FXNAX vs. FUAMX
FXNAX (Fidelity U.S. Bond Index Fund) and FUAMX (Fidelity Intermediate Treasury Bond Index Fund) are both mutual funds - FXNAX is a Total Bond Market fund tracking the Bloomberg U.S. Aggregate Bond Index, while FUAMX is a Government Bonds fund managed by Fidelity. Over the past 5 years, FXNAX returned -0.49%/yr vs -0.99%/yr for FUAMX. Their correlation of 0.94 means they have usually moved in the same direction. FXNAX charges 0.03%/yr vs 0.03%/yr for FUAMX.
Performance
FXNAX vs. FUAMX - Performance Comparison
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Returns By Period
In the year-to-date period, FXNAX achieves a -0.63% return, which is significantly higher than FUAMX's -1.10% return.
FXNAX
- 1D
- 0.10%
- 1M
- -1.25%
- 6M
- -0.85%
- YTD
- -0.63%
- 1Y
- 1.77%
- 3Y*
- 3.69%
- 5Y*
- -0.49%
- 10Y*
- 1.25%
- ALL TIME*
- 1.96%
FUAMX
- 1D
- 0.10%
- 1M
- -1.03%
- 6M
- -0.99%
- YTD
- -1.10%
- 1Y
- 0.87%
- 3Y*
- 3.28%
- 5Y*
- -0.99%
- 10Y*
- —
- ALL TIME*
- 1.16%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $0.00 | $0.00 | $0.00 | |
| $0.00 | $0.00 | $0.00 |
FXNAX vs. FUAMX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FXNAX Fidelity U.S. Bond Index Fund | -0.63% | 7.14% | 1.35% | 5.82% | -13.55% | -2.10% | 7.63% | 8.50% | 0.04% | 0.38% |
FUAMX Fidelity Intermediate Treasury Bond Index Fund | -1.10% | 8.00% | 0.40% | 4.07% | -13.06% | -3.19% | 8.86% | 7.25% | 1.25% | -0.35% |
Correlation
The correlation between FXNAX and FUAMX is 0.94, meaning they have usually moved in the same direction, including during past declines.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.94 |
Correlation (3Y) Balances recent behavior with more history. | 0.96 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.97 |
Correlation (All Time) Calculated using the full available price history since Oct 19, 2017 | 0.94 |
The correlation between FXNAX and FUAMX has been stable across timeframes, ranging from 0.94 to 0.97 - a consistent structural relationship.
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Return for Risk
FXNAX vs. FUAMX — Risk / Return Rank
FXNAX
FUAMX
FXNAX vs. FUAMX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity U.S. Bond Index Fund (FXNAX) and Fidelity Intermediate Treasury Bond Index Fund (FUAMX). 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.
| FXNAX | FUAMX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.23 | ||
| Sortino ratioReturn per unit of downside risk | +0.32 | ||
| Omega ratioGain probability vs. loss probability | 1.14 | 1.10 | +0.04 |
| Calmar ratioReturn relative to maximum drawdown | 1.01 | 0.62 | +0.39 |
| Martin ratioReturn relative to average drawdown | 2.55 | 1.43 | +1.12 |
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Drawdowns
FXNAX vs. FUAMX - Drawdown Comparison
The maximum FXNAX drawdown since its inception was -19.51%, roughly equal to the maximum FUAMX drawdown of -20.25%. Use the drawdown chart below to compare losses from any high point for FXNAX and FUAMX.
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Drawdown Indicators
| FXNAX | FUAMX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.51% | -20.25% | +0.74% |
Max Drawdown (1Y)Largest decline over 1 year | -2.94% | -3.72% | +0.78% |
Max Drawdown (3Y)Largest decline over 3 years | -5.11% | -5.83% | +0.72% |
Max Drawdown (5Y)Largest decline over 5 years | -18.54% | -18.27% | -0.27% |
Max Drawdown (10Y)Largest decline over 10 years | -19.51% | — | — |
Current DrawdownCurrent decline from peak | -3.89% | -7.47% | +3.58% |
Average DrawdownAverage peak-to-trough decline | -3.86% | -7.31% | +3.45% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.17% | 1.62% | -0.45% |
Volatility
FXNAX vs. FUAMX - Volatility Comparison
Fidelity U.S. Bond Index Fund (FXNAX) and Fidelity Intermediate Treasury Bond Index Fund (FUAMX) have volatilities of 0.99% and 1.04%, 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
| FXNAX | FUAMX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.99% | 1.04% | -0.05% |
Volatility (6M)Calculated over the trailing 6-month period | 3.02% | 3.30% | -0.28% |
Volatility (1Y)Calculated over the trailing 1-year period | 3.85% | 4.22% | -0.37% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.07% | 6.63% | -0.56% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.01% | 5.82% | -0.81% |
FXNAX vs. FUAMX - Expense Ratio Comparison
FXNAX has a 0.03% expense ratio, which is lower than FUAMX's 0.03% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
FXNAX vs. FUAMX - Dividend Comparison
FXNAX's dividend yield for the trailing twelve months is around 3.46%, less than FUAMX's 3.53% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FUAMX Fidelity Intermediate Treasury Bond Index Fund | 3.53% | 3.52% | 3.58% | 2.19% | 1.24% | 1.76% | 2.90% | 2.16% | 2.23% | 0.49% | 0.00% | 0.00% |
FXNAX Fidelity U.S. Bond Index Fund | 3.46% | 3.58% | 3.40% | 3.15% | 1.81% | 1.74% | 2.92% | 2.68% | 2.74% | 2.57% | 2.76% | 2.52% |
Frequently Asked Questions
With a correlation of 0.94, FXNAX and FUAMX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
FUAMX has higher volatility (1.04%) compared to FXNAX (0.99%). In terms of maximum drawdown, FXNAX dropped -19.51% vs FUAMX's -20.25%.
FXNAX currently has the higher Sharpe Ratio (0.78 vs 0.55), 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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