PRGMX vs. CMPGX
Compare and contrast key facts about T. Rowe Price GNMA Fund (PRGMX) and Principal Government & High Quality Bond Fund (CMPGX).
PRGMX is managed by T. Rowe Price. It was launched on Nov 25, 1985. CMPGX is managed by Principal Funds. It was launched on May 3, 1984.
Performance
PRGMX vs. CMPGX - Performance Comparison
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PRGMX vs. CMPGX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
PRGMX T. Rowe Price GNMA Fund | 0.87% | 10.46% | 0.92% | 5.62% | -11.45% | -2.18% | 4.21% | 5.18% | 0.58% | 1.23% |
CMPGX Principal Government & High Quality Bond Fund | 0.03% | 7.56% | 0.46% | 3.98% | -12.34% | -1.80% | 2.50% | 6.12% | 0.52% | 1.36% |
Returns By Period
In the year-to-date period, PRGMX achieves a 0.87% return, which is significantly higher than CMPGX's 0.03% return. Over the past 10 years, PRGMX has outperformed CMPGX with an annualized return of 1.40%, while CMPGX has yielded a comparatively lower 0.61% annualized return.
PRGMX
- 1D
- 0.24%
- 1M
- -1.44%
- YTD
- 0.87%
- 6M
- 2.89%
- 1Y
- 7.97%
- 3Y*
- 4.79%
- 5Y*
- 0.72%
- 10Y*
- 1.40%
CMPGX
- 1D
- 0.33%
- 1M
- -1.62%
- YTD
- 0.03%
- 6M
- 0.99%
- 1Y
- 4.22%
- 3Y*
- 3.09%
- 5Y*
- -0.55%
- 10Y*
- 0.61%
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PRGMX vs. CMPGX - Expense Ratio Comparison
PRGMX has a 0.58% expense ratio, which is lower than CMPGX's 0.78% expense ratio.
Return for Risk
PRGMX vs. CMPGX — Risk / Return Rank
PRGMX
CMPGX
PRGMX vs. CMPGX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for T. Rowe Price GNMA Fund (PRGMX) and Principal Government & High Quality Bond Fund (CMPGX). 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.
| PRGMX | CMPGX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.77 | 0.93 | +0.83 |
Sortino ratioReturn per unit of downside risk | 2.53 | 1.32 | +1.22 |
Omega ratioGain probability vs. loss probability | 1.33 | 1.17 | +0.16 |
Calmar ratioReturn relative to maximum drawdown | 3.01 | 1.52 | +1.49 |
Martin ratioReturn relative to average drawdown | 8.77 | 4.29 | +4.48 |
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
| PRGMX | CMPGX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.77 | 0.93 | +0.83 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.11 | -0.08 | +0.20 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.30 | 0.12 | +0.17 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.94 | 0.83 | +0.11 |
Correlation
The correlation between PRGMX and CMPGX is 0.85, 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
PRGMX vs. CMPGX - Dividend Comparison
PRGMX's dividend yield for the trailing twelve months is around 6.90%, more than CMPGX's 3.23% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
PRGMX T. Rowe Price GNMA Fund | 6.90% | 6.52% | 3.54% | 3.54% | 1.38% | 0.59% | 1.44% | 2.39% | 2.78% | 2.98% | 2.88% | 3.12% |
CMPGX Principal Government & High Quality Bond Fund | 3.23% | 3.44% | 2.84% | 2.19% | 1.35% | 1.08% | 2.00% | 2.43% | 2.65% | 3.30% | 3.76% | 2.96% |
Drawdowns
PRGMX vs. CMPGX - Drawdown Comparison
The maximum PRGMX drawdown since its inception was -18.22%, smaller than the maximum CMPGX drawdown of -19.56%. Use the drawdown chart below to compare losses from any high point for PRGMX and CMPGX.
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Drawdown Indicators
| PRGMX | CMPGX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.22% | -19.56% | +1.34% |
Max Drawdown (1Y)Largest decline over 1 year | -2.93% | -3.35% | +0.42% |
Max Drawdown (5Y)Largest decline over 5 years | -17.70% | -19.17% | +1.47% |
Max Drawdown (10Y)Largest decline over 10 years | -18.22% | -19.56% | +1.34% |
Current DrawdownCurrent decline from peak | -1.91% | -3.64% | +1.73% |
Average DrawdownAverage peak-to-trough decline | -2.25% | -2.41% | +0.16% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.00% | 1.19% | -0.19% |
Volatility
PRGMX vs. CMPGX - Volatility Comparison
The current volatility for T. Rowe Price GNMA Fund (PRGMX) is 1.74%, while Principal Government & High Quality Bond Fund (CMPGX) has a volatility of 1.93%. This indicates that PRGMX experiences smaller price fluctuations and is considered to be less risky than CMPGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PRGMX | CMPGX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.74% | 1.93% | -0.19% |
Volatility (6M)Calculated over the trailing 6-month period | 2.76% | 2.81% | -0.05% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.77% | 4.93% | -0.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.33% | 6.59% | -0.26% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.73% | 4.94% | -0.21% |