FSIGX vs. FBNDX

Last updated Jun 3, 2026

FSIGX (Fidelity Series Investment Grade Bond Fund) and FBNDX (Fidelity Investment Grade Bond Fund) are both mutual funds - FSIGX is a fund fund managed by Fidelity, while FBNDX is a Total Bond Market fund managed by Fidelity. Over the past 10 years, FSIGX returned 2.39%/yr vs 2.12%/yr for FBNDX. Their correlation of 0.95 suggests significant overlap in exposure.

Performance

FSIGX vs. FBNDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Series Investment Grade Bond Fund (FSIGX) and Fidelity Investment Grade Bond Fund (FBNDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FSIGX achieves a 0.47% return, which is significantly higher than FBNDX's 0.34% return. Over the past 10 years, FSIGX has outperformed FBNDX with an annualized return of 2.39%, while FBNDX has yielded a comparatively lower 2.12% annualized return.

FSIGX

• 1D: -0.20%
• 1M: 0.07%
• YTD: 0.47%
• 6M: 0.43%
• 1Y: 5.50%
• 3Y*: 4.60%
• 5Y*: 0.63%
• 10Y*: 2.39%

FBNDX

• 1D: 0.00%
• 1M: 0.05%
• YTD: 0.34%
• 6M: 0.29%
• 1Y: 5.13%
• 3Y*: 4.08%
• 5Y*: 0.15%
• 10Y*: 2.12%

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

FSIGX vs. FBNDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSIGX Fidelity Series Investment Grade Bond Fund	0.47%	7.65%	1.79%	6.82%	-13.30%	-0.67%	9.71%	9.75%	-0.15%	4.39%
FBNDX Fidelity Investment Grade Bond Fund	0.34%	7.37%	0.93%	6.51%	-14.04%	-1.13%	9.79%	9.82%	-0.35%	3.92%

Correlation

The correlation between FSIGX and FBNDX is 0.95 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.98
Correlation (10Y) Calculated over the trailing 10-year period	0.96
Correlation (All Time) Calculated using the full available price history since Oct 16, 2008	0.95

The correlation between FSIGX and FBNDX has been stable across timeframes, ranging from 0.95 to 0.98 - a consistent structural relationship.

Return for Risk

FSIGX vs. FBNDX — Risk / Return Rank

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

FSIGX

FSIGX Risk / Return Rank: 21
FSIGX Sharpe Ratio Rank: 19
FSIGX Sortino Ratio Rank: 20
FSIGX Omega Ratio Rank: 18
FSIGX Calmar Ratio Rank: 26
FSIGX Martin Ratio Rank: 21

FBNDX

FBNDX Risk / Return Rank: 18
FBNDX Sharpe Ratio Rank: 16
FBNDX Sortino Ratio Rank: 17
FBNDX Omega Ratio Rank: 15
FBNDX Calmar Ratio Rank: 22
FBNDX Martin Ratio Rank: 20

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.

FSIGX vs. FBNDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Series Investment Grade Bond Fund (FSIGX) and Fidelity Investment Grade Bond Fund (FBNDX). 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.

	FSIGX	FBNDX	Difference
Sharpe ratio Return per unit of total volatility	1.28	1.18	+0.10
Sortino ratio Return per unit of downside risk	1.92	1.76	+0.16
Omega ratio Gain probability vs. loss probability	1.23	1.21	+0.02
Calmar ratio Return relative to maximum drawdown	1.94	1.81	+0.12
Martin ratio Return relative to average drawdown	5.72	5.47	+0.25
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FSIGX vs. FBNDX - Sharpe Ratio Comparison

The current FSIGX Sharpe Ratio is 1.28, which is comparable to the FBNDX Sharpe Ratio of 1.18. The chart below compares the historical Sharpe Ratios of FSIGX and FBNDX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	FSIGX	FBNDX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.28	1.18	+0.10
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.10	0.02	+0.08
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.48	0.42	+0.05
Sharpe Ratio (All Time) Calculated using the full available price history	0.86	0.53	+0.34

Drawdowns

FSIGX vs. FBNDX - Drawdown Comparison

The maximum FSIGX drawdown since its inception was -18.22%, smaller than the maximum FBNDX drawdown of -42.76%. Use the drawdown chart below to compare losses from any high point for FSIGX and FBNDX.

Drawdown Indicators

	FSIGX	FBNDX	Difference
Max Drawdown Largest peak-to-trough decline	-18.22%	-42.76%	+24.54%
Max Drawdown (1Y) Largest decline over 1 year	-2.99%	-3.02%	+0.03%
Max Drawdown (3Y) Largest decline over 3 years	-6.11%	-6.09%	-0.02%
Max Drawdown (5Y) Largest decline over 5 years	-18.22%	-18.74%	+0.52%
Max Drawdown (10Y) Largest decline over 10 years	-18.22%	-18.74%	+0.52%
Current Drawdown Current decline from peak	-1.55%	-1.62%	+0.07%
Average Drawdown Average peak-to-trough decline	-2.69%	-10.34%	+7.65%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.01%	1.00%	+0.01%

Volatility

FSIGX vs. FBNDX - Volatility Comparison

Fidelity Series Investment Grade Bond Fund (FSIGX) and Fidelity Investment Grade Bond Fund (FBNDX) have volatilities of 1.38% and 1.40%, 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.

Volatility by Period

	FSIGX	FBNDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.38%	1.40%	-0.02%
Volatility (6M) Calculated over the trailing 6-month period	2.86%	2.93%	-0.07%
Volatility (1Y) Calculated over the trailing 1-year period	4.08%	4.13%	-0.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.07%	6.03%	+0.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.03%	5.02%	+0.01%

Dividends

FSIGX vs. FBNDX - Dividend Comparison

FSIGX's dividend yield for the trailing twelve months is around 4.29%, more than FBNDX's 3.91% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FBNDX Fidelity Investment Grade Bond Fund	3.91%	3.87%	3.34%	3.56%	1.98%	1.34%	4.70%	2.75%	2.86%	2.18%	2.72%	2.66%
FSIGX Fidelity Series Investment Grade Bond Fund	4.29%	4.24%	4.01%	4.00%	2.37%	1.88%	6.32%	3.09%	3.20%	2.86%	4.32%	3.07%

Frequently Asked Questions

Can I hold both FSIGX and FBNDX in my portfolio?

With a correlation of 0.95, FSIGX and FBNDX 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.

Which is riskier, FSIGX or FBNDX?

FBNDX has higher volatility (1.40%) compared to FSIGX (1.38%). In terms of maximum drawdown, FSIGX dropped -18.22% vs FBNDX's -42.76%.

Which has better risk-adjusted returns?

FSIGX currently has the higher Sharpe Ratio (1.28 vs 1.18), 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.