DFFGX vs. PRGMX
Compare and contrast key facts about DFA Short-Term Government Portfolio (DFFGX) and T. Rowe Price GNMA Fund (PRGMX).
DFFGX is managed by Dimensional. It was launched on May 31, 1987. PRGMX is managed by T. Rowe Price. It was launched on Nov 25, 1985.
Performance
DFFGX vs. PRGMX - Performance Comparison
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DFFGX vs. PRGMX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
DFFGX DFA Short-Term Government Portfolio | 0.87% | 3.12% | 5.29% | 5.01% | -4.41% | -1.27% | 0.39% | 2.52% | 1.17% | 0.51% |
PRGMX T. Rowe Price GNMA Fund | 0.62% | 10.46% | 0.92% | 5.62% | -11.45% | -2.18% | 4.21% | 5.18% | 0.58% | 1.23% |
Returns By Period
In the year-to-date period, DFFGX achieves a 0.87% return, which is significantly higher than PRGMX's 0.62% return. Over the past 10 years, DFFGX has underperformed PRGMX with an annualized return of 1.18%, while PRGMX has yielded a comparatively higher 1.38% annualized return.
DFFGX
- 1D
- 0.06%
- 1M
- 0.26%
- YTD
- 0.87%
- 6M
- 1.92%
- 1Y
- 2.99%
- 3Y*
- 4.36%
- 5Y*
- 1.83%
- 10Y*
- 1.18%
PRGMX
- 1D
- 0.49%
- 1M
- -2.15%
- YTD
- 0.62%
- 6M
- 2.89%
- 1Y
- 8.10%
- 3Y*
- 4.70%
- 5Y*
- 0.69%
- 10Y*
- 1.38%
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DFFGX vs. PRGMX - Expense Ratio Comparison
DFFGX has a 0.18% expense ratio, which is lower than PRGMX's 0.58% expense ratio.
Return for Risk
DFFGX vs. PRGMX — Risk / Return Rank
DFFGX
PRGMX
DFFGX vs. PRGMX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for DFA Short-Term Government Portfolio (DFFGX) and T. Rowe Price GNMA Fund (PRGMX). 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.
| DFFGX | PRGMX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.55 | 1.80 | -0.26 |
Sortino ratioReturn per unit of downside risk | 1.70 | 2.59 | -0.88 |
Omega ratioGain probability vs. loss probability | 2.20 | 1.33 | +0.87 |
Calmar ratioReturn relative to maximum drawdown | 3.09 | 3.15 | -0.06 |
Martin ratioReturn relative to average drawdown | 9.14 | 9.25 | -0.10 |
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
| DFFGX | PRGMX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.55 | 1.80 | -0.26 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.99 | 0.11 | +0.88 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.76 | 0.29 | +0.46 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.49 | 0.94 | -0.44 |
Correlation
The correlation between DFFGX and PRGMX is 0.53, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
DFFGX vs. PRGMX - Dividend Comparison
DFFGX's dividend yield for the trailing twelve months is around 2.86%, less than PRGMX's 6.91% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
DFFGX DFA Short-Term Government Portfolio | 2.86% | 2.98% | 4.87% | 3.57% | 1.85% | 0.15% | 0.29% | 1.83% | 1.53% | 1.18% | 0.99% | 1.27% |
PRGMX T. Rowe Price GNMA Fund | 6.91% | 6.52% | 3.54% | 3.54% | 1.38% | 0.59% | 1.44% | 2.39% | 2.78% | 2.98% | 2.88% | 3.12% |
Drawdowns
DFFGX vs. PRGMX - Drawdown Comparison
The maximum DFFGX drawdown since its inception was -10.09%, smaller than the maximum PRGMX drawdown of -18.22%. Use the drawdown chart below to compare losses from any high point for DFFGX and PRGMX.
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Drawdown Indicators
| DFFGX | PRGMX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -10.09% | -18.22% | +8.13% |
Max Drawdown (1Y)Largest decline over 1 year | -1.00% | -2.93% | +1.93% |
Max Drawdown (5Y)Largest decline over 5 years | -6.49% | -17.70% | +11.21% |
Max Drawdown (10Y)Largest decline over 10 years | -6.49% | -18.22% | +11.73% |
Current DrawdownCurrent decline from peak | 0.00% | -2.15% | +2.15% |
Average DrawdownAverage peak-to-trough decline | -0.86% | -2.25% | +1.39% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.34% | 1.00% | -0.66% |
Volatility
DFFGX vs. PRGMX - Volatility Comparison
The current volatility for DFA Short-Term Government Portfolio (DFFGX) is 0.15%, while T. Rowe Price GNMA Fund (PRGMX) has a volatility of 1.75%. This indicates that DFFGX experiences smaller price fluctuations and is considered to be less risky than PRGMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| DFFGX | PRGMX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.15% | 1.75% | -1.60% |
Volatility (6M)Calculated over the trailing 6-month period | 0.40% | 2.79% | -2.39% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.43% | 4.77% | -3.34% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 1.85% | 6.33% | -4.48% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.57% | 4.73% | -3.16% |