MFBFX vs. FCBFX

Last updated Apr 2, 2026

Compare and contrast key facts about MFS Corporate Bond Fund (MFBFX) and Fidelity Corporate Bond Fund (FCBFX).

MFBFX is managed by MFS. It was launched on May 8, 1974. FCBFX is managed by Fidelity. It was launched on May 4, 2010.

Performance

MFBFX vs. FCBFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Corporate Bond Fund (MFBFX) and Fidelity Corporate Bond Fund (FCBFX). The values are adjusted to include any dividend payments, if applicable.

MFBFX vs. FCBFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MFBFX MFS Corporate Bond Fund	-0.85%	7.35%	2.03%	8.09%	-17.27%	-1.47%	11.01%	14.43%	-3.19%	6.08%
FCBFX Fidelity Corporate Bond Fund	-0.92%	7.86%	2.82%	8.82%	-17.11%	-1.59%	10.59%	14.48%	-2.56%	6.83%

Returns By Period

In the year-to-date period, MFBFX achieves a -0.85% return, which is significantly higher than FCBFX's -0.92% return. Over the past 10 years, MFBFX has underperformed FCBFX with an annualized return of 2.43%, while FCBFX has yielded a comparatively higher 2.87% annualized return.

MFBFX

• 1D: 0.41%
• 1M: -1.83%
• YTD: -0.85%
• 6M: -0.43%
• 1Y: 3.87%
• 3Y*: 4.10%
• 5Y*: -0.04%
• 10Y*: 2.43%

FCBFX

• 1D: 0.28%
• 1M: -1.94%
• YTD: -0.92%
• 6M: -0.32%
• 1Y: 4.08%
• 3Y*: 4.92%
• 5Y*: 0.40%
• 10Y*: 2.87%

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

MFBFX vs. FCBFX - Expense Ratio Comparison

MFBFX has a 0.76% expense ratio, which is higher than FCBFX's 0.44% expense ratio.

MFBFX

MFS Corporate Bond Fund

FCBFX

Fidelity Corporate Bond Fund

Return for Risk

MFBFX vs. FCBFX — Risk / Return Rank

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

MFBFX

MFBFX Risk / Return Rank: 40
MFBFX Sharpe Ratio Rank: 40
MFBFX Sortino Ratio Rank: 36
MFBFX Omega Ratio Rank: 29
MFBFX Calmar Ratio Rank: 56
MFBFX Martin Ratio Rank: 42

FCBFX

FCBFX Risk / Return Rank: 44
FCBFX Sharpe Ratio Rank: 43
FCBFX Sortino Ratio Rank: 39
FCBFX Omega Ratio Rank: 31
FCBFX Calmar Ratio Rank: 61
FCBFX Martin Ratio Rank: 45

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.

MFBFX vs. FCBFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Corporate Bond Fund (MFBFX) and Fidelity Corporate Bond Fund (FCBFX). 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.

	MFBFX	FCBFX	Difference
Sharpe ratio Return per unit of total volatility	0.91	0.92	-0.02
Sortino ratio Return per unit of downside risk	1.28	1.29	-0.02
Omega ratio Gain probability vs. loss probability	1.16	1.16	0.00
Calmar ratio Return relative to maximum drawdown	1.45	1.49	-0.04
Martin ratio Return relative to average drawdown	4.70	4.74	-0.04
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MFBFX vs. FCBFX - Sharpe Ratio Comparison

The current MFBFX Sharpe Ratio is 0.91, which is comparable to the FCBFX Sharpe Ratio of 0.92. The chart below compares the historical Sharpe Ratios of MFBFX and FCBFX, 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

	MFBFX	FCBFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.91	0.92	-0.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.01	0.06	-0.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.43	0.48	-0.06
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.70	-0.22

Correlation

The correlation between MFBFX and FCBFX is 0.93, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

MFBFX vs. FCBFX - Dividend Comparison

MFBFX's dividend yield for the trailing twelve months is around 4.25%, more than FCBFX's 3.84% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MFBFX MFS Corporate Bond Fund	4.25%	4.54%	3.74%	3.16%	2.46%	5.61%	3.47%	3.01%	3.15%	3.07%	3.27%	4.16%
FCBFX Fidelity Corporate Bond Fund	3.84%	4.11%	3.95%	3.74%	2.53%	2.82%	3.19%	3.28%	3.65%	3.16%	3.55%	3.01%

Drawdowns

MFBFX vs. FCBFX - Drawdown Comparison

The maximum MFBFX drawdown since its inception was -29.78%, which is greater than FCBFX's maximum drawdown of -23.23%. Use the drawdown chart below to compare losses from any high point for MFBFX and FCBFX.

Drawdown Indicators

	MFBFX	FCBFX	Difference
Max Drawdown Largest peak-to-trough decline	-29.78%	-23.23%	-6.55%
Max Drawdown (1Y) Largest decline over 1 year	-3.23%	-3.31%	+0.08%
Max Drawdown (5Y) Largest decline over 5 years	-23.44%	-23.21%	-0.23%
Max Drawdown (10Y) Largest decline over 10 years	-23.44%	-23.23%	-0.21%
Current Drawdown Current decline from peak	-4.37%	-2.48%	-1.89%
Average Drawdown Average peak-to-trough decline	-6.20%	-4.00%	-2.20%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.00%	1.04%	-0.04%

Volatility

MFBFX vs. FCBFX - Volatility Comparison

MFS Corporate Bond Fund (MFBFX) and Fidelity Corporate Bond Fund (FCBFX) have volatilities of 1.76% and 1.84%, 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

	MFBFX	FCBFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.76%	1.84%	-0.08%
Volatility (6M) Calculated over the trailing 6-month period	2.72%	2.85%	-0.13%
Volatility (1Y) Calculated over the trailing 1-year period	4.59%	4.78%	-0.19%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.38%	6.68%	-0.30%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.72%	5.94%	-0.22%