FSAHX vs. FXNAX

Last updated Jun 24, 2026

FSAHX (Fidelity Short Duration High Income Fund) and FXNAX (Fidelity U.S. Bond Index Fund) are both mutual funds - FSAHX is a High Yield Bonds fund managed by Fidelity, while FXNAX is a Total Bond Market fund tracking the Bloomberg U.S. Aggregate Bond Index. Over the past 10 years, FSAHX returned 4.61%/yr vs 1.44%/yr for FXNAX. At a 0.24 correlation, their price movements are largely independent. FSAHX charges 0.75%/yr vs 0.03%/yr for FXNAX.

Performance

FSAHX vs. FXNAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Short Duration High Income Fund (FSAHX) and Fidelity U.S. Bond Index Fund (FXNAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FSAHX achieves a 2.96% return, which is significantly higher than FXNAX's 0.11% return. Over the past 10 years, FSAHX has outperformed FXNAX with an annualized return of 4.61%, while FXNAX has yielded a comparatively lower 1.44% annualized return.

FSAHX

• 1D: 0.00%
• 1M: 0.61%
• YTD: 2.96%
• 6M: 3.47%
• 1Y: 8.55%
• 3Y*: 8.53%
• 5Y*: 4.43%
• 10Y*: 4.61%

FXNAX

• 1D: -0.29%
• 1M: 0.61%
• YTD: 0.11%
• 6M: 0.43%
• 1Y: 4.25%
• 3Y*: 3.88%
• 5Y*: -0.05%
• 10Y*: 1.44%

*Multi-year figures are annualized to reflect compound growth (CAGR)

FSAHX vs. FXNAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSAHX Fidelity Short Duration High Income Fund	2.96%	7.75%	7.74%	10.29%	-7.06%	2.78%	3.69%	9.32%	-1.24%	4.96%
FXNAX Fidelity U.S. Bond Index Fund	0.11%	7.14%	1.35%	5.82%	-13.55%	-2.10%	7.63%	8.50%	0.04%	3.50%

Correlation

The correlation between FSAHX and FXNAX is 0.45, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.45
Correlation (3Y) Calculated over the trailing 3-year period	0.50
Correlation (5Y) Calculated over the trailing 5-year period	0.44
Correlation (10Y) Calculated over the trailing 10-year period	0.30
Correlation (All Time) Calculated using the full available price history since Nov 19, 2013	0.24

Over the past year, FSAHX and FXNAX have become more correlated (0.45) than their long-term average of 0.24, meaning their price movements have been converging.

Return for Risk

FSAHX vs. FXNAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

FSAHX

FSAHX Risk / Return Rank: 95
FSAHX Sharpe Ratio Rank: 93
FSAHX Sortino Ratio Rank: 97
FSAHX Omega Ratio Rank: 95
FSAHX Calmar Ratio Rank: 93
FSAHX Martin Ratio Rank: 97

FXNAX

FXNAX Risk / Return Rank: 18
FXNAX Sharpe Ratio Rank: 18
FXNAX Sortino Ratio Rank: 20
FXNAX Omega Ratio Rank: 17
FXNAX Calmar Ratio Rank: 20
FXNAX Martin Ratio Rank: 18

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

FSAHX vs. FXNAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Short Duration High Income Fund (FSAHX) 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.

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.

	FSAHX	FXNAX	Difference
Sharpe ratio: Return per unit of total volatility	2.92	1.14	+1.77
Sortino ratio: Return per unit of downside risk	5.56	1.73	+3.83
Omega ratio: Gain probability vs. loss probability	1.74	1.20	+0.54
Calmar ratio: Return relative to maximum drawdown	4.89	1.52	+3.37
Martin ratio: Return relative to average drawdown	25.70	4.36	+21.34

FSAHX vs. FXNAX - Sharpe Ratio Comparison

The current FSAHX Sharpe Ratio is 2.92, which is higher than the FXNAX Sharpe Ratio of 1.14. The chart below compares the historical Sharpe Ratios of FSAHX and FXNAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

FSAHX vs. FXNAX - Drawdown Comparison

The maximum FSAHX drawdown since its inception was -16.77%, smaller than the maximum FXNAX drawdown of -19.51%. Use the drawdown chart below to compare losses from any high point for FSAHX and FXNAX.

Drawdown Indicators

	FSAHX	FXNAX	Difference
Max Drawdown Largest peak-to-trough decline	-16.77%	-19.51%	+2.74%
Max Drawdown (1Y) Largest decline over 1 year	-1.78%	-2.94%	+1.16%
Max Drawdown (3Y) Largest decline over 3 years	-3.30%	-6.16%	+2.86%
Max Drawdown (5Y) Largest decline over 5 years	-9.43%	-18.54%	+9.11%
Max Drawdown (10Y) Largest decline over 10 years	-16.77%	-19.51%	+2.74%
Current Drawdown Current decline from peak	-0.11%	-3.17%	+3.06%
Average Drawdown Average peak-to-trough decline	-1.54%	-3.86%	+2.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.34%	1.02%	-0.68%

Volatility

FSAHX vs. FXNAX - Volatility Comparison

The current volatility for Fidelity Short Duration High Income Fund (FSAHX) is 0.77%, while Fidelity U.S. Bond Index Fund (FXNAX) has a volatility of 1.16%. This indicates that FSAHX experiences smaller price fluctuations and is considered to be less risky than FXNAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSAHX	FXNAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.77%	1.16%	-0.39%
Volatility (6M) Calculated over the trailing 6-month period	2.26%	2.90%	-0.64%
Volatility (1Y) Calculated over the trailing 1-year period	2.99%	3.92%	-0.93%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.88%	6.08%	-2.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.25%	5.01%	-0.76%

FSAHX vs. FXNAX - Expense Ratio Comparison

FSAHX has a 0.75% expense ratio, which is higher than FXNAX's 0.03% expense ratio.

Dividends

FSAHX vs. FXNAX - Dividend Comparison

FSAHX's dividend yield for the trailing twelve months is around 7.29%, more than FXNAX's 3.72% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSAHX Fidelity Short Duration High Income Fund	7.29%	7.36%	6.08%	5.97%	3.26%	2.85%	3.19%	4.22%	4.52%	4.11%	4.73%	4.40%
FXNAX Fidelity U.S. Bond Index Fund	3.72%	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

Can I hold both FSAHX and FXNAX in my portfolio?

FSAHX and FXNAX have a correlation of 0.45, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FSAHX or FXNAX?

FXNAX has higher volatility (1.16%) compared to FSAHX (0.77%). In terms of maximum drawdown, FSAHX dropped -16.77% vs FXNAX's -19.51%.

Which has better risk-adjusted returns?

FSAHX currently has the higher Sharpe Ratio (2.92 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.