BGNMX vs. PMTGX
BGNMX (American Century Ginnie Mae Fund) and PMTGX (PIA MBS Bond Fund) are both Government Bonds funds. Over the past 10 years, BGNMX returned 0.85%/yr vs 1.15%/yr for PMTGX. Their correlation of 0.84 suggests significant overlap in exposure. BGNMX charges 0.55%/yr vs 0.23%/yr for PMTGX.
Performance
BGNMX vs. PMTGX - Performance Comparison
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Returns By Period
In the year-to-date period, BGNMX achieves a 0.62% return, which is significantly higher than PMTGX's 0.18% return. Over the past 10 years, BGNMX has underperformed PMTGX with an annualized return of 0.85%, while PMTGX has yielded a comparatively higher 1.15% annualized return.
BGNMX
- 1D
- 0.11%
- 1M
- 0.66%
- YTD
- 0.62%
- 6M
- 0.73%
- 1Y
- 4.94%
- 3Y*
- 3.69%
- 5Y*
- -0.11%
- 10Y*
- 0.85%
PMTGX
- 1D
- 0.12%
- 1M
- 0.91%
- YTD
- 0.18%
- 6M
- 0.11%
- 1Y
- 4.65%
- 3Y*
- 3.78%
- 5Y*
- 0.21%
- 10Y*
- 1.15%
BGNMX vs. PMTGX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BGNMX American Century Ginnie Mae Fund | 0.62% | 7.43% | 0.52% | 4.72% | -12.06% | -1.79% | 3.73% | 6.17% | 0.44% | 1.22% |
PMTGX PIA MBS Bond Fund | 0.18% | 7.83% | 0.96% | 4.73% | -11.37% | -1.18% | 3.85% | 6.02% | 0.76% | 2.35% |
Correlation
The correlation between BGNMX and PMTGX is 0.88, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.88 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.90 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.91 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.86 |
Correlation (All Time) Calculated using the full available price history since Mar 1, 2006 | 0.84 |
The correlation between BGNMX and PMTGX has been stable across timeframes, ranging from 0.84 to 0.91 - a consistent structural relationship.
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Return for Risk
BGNMX vs. PMTGX — Risk / Return Rank
BGNMX
PMTGX
BGNMX vs. PMTGX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Ginnie Mae Fund (BGNMX) and PIA MBS Bond Fund (PMTGX). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| BGNMX | PMTGX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.17 | ||
| Sortino ratioReturn per unit of downside risk | +0.26 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.20 | +0.04 |
| Calmar ratioReturn relative to maximum drawdown | 1.73 | 1.34 | +0.39 |
| Martin ratioReturn relative to average drawdown | 5.41 | 3.99 | +1.42 |
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Drawdowns
BGNMX vs. PMTGX - Drawdown Comparison
The maximum BGNMX drawdown since its inception was -18.46%, which is greater than PMTGX's maximum drawdown of -17.09%. Use the drawdown chart below to compare losses from any high point for BGNMX and PMTGX.
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Drawdown Indicators
| BGNMX | PMTGX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.46% | -17.09% | -1.37% |
Max Drawdown (1Y)Largest decline over 1 year | -3.07% | -3.68% | +0.61% |
Max Drawdown (3Y)Largest decline over 3 years | -7.78% | -7.66% | -0.12% |
Max Drawdown (5Y)Largest decline over 5 years | -17.74% | -16.86% | -0.88% |
Max Drawdown (10Y)Largest decline over 10 years | -18.46% | -17.09% | -1.37% |
Current DrawdownCurrent decline from peak | -1.72% | -1.97% | +0.25% |
Average DrawdownAverage peak-to-trough decline | -2.03% | -2.13% | +0.10% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.98% | 1.23% | -0.25% |
Volatility
BGNMX vs. PMTGX - Volatility Comparison
American Century Ginnie Mae Fund (BGNMX) has a higher volatility of 1.28% compared to PIA MBS Bond Fund (PMTGX) at 1.15%. This indicates that BGNMX's price experiences larger fluctuations and is considered to be riskier than PMTGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BGNMX | PMTGX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.28% | 1.15% | +0.13% |
Volatility (6M)Calculated over the trailing 6-month period | 3.10% | 3.26% | -0.16% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.05% | 4.32% | -0.27% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.47% | 6.30% | +0.17% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.85% | 4.77% | +0.08% |
BGNMX vs. PMTGX - Expense Ratio Comparison
BGNMX has a 0.55% expense ratio, which is higher than PMTGX's 0.23% expense ratio.
Dividends
BGNMX vs. PMTGX - Dividend Comparison
BGNMX's dividend yield for the trailing twelve months is around 3.94%, more than PMTGX's 3.73% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BGNMX American Century Ginnie Mae Fund | 3.94% | 3.86% | 3.70% | 3.21% | 1.90% | 1.64% | 2.16% | 2.68% | 2.65% | 2.37% | 2.37% | 2.37% |
PMTGX PIA MBS Bond Fund | 3.73% | 4.10% | 4.16% | 3.48% | 2.17% | 0.79% | 2.12% | 2.96% | 2.76% | 2.75% | 2.96% | 2.79% |
Frequently Asked Questions
BGNMX and PMTGX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BGNMX has higher volatility (1.28%) compared to PMTGX (1.15%). In terms of maximum drawdown, BGNMX dropped -18.46% vs PMTGX's -17.09%.
BGNMX currently has the higher Sharpe Ratio (1.31 vs 1.14), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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