FBNTX vs. FXNAX

Last updated Apr 1, 2026

Compare and contrast key facts about Fidelity Advisor Short-Term Bond Fund Class M (FBNTX) and Fidelity U.S. Bond Index Fund (FXNAX).

FBNTX is managed by Fidelity. It was launched on Jul 12, 2016. FXNAX is managed by Fidelity.

Performance

FBNTX vs. FXNAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Advisor Short-Term Bond Fund Class M (FBNTX) and Fidelity U.S. Bond Index Fund (FXNAX). The values are adjusted to include any dividend payments, if applicable.

FBNTX vs. FXNAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FBNTX Fidelity Advisor Short-Term Bond Fund Class M	-0.11%	5.14%	4.62%	4.72%	-4.00%	-1.08%	3.60%	3.98%	0.96%	0.95%
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, FBNTX achieves a -0.11% return, which is significantly higher than FXNAX's -0.45% return.

FBNTX

• 1D: 0.24%
• 1M: -0.94%
• YTD: -0.11%
• 6M: 0.84%
• 1Y: 3.38%
• 3Y*: 4.32%
• 5Y*: 1.91%
• 10Y*: —

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%

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

FBNTX vs. FXNAX - Expense Ratio Comparison

FBNTX has a 0.65% expense ratio, which is higher than FXNAX's 0.03% expense ratio.

FBNTX

Fidelity Advisor Short-Term Bond Fund Class M

FXNAX

Fidelity U.S. Bond Index Fund

Return for Risk

FBNTX vs. FXNAX — Risk / Return Rank

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

FBNTX

FBNTX Risk / Return Rank: 94
FBNTX Sharpe Ratio Rank: 92
FBNTX Sortino Ratio Rank: 96
FBNTX Omega Ratio Rank: 95
FBNTX Calmar Ratio Rank: 94
FBNTX Martin Ratio Rank: 95

FXNAX

FXNAX Risk / Return Rank: 56
FXNAX Sharpe Ratio Rank: 55
FXNAX Sortino Ratio Rank: 55
FXNAX Omega Ratio Rank: 40
FXNAX Calmar Ratio Rank: 78
FXNAX Martin Ratio Rank: 53

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.

FBNTX vs. FXNAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Short-Term Bond Fund Class M (FBNTX) 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.

	FBNTX	FXNAX	Difference
Sharpe ratio Return per unit of total volatility	1.97	0.99	+0.97
Sortino ratio Return per unit of downside risk	3.50	1.44	+2.06
Omega ratio Gain probability vs. loss probability	1.51	1.17	+0.33
Calmar ratio Return relative to maximum drawdown	3.09	1.81	+1.28
Martin ratio Return relative to average drawdown	12.74	5.15	+7.60
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FBNTX vs. FXNAX - Sharpe Ratio Comparison

The current FBNTX Sharpe Ratio is 1.97, which is higher than the FXNAX Sharpe Ratio of 0.99. The chart below compares the historical Sharpe Ratios of FBNTX and FXNAX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	FBNTX	FXNAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.97	0.99	+0.97
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.90	0.02	+0.88
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.31	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.03	0.45	+0.58

Correlation

The correlation between FBNTX and FXNAX is 0.69, 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

FBNTX vs. FXNAX - Dividend Comparison

FBNTX's dividend yield for the trailing twelve months is around 3.69%, more than FXNAX's 3.35% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FBNTX Fidelity Advisor Short-Term Bond Fund Class M	3.69%	4.05%	3.79%	2.53%	0.67%	0.87%	2.51%	1.92%	1.54%	1.06%	0.40%	0.00%
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

FBNTX vs. FXNAX - Drawdown Comparison

The maximum FBNTX drawdown since its inception was -6.64%, smaller than the maximum FXNAX drawdown of -19.51%. Use the drawdown chart below to compare losses from any high point for FBNTX and FXNAX.

Drawdown Indicators

	FBNTX	FXNAX	Difference
Max Drawdown Largest peak-to-trough decline	-6.64%	-19.51%	+12.87%
Max Drawdown (1Y) Largest decline over 1 year	-1.29%	-2.71%	+1.42%
Max Drawdown (5Y) Largest decline over 5 years	-6.42%	-18.54%	+12.12%
Max Drawdown (10Y) Largest decline over 10 years	—	-19.51%	—
Current Drawdown Current decline from peak	-0.94%	-3.72%	+2.78%
Average Drawdown Average peak-to-trough decline	-1.03%	-3.87%	+2.84%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.31%	0.95%	-0.64%

Volatility

FBNTX vs. FXNAX - Volatility Comparison

The current volatility for Fidelity Advisor Short-Term Bond Fund Class M (FBNTX) is 0.60%, while Fidelity U.S. Bond Index Fund (FXNAX) has a volatility of 1.57%. This indicates that FBNTX 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

	FBNTX	FXNAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.60%	1.57%	-0.97%
Volatility (6M) Calculated over the trailing 6-month period	1.26%	2.58%	-1.32%
Volatility (1Y) Calculated over the trailing 1-year period	1.97%	4.35%	-2.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.14%	6.04%	-3.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.82%	4.99%	-3.17%