FSIAX vs. FNSOX

Last updated Apr 1, 2026

Compare and contrast key facts about Fidelity Advisor Strategic Income Fund Class M (FSIAX) and Fidelity Short-Term Bond Index Fund (FNSOX).

FSIAX is managed by Fidelity. It was launched on Oct 31, 1994. FNSOX is managed by Fidelity. It was launched on Oct 18, 2017.

Performance

FSIAX vs. FNSOX - Performance Comparison

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

FSIAX vs. FNSOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSIAX Fidelity Advisor Strategic Income Fund Class M	-0.88%	8.59%	5.03%	8.83%	-12.06%	3.22%	7.30%	10.76%	-2.93%	0.24%
FNSOX Fidelity Short-Term Bond Index Fund	-0.22%	6.01%	3.90%	4.90%	-5.76%	-1.25%	4.28%	4.95%	1.14%	-0.22%

Returns By Period

In the year-to-date period, FSIAX achieves a -0.88% return, which is significantly lower than FNSOX's -0.22% return.

FSIAX

• 1D: 0.00%
• 1M: -2.66%
• YTD: -0.88%
• 6M: 0.34%
• 1Y: 6.86%
• 3Y*: 6.07%
• 5Y*: 2.33%
• 10Y*: 3.85%

FNSOX

• 1D: 0.20%
• 1M: -1.18%
• YTD: -0.22%
• 6M: 0.91%
• 1Y: 3.69%
• 3Y*: 4.22%
• 5Y*: 1.56%
• 10Y*: —

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

FSIAX vs. FNSOX - Expense Ratio Comparison

FSIAX has a 0.96% expense ratio, which is higher than FNSOX's 0.03% expense ratio.

FSIAX

Fidelity Advisor Strategic Income Fund Class M

FNSOX

Fidelity Short-Term Bond Index Fund

Return for Risk

FSIAX vs. FNSOX — Risk / Return Rank

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

FSIAX

FSIAX Risk / Return Rank: 92
FSIAX Sharpe Ratio Rank: 93
FSIAX Sortino Ratio Rank: 93
FSIAX Omega Ratio Rank: 90
FSIAX Calmar Ratio Rank: 92
FSIAX Martin Ratio Rank: 91

FNSOX

FNSOX Risk / Return Rank: 91
FNSOX Sharpe Ratio Rank: 89
FNSOX Sortino Ratio Rank: 93
FNSOX Omega Ratio Rank: 88
FNSOX Calmar Ratio Rank: 93
FNSOX Martin Ratio Rank: 91

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.

FSIAX vs. FNSOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Strategic Income Fund Class M (FSIAX) and Fidelity Short-Term Bond Index Fund (FNSOX). 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.

	FSIAX	FNSOX	Difference
Sharpe ratio Return per unit of total volatility	2.04	1.82	+0.22
Sortino ratio Return per unit of downside risk	2.83	2.83	0.00
Omega ratio Gain probability vs. loss probability	1.41	1.37	+0.04
Calmar ratio Return relative to maximum drawdown	2.71	2.86	-0.15
Martin ratio Return relative to average drawdown	10.68	10.76	-0.08
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FSIAX vs. FNSOX - Sharpe Ratio Comparison

The current FSIAX Sharpe Ratio is 2.04, which is comparable to the FNSOX Sharpe Ratio of 1.82. The chart below compares the historical Sharpe Ratios of FSIAX and FNSOX, 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

	FSIAX	FNSOX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.04	1.82	+0.22
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.53	0.55	-0.02
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.87	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	1.53	0.83	+0.70

Correlation

The correlation between FSIAX and FNSOX is 0.55, 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

FSIAX vs. FNSOX - Dividend Comparison

FSIAX's dividend yield for the trailing twelve months is around 3.80%, more than FNSOX's 3.15% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSIAX Fidelity Advisor Strategic Income Fund Class M	3.80%	4.06%	3.21%	3.71%	2.71%	4.01%	4.32%	4.07%	3.51%	3.70%	3.49%	3.18%
FNSOX Fidelity Short-Term Bond Index Fund	3.15%	3.22%	2.80%	1.74%	0.81%	0.80%	1.54%	2.61%	2.04%	0.34%	0.00%	0.00%

Drawdowns

FSIAX vs. FNSOX - Drawdown Comparison

The maximum FSIAX drawdown since its inception was -17.81%, which is greater than FNSOX's maximum drawdown of -8.92%. Use the drawdown chart below to compare losses from any high point for FSIAX and FNSOX.

Drawdown Indicators

	FSIAX	FNSOX	Difference
Max Drawdown Largest peak-to-trough decline	-17.81%	-8.92%	-8.89%
Max Drawdown (1Y) Largest decline over 1 year	-2.66%	-1.47%	-1.19%
Max Drawdown (5Y) Largest decline over 5 years	-16.19%	-8.77%	-7.42%
Max Drawdown (10Y) Largest decline over 10 years	-16.19%	—	—
Current Drawdown Current decline from peak	-2.66%	-1.18%	-1.48%
Average Drawdown Average peak-to-trough decline	-1.84%	-1.75%	-0.09%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.67%	0.39%	+0.28%

Volatility

FSIAX vs. FNSOX - Volatility Comparison

Fidelity Advisor Strategic Income Fund Class M (FSIAX) has a higher volatility of 1.52% compared to Fidelity Short-Term Bond Index Fund (FNSOX) at 0.78%. This indicates that FSIAX's price experiences larger fluctuations and is considered to be riskier than FNSOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSIAX	FNSOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.52%	0.78%	+0.74%
Volatility (6M) Calculated over the trailing 6-month period	2.30%	1.37%	+0.93%
Volatility (1Y) Calculated over the trailing 1-year period	3.55%	2.21%	+1.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.42%	2.86%	+1.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.42%	2.48%	+1.94%