LSYAX vs. MFIOX

Last updated Jul 17, 2026

LSYAX (Lord Abbett Short Duration High Yield Fund) and MFIOX (MFS Income Fund) are both mutual funds - LSYAX is a High Yield Bonds fund tracking the ICE BofA HY U.S. Corp, Cash Pay, BB-B 1-5 YR USD Index, while MFIOX is a Intermediate Core-Plus Bond fund managed by MFS. Over the past 5 years, LSYAX returned 4.49%/yr vs 0.34%/yr for MFIOX. At a 0.49 correlation, their price movements are largely independent. LSYAX charges 0.65%/yr vs 0.73%/yr for MFIOX.

Performance

LSYAX vs. MFIOX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Lord Abbett Short Duration High Yield Fund (LSYAX) and MFS Income Fund (MFIOX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LSYAX achieves a 2.37% return, which is significantly higher than MFIOX's 0.35% return.

LSYAX

• 1D: 0.10%
• 1M: -0.10%
• 6M: 1.95%
• YTD: 2.37%
• 1Y: 6.81%
• 3Y*: 8.07%
• 5Y*: 4.49%
• 10Y*: —

MFIOX

• 1D: 0.17%
• 1M: -0.44%
• 6M: 0.18%
• YTD: 0.35%
• 1Y: 4.61%
• 3Y*: 4.76%
• 5Y*: 0.34%
• 10Y*: 2.50%

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

LSYAX vs. MFIOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
LSYAX Lord Abbett Short Duration High Yield Fund	2.37%	7.50%	8.46%	10.60%	-7.21%	4.50%	14.22%
MFIOX MFS Income Fund	0.35%	7.37%	2.66%	7.46%	-14.14%	-0.28%	11.00%

Correlation

The correlation between LSYAX and MFIOX is 0.58, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.58
Correlation (3Y) Calculated over the trailing 3-year period	0.54
Correlation (5Y) Calculated over the trailing 5-year period	0.51
Correlation (All Time) Calculated using the full available price history since Apr 23, 2020	0.49

The correlation between LSYAX and MFIOX has been stable across timeframes, ranging from 0.49 to 0.58 - a consistent structural relationship.

Return for Risk

LSYAX vs. MFIOX — Risk / Return Rank

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

LSYAX

LSYAX Risk / Return Rank: 76
LSYAX Sharpe Ratio Rank: 72
LSYAX Sortino Ratio Rank: 87
LSYAX Omega Ratio Rank: 84
LSYAX Calmar Ratio Rank: 58
LSYAX Martin Ratio Rank: 80

MFIOX

MFIOX Risk / Return Rank: 34
MFIOX Sharpe Ratio Rank: 36
MFIOX Sortino Ratio Rank: 38
MFIOX Omega Ratio Rank: 37
MFIOX Calmar Ratio Rank: 32
MFIOX Martin Ratio Rank: 28

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.

LSYAX vs. MFIOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Lord Abbett Short Duration High Yield Fund (LSYAX) and MFS Income Fund (MFIOX). 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.

	LSYAX	MFIOX	Difference
Sharpe ratio: Return per unit of total volatility	1.90	1.35	+0.55
Sortino ratio: Return per unit of downside risk	3.51	2.01	+1.50
Omega ratio: Gain probability vs. loss probability	1.45	1.25	+0.20
Calmar ratio: Return relative to maximum drawdown	2.37	1.71	+0.66
Martin ratio: Return relative to average drawdown	11.36	5.12	+6.24

LSYAX vs. MFIOX - Sharpe Ratio Comparison

The current LSYAX Sharpe Ratio is 1.90, which is higher than the MFIOX Sharpe Ratio of 1.35. The chart below compares the historical Sharpe Ratios of LSYAX and MFIOX, 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

LSYAX vs. MFIOX - Drawdown Comparison

The maximum LSYAX drawdown since its inception was -10.79%, smaller than the maximum MFIOX drawdown of -19.07%. Use the drawdown chart below to compare losses from any high point for LSYAX and MFIOX.

Drawdown Indicators

	LSYAX	MFIOX	Difference
Max Drawdown Largest peak-to-trough decline	-10.79%	-19.07%	+8.28%
Max Drawdown (1Y) Largest decline over 1 year	-2.84%	-2.81%	-0.03%
Max Drawdown (3Y) Largest decline over 3 years	-5.30%	-5.88%	+0.58%
Max Drawdown (5Y) Largest decline over 5 years	-10.79%	-19.07%	+8.28%
Max Drawdown (10Y) Largest decline over 10 years	—	-19.07%	—
Current Drawdown Current decline from peak	-0.31%	-1.24%	+0.93%
Average Drawdown Average peak-to-trough decline	-1.83%	-2.18%	+0.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.59%	0.94%	-0.35%

Volatility

LSYAX vs. MFIOX - Volatility Comparison

The current volatility for Lord Abbett Short Duration High Yield Fund (LSYAX) is 0.87%, while MFS Income Fund (MFIOX) has a volatility of 1.00%. This indicates that LSYAX experiences smaller price fluctuations and is considered to be less risky than MFIOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LSYAX	MFIOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.87%	1.00%	-0.13%
Volatility (6M) Calculated over the trailing 6-month period	2.87%	2.78%	+0.09%
Volatility (1Y) Calculated over the trailing 1-year period	3.54%	3.57%	-0.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	4.31%	5.52%	-1.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.18%	4.88%	-0.70%

LSYAX vs. MFIOX - Expense Ratio Comparison

LSYAX has a 0.65% expense ratio, which is lower than MFIOX's 0.73% expense ratio.

Dividends

LSYAX vs. MFIOX - Dividend Comparison

LSYAX's dividend yield for the trailing twelve months is around 7.89%, more than MFIOX's 4.75% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LSYAX Lord Abbett Short Duration High Yield Fund	7.89%	7.91%	8.01%	6.38%	4.86%	5.77%	4.64%	0.00%	0.00%	0.00%	0.00%	0.00%
MFIOX MFS Income Fund	4.75%	4.70%	5.04%	4.72%	2.24%	3.29%	2.80%	3.04%	3.07%	3.26%	3.61%	4.35%

Frequently Asked Questions

Can I hold both LSYAX and MFIOX in my portfolio?

LSYAX and MFIOX have a correlation of 0.58, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, LSYAX or MFIOX?

MFIOX has higher volatility (1.00%) compared to LSYAX (0.87%). In terms of maximum drawdown, LSYAX dropped -10.79% vs MFIOX's -19.07%.

Which has better risk-adjusted returns?

LSYAX currently has the higher Sharpe Ratio (1.90 vs 1.35), 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.