passively managed fund by iShares that tracks the performance of the Russell 2000 Index. It was launched on May 22, 2000.
Performance
PSSMX vs. IWM - Performance Comparison
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PSSMX vs. IWM - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PSSMX Principal SmallCap S&P 600 Index Fund | 3.33% | 5.34% | 16.60% | 15.18% | -16.69% | 25.39% | 10.65% | 21.99% | -9.42% | 12.46% |
IWM iShares Russell 2000 ETF | 1.56% | 12.66% | 11.38% | 16.83% | -20.48% | 14.54% | 20.03% | 25.39% | -11.12% | 14.58% |
Returns By Period
In the year-to-date period, PSSMX achieves a 3.33% return, which is significantly higher than IWM's 1.56% return. Both investments have delivered pretty close results over the past 10 years, with PSSMX having a 9.90% annualized return and IWM not far behind at 9.83%.
PSSMX
- 1D
- 2.81%
- 1M
- -4.74%
- YTD
- 3.33%
- 6M
- 4.72%
- 1Y
- 19.51%
- 3Y*
- 12.61%
- 5Y*
- 4.99%
- 10Y*
- 9.90%
IWM
- 1D
- 0.63%
- 1M
- -5.23%
- YTD
- 1.56%
- 6M
- 3.44%
- 1Y
- 26.43%
- 3Y*
- 13.18%
- 5Y*
- 3.47%
- 10Y*
- 9.83%
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PSSMX vs. IWM - Expense Ratio Comparison
PSSMX has a 0.73% expense ratio, which is higher than IWM's 0.19% expense ratio.
Return for Risk
PSSMX vs. IWM — Risk / Return Rank
PSSMX
IWM
PSSMX vs. IWM - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Principal SmallCap S&P 600 Index Fund (PSSMX) and iShares Russell 2000 ETF (IWM). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
| PSSMX | IWM | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.88 | 1.15 | -0.27 |
Sortino ratioReturn per unit of downside risk | 1.37 | 1.70 | -0.33 |
Omega ratioGain probability vs. loss probability | 1.18 | 1.22 | -0.04 |
Calmar ratioReturn relative to maximum drawdown | 1.37 | 1.93 | -0.55 |
Martin ratioReturn relative to average drawdown | 5.53 | 7.08 | -1.55 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| PSSMX | IWM | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.88 | 1.15 | -0.27 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.23 | 0.15 | +0.08 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.43 | 0.43 | 0.00 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.39 | 0.34 | +0.05 |
Correlation
The correlation between PSSMX and IWM is 0.97, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
PSSMX vs. IWM - Dividend Comparison
PSSMX's dividend yield for the trailing twelve months is around 9.66%, more than IWM's 1.02% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PSSMX Principal SmallCap S&P 600 Index Fund | 9.66% | 9.98% | 15.91% | 3.75% | 10.45% | 8.23% | 1.67% | 6.56% | 13.08% | 6.03% | 6.15% | 8.07% |
IWM iShares Russell 2000 ETF | 1.02% | 1.04% | 1.15% | 1.35% | 1.48% | 0.94% | 1.04% | 1.26% | 1.40% | 1.26% | 1.38% | 1.54% |
Drawdowns
PSSMX vs. IWM - Drawdown Comparison
The maximum PSSMX drawdown since its inception was -58.43%, roughly equal to the maximum IWM drawdown of -59.05%. Use the drawdown chart below to compare losses from any high point for PSSMX and IWM.
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Drawdown Indicators
| PSSMX | IWM | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -58.43% | -59.05% | +0.62% |
Max Drawdown (1Y)Largest decline over 1 year | -14.85% | -13.74% | -1.11% |
Max Drawdown (5Y)Largest decline over 5 years | -27.01% | -31.91% | +4.90% |
Max Drawdown (10Y)Largest decline over 10 years | -44.85% | -41.13% | -3.72% |
Current DrawdownCurrent decline from peak | -5.83% | -7.33% | +1.50% |
Average DrawdownAverage peak-to-trough decline | -9.58% | -10.83% | +1.25% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.68% | 3.73% | -0.05% |
Volatility
PSSMX vs. IWM - Volatility Comparison
The current volatility for Principal SmallCap S&P 600 Index Fund (PSSMX) is 6.28%, while iShares Russell 2000 ETF (IWM) has a volatility of 7.36%. This indicates that PSSMX experiences smaller price fluctuations and is considered to be less risky than IWM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PSSMX | IWM | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.28% | 7.36% | -1.08% |
Volatility (6M)Calculated over the trailing 6-month period | 13.05% | 14.48% | -1.43% |
Volatility (1Y)Calculated over the trailing 1-year period | 22.67% | 23.18% | -0.51% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 21.87% | 22.54% | -0.67% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.92% | 22.99% | -0.07% |