FMSFX vs. FXNAX
Compare and contrast key facts about Fidelity Mortgage Securities Fund (FMSFX) and Fidelity U.S. Bond Index Fund (FXNAX).
FMSFX is managed by Fidelity. It was launched on Dec 31, 1984. FXNAX is managed by Fidelity.
Performance
FMSFX vs. FXNAX - Performance Comparison
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FMSFX vs. FXNAX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FMSFX Fidelity Mortgage Securities Fund | -0.01% | 8.29% | 1.00% | 4.91% | -12.61% | -1.20% | 4.41% | 6.43% | 0.79% | 2.35% |
FXNAX Fidelity U.S. Bond Index Fund | -0.45% | 7.14% | 1.35% | 5.82% | -13.55% | -2.10% | 7.63% | 8.50% | 0.04% | 3.50% |
Returns By Period
In the year-to-date period, FMSFX achieves a -0.01% return, which is significantly higher than FXNAX's -0.45% return. Over the past 10 years, FMSFX has underperformed FXNAX with an annualized return of 1.27%, while FXNAX has yielded a comparatively higher 1.52% annualized return.
FMSFX
- 1D
- 0.50%
- 1M
- -2.06%
- YTD
- -0.01%
- 6M
- 1.47%
- 1Y
- 4.96%
- 3Y*
- 3.85%
- 5Y*
- 0.05%
- 10Y*
- 1.27%
FXNAX
- 1D
- 0.48%
- 1M
- -2.25%
- YTD
- -0.45%
- 6M
- 0.56%
- 1Y
- 3.79%
- 3Y*
- 3.45%
- 5Y*
- 0.12%
- 10Y*
- 1.52%
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FMSFX vs. FXNAX - Expense Ratio Comparison
FMSFX has a 0.45% expense ratio, which is higher than FXNAX's 0.03% expense ratio.
Return for Risk
FMSFX vs. FXNAX — Risk / Return Rank
FMSFX
FXNAX
FMSFX vs. FXNAX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Mortgage Securities Fund (FMSFX) and Fidelity U.S. Bond Index Fund (FXNAX). 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.
| FMSFX | FXNAX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.20 | 0.99 | +0.21 |
Sortino ratioReturn per unit of downside risk | 1.71 | 1.44 | +0.28 |
Omega ratioGain probability vs. loss probability | 1.22 | 1.17 | +0.04 |
Calmar ratioReturn relative to maximum drawdown | 1.96 | 1.81 | +0.15 |
Martin ratioReturn relative to average drawdown | 5.68 | 5.15 | +0.53 |
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
| FMSFX | FXNAX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.20 | 0.99 | +0.21 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.01 | 0.02 | -0.01 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.25 | 0.31 | -0.06 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.02 | 0.45 | +0.58 |
Correlation
The correlation between FMSFX and FXNAX is 0.89, 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
FMSFX vs. FXNAX - Dividend Comparison
FMSFX's dividend yield for the trailing twelve months is around 3.62%, more than FXNAX's 3.35% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FMSFX Fidelity Mortgage Securities Fund | 3.62% | 3.93% | 4.12% | 3.50% | 1.43% | 0.62% | 2.40% | 2.62% | 2.57% | 2.60% | 2.65% | 2.05% |
FXNAX Fidelity U.S. Bond Index Fund | 3.35% | 3.58% | 3.40% | 3.15% | 1.81% | 1.74% | 2.92% | 2.68% | 2.74% | 2.57% | 2.76% | 2.52% |
Drawdowns
FMSFX vs. FXNAX - Drawdown Comparison
The maximum FMSFX drawdown since its inception was -18.81%, roughly equal to the maximum FXNAX drawdown of -19.51%. Use the drawdown chart below to compare losses from any high point for FMSFX and FXNAX.
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Drawdown Indicators
| FMSFX | FXNAX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.81% | -19.51% | +0.70% |
Max Drawdown (1Y)Largest decline over 1 year | -3.10% | -2.71% | -0.39% |
Max Drawdown (5Y)Largest decline over 5 years | -18.66% | -18.54% | -0.12% |
Max Drawdown (10Y)Largest decline over 10 years | -18.81% | -19.51% | +0.70% |
Current DrawdownCurrent decline from peak | -2.06% | -3.72% | +1.66% |
Average DrawdownAverage peak-to-trough decline | -1.93% | -3.87% | +1.94% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.07% | 0.95% | +0.12% |
Volatility
FMSFX vs. FXNAX - Volatility Comparison
Fidelity Mortgage Securities Fund (FMSFX) and Fidelity U.S. Bond Index Fund (FXNAX) have volatilities of 1.55% and 1.57%, 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
| FMSFX | FXNAX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.55% | 1.57% | -0.02% |
Volatility (6M)Calculated over the trailing 6-month period | 2.55% | 2.58% | -0.03% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.63% | 4.35% | +0.28% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.74% | 6.04% | +0.70% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.10% | 4.99% | +0.11% |