FSMDX vs. PMBMX
Compare and contrast key facts about Fidelity Mid Cap Index Fund (FSMDX) and Principal MidCap Fund (PMBMX).
FSMDX is managed by Fidelity. It was launched on Sep 8, 2011. PMBMX is managed by Principal. It was launched on Dec 6, 2000.
Performance
FSMDX vs. PMBMX - Performance Comparison
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Returns By Period
In the year-to-date period, FSMDX achieves a 2.44% return, which is significantly higher than PMBMX's -10.79% return. Both investments have delivered pretty close results over the past 10 years, with FSMDX having a 11.00% annualized return and PMBMX not far ahead at 11.41%.
FSMDX
- 1D
- 0.45%
- 1M
- -2.30%
- YTD
- 2.44%
- 6M
- 1.87%
- 1Y
- 29.62%
- 3Y*
- 13.84%
- 5Y*
- 7.23%
- 10Y*
- 11.00%
PMBMX
- 1D
- 0.38%
- 1M
- -6.38%
- YTD
- -10.79%
- 6M
- -14.43%
- 1Y
- -6.93%
- 3Y*
- 9.82%
- 5Y*
- 4.88%
- 10Y*
- 11.41%
FSMDX vs. PMBMX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FSMDX Fidelity Mid Cap Index Fund | 2.44% | 10.58% | 15.55% | 17.20% | -17.27% | 22.56% | 17.13% | 30.53% | -9.38% | 18.04% |
PMBMX Principal MidCap Fund | -10.79% | 1.16% | 23.38% | 25.36% | -23.52% | 24.63% | 17.69% | 49.09% | -7.28% | 24.73% |
Correlation
The correlation between FSMDX and PMBMX is 0.93, indicating a strong positive relationship between their price movements. Combining them offers limited diversification — they'll tend to fall together during downturns. For meaningful risk reduction, look for holdings with correlations below 0.5.
FSMDX vs. PMBMX - Expense Ratio Comparison
FSMDX has a 0.03% expense ratio, which is lower than PMBMX's 1.15% expense ratio.
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Return for Risk
FSMDX vs. PMBMX — Risk / Return Rank
FSMDX
PMBMX
FSMDX vs. PMBMX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Mid Cap Index Fund (FSMDX) and Principal MidCap Fund (PMBMX). 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.
| FSMDX | PMBMX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.81 | -0.58 | +1.39 |
Sortino ratioReturn per unit of downside risk | 1.25 | -0.72 | +1.98 |
Omega ratioGain probability vs. loss probability | 1.18 | 0.91 | +0.27 |
Calmar ratioReturn relative to maximum drawdown | 1.25 | -0.47 | +1.73 |
Martin ratioReturn relative to average drawdown | 5.77 | -1.36 | +7.13 |
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
| FSMDX | PMBMX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.81 | -0.58 | +1.39 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.40 | 0.26 | +0.13 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.57 | 0.60 | -0.03 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.66 | 0.56 | +0.11 |
Drawdowns
FSMDX vs. PMBMX - Drawdown Comparison
The maximum FSMDX drawdown since its inception was -40.35%, smaller than the maximum PMBMX drawdown of -50.69%. Use the drawdown chart below to compare losses from any high point for FSMDX and PMBMX.
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Drawdown Indicators
| FSMDX | PMBMX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -40.35% | -50.69% | +10.34% |
Max Drawdown (1Y)Largest decline over 1 year | -8.16% | -19.53% | +11.37% |
Max Drawdown (5Y)Largest decline over 5 years | -26.07% | -31.48% | +5.41% |
Max Drawdown (10Y)Largest decline over 10 years | -40.35% | -40.60% | +0.25% |
Current DrawdownCurrent decline from peak | -4.69% | -16.77% | +12.08% |
Average DrawdownAverage peak-to-trough decline | -5.00% | -6.67% | +1.67% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.92% | 6.82% | -3.90% |
Volatility
FSMDX vs. PMBMX - Volatility Comparison
Fidelity Mid Cap Index Fund (FSMDX) and Principal MidCap Fund (PMBMX) have volatilities of 5.51% and 5.31%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| FSMDX | PMBMX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.51% | 5.31% | +0.20% |
Volatility (6M)Calculated over the trailing 6-month period | 10.53% | 10.56% | -0.03% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.10% | 18.38% | +0.72% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.26% | 18.56% | -0.30% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.29% | 19.11% | +0.18% |
Dividends
FSMDX vs. PMBMX - Dividend Comparison
FSMDX's dividend yield for the trailing twelve months is around 1.08%, less than PMBMX's 7.18% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSMDX Fidelity Mid Cap Index Fund | 1.08% | 1.10% | 2.46% | 1.39% | 2.07% | 3.35% | 2.34% | 2.86% | 2.21% | 2.17% | 2.23% | 2.84% |
PMBMX Principal MidCap Fund | 7.18% | 6.41% | 6.86% | 2.68% | 3.43% | 8.51% | 1.15% | 9.00% | 12.79% | 3.39% | 2.16% | 6.38% |