MEIIX vs. MEIKX

Last updated Jun 24, 2026

MEIIX (MFS Value Fund Class I) and MEIKX (MFS Value Fund) are both Large Cap Value Equities funds from MFS. Over the past 10 years, MEIIX returned 10.46%/yr vs 10.66%/yr for MEIKX. With a 1.00 correlation, they move nearly in lockstep. MEIIX charges 0.55%/yr vs 0.43%/yr for MEIKX.

Performance

MEIIX vs. MEIKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Value Fund Class I (MEIIX) and MFS Value Fund (MEIKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with MEIIX having a 6.89% return and MEIKX slightly higher at 6.94%. Both investments have delivered pretty close results over the past 10 years, with MEIIX having a 10.46% annualized return and MEIKX not far ahead at 10.66%.

MEIIX

• 1D: 0.38%
• 1M: 1.71%
• YTD: 6.89%
• 6M: 6.07%
• 1Y: 15.51%
• 3Y*: 13.74%
• 5Y*: 8.79%
• 10Y*: 10.46%

MEIKX

• 1D: 0.38%
• 1M: 1.71%
• YTD: 6.94%
• 6M: 6.13%
• 1Y: 15.63%
• 3Y*: 13.86%
• 5Y*: 8.90%
• 10Y*: 10.66%

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

MEIIX vs. MEIKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MEIIX MFS Value Fund Class I	6.89%	13.26%	11.86%	8.21%	-6.02%	25.43%	3.99%	30.04%	-9.90%	17.20%
MEIKX MFS Value Fund	6.94%	13.37%	11.98%	8.32%	-5.92%	25.59%	4.09%	30.18%	-9.81%	17.26%

Correlation

The correlation between MEIIX and MEIKX is 1.00 - 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	1.00
Correlation (3Y) Calculated over the trailing 3-year period	1.00
Correlation (5Y) Calculated over the trailing 5-year period	1.00
Correlation (10Y) Calculated over the trailing 10-year period	1.00
Correlation (All Time) Calculated using the full available price history since Apr 28, 2006	1.00

The correlation between MEIIX and MEIKX has been stable across timeframes, ranging from 1.00 to 1.00 - a consistent structural relationship.

Return for Risk

MEIIX vs. MEIKX — Risk / Return Rank

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

MEIIX

MEIIX Risk / Return Rank: 37
MEIIX Sharpe Ratio Rank: 34
MEIIX Sortino Ratio Rank: 34
MEIIX Omega Ratio Rank: 30
MEIIX Calmar Ratio Rank: 45
MEIIX Martin Ratio Rank: 42

MEIKX

MEIKX Risk / Return Rank: 37
MEIKX Sharpe Ratio Rank: 34
MEIKX Sortino Ratio Rank: 34
MEIKX Omega Ratio Rank: 31
MEIKX Calmar Ratio Rank: 45
MEIKX Martin Ratio Rank: 42

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.

MEIIX vs. MEIKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Value Fund Class I (MEIIX) and MFS Value Fund (MEIKX). 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.

	MEIIX	MEIKX	Difference
Sharpe ratio: Return per unit of total volatility	1.55	1.56	-0.01
Sortino ratio: Return per unit of downside risk	2.25	2.27	-0.02
Omega ratio: Gain probability vs. loss probability	1.27	1.27	0.00
Calmar ratio: Return relative to maximum drawdown	2.44	2.46	-0.02
Martin ratio: Return relative to average drawdown	8.41	8.50	-0.08

MEIIX vs. MEIKX - Sharpe Ratio Comparison

The current MEIIX Sharpe Ratio is 1.55, which is comparable to the MEIKX Sharpe Ratio of 1.56. The chart below compares the historical Sharpe Ratios of MEIIX and MEIKX, 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

MEIIX vs. MEIKX - Drawdown Comparison

The maximum MEIIX drawdown since its inception was -52.64%, smaller than the maximum MEIKX drawdown of -56.81%. Use the drawdown chart below to compare losses from any high point for MEIIX and MEIKX.

Drawdown Indicators

	MEIIX	MEIKX	Difference
Max Drawdown Largest peak-to-trough decline	-52.64%	-56.81%	+4.17%
Max Drawdown (1Y) Largest decline over 1 year	-6.76%	-6.76%	0.00%
Max Drawdown (3Y) Largest decline over 3 years	-13.19%	-13.15%	-0.04%
Max Drawdown (5Y) Largest decline over 5 years	-17.58%	-17.50%	-0.08%
Max Drawdown (10Y) Largest decline over 10 years	-36.70%	-36.68%	-0.02%
Current Drawdown Current decline from peak	-1.05%	-1.06%	+0.01%
Average Drawdown Average peak-to-trough decline	-6.54%	-9.42%	+2.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.96%	1.95%	+0.01%

Volatility

MEIIX vs. MEIKX - Volatility Comparison

MFS Value Fund Class I (MEIIX) and MFS Value Fund (MEIKX) have volatilities of 3.22% and 3.22%, 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

	MEIIX	MEIKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.22%	3.22%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	7.89%	7.89%	0.00%
Volatility (1Y) Calculated over the trailing 1-year period	10.66%	10.66%	0.00%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.93%	13.92%	+0.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.57%	16.57%	0.00%

MEIIX vs. MEIKX - Expense Ratio Comparison

MEIIX has a 0.55% expense ratio, which is higher than MEIKX's 0.43% expense ratio.

Dividends

MEIIX vs. MEIKX - Dividend Comparison

MEIIX's dividend yield for the trailing twelve months is around 9.09%, less than MEIKX's 9.28% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MEIIX MFS Value Fund Class I	9.09%	9.52%	9.30%	8.41%	7.58%	3.32%	2.63%	3.17%	3.62%	4.04%	2.91%	5.97%
MEIKX MFS Value Fund	9.28%	9.72%	9.49%	8.58%	7.77%	3.43%	2.75%	3.28%	3.76%	4.14%	3.84%	6.12%

Frequently Asked Questions

Can I hold both MEIIX and MEIKX in my portfolio?

With a correlation of 1.00, MEIIX and MEIKX 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, MEIIX or MEIKX?

MEIKX has higher volatility (3.22%) compared to MEIIX (3.22%). In terms of maximum drawdown, MEIIX dropped -52.64% vs MEIKX's -56.81%.

Which has better risk-adjusted returns?

MEIKX currently has the higher Sharpe Ratio (1.56 vs 1.55), 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.