MVCKX vs. MIEIX

Last updated Jun 4, 2026

MVCKX (MFS Mid Cap Value Fund Class R6) and MIEIX (MFS International Equity Fund Class R6) are both mutual funds - MVCKX is a Mid Cap Value Equities fund actively managed by MFS, while MIEIX is a Foreign Large Cap Equities fund managed by MFS. Over the past 10 years, MVCKX returned 9.42%/yr vs 9.82%/yr for MIEIX. A 0.68 correlation means they provide meaningful diversification when combined. MVCKX charges 0.62%/yr vs 0.68%/yr for MIEIX.

Performance

MVCKX vs. MIEIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Mid Cap Value Fund Class R6 (MVCKX) and MFS International Equity Fund Class R6 (MIEIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MVCKX achieves a 9.02% return, which is significantly higher than MIEIX's 3.25% return. Both investments have delivered pretty close results over the past 10 years, with MVCKX having a 9.42% annualized return and MIEIX not far ahead at 9.82%.

MVCKX

• 1D: 1.07%
• 1M: 3.21%
• YTD: 9.02%
• 6M: 9.17%
• 1Y: 17.71%
• 3Y*: 11.48%
• 5Y*: 6.61%
• 10Y*: 9.42%

MIEIX

• 1D: 0.17%
• 1M: 3.66%
• YTD: 3.25%
• 6M: 5.80%
• 1Y: 10.30%
• 3Y*: 12.08%
• 5Y*: 7.26%
• 10Y*: 9.82%

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

MVCKX vs. MIEIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MVCKX MFS Mid Cap Value Fund Class R6	9.02%	6.47%	6.80%	12.92%	-8.62%	30.93%	4.40%	31.11%	-11.35%	13.83%
MIEIX MFS International Equity Fund Class R6	3.25%	23.22%	4.13%	19.06%	-14.82%	15.13%	11.11%	28.42%	-10.66%	28.01%

Correlation

The correlation between MVCKX and MIEIX is 0.64, 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	0.64
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.70
Correlation (10Y) Calculated over the trailing 10-year period	0.67
Correlation (All Time) Calculated using the full available price history since Jan 3, 2014	0.68

The correlation between MVCKX and MIEIX has been stable across timeframes, ranging from 0.64 to 0.70 - a consistent structural relationship.

Return for Risk

MVCKX vs. MIEIX — Risk / Return Rank

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

MVCKX

MVCKX Risk / Return Rank: 26
MVCKX Sharpe Ratio Rank: 24
MVCKX Sortino Ratio Rank: 26
MVCKX Omega Ratio Rank: 23
MVCKX Calmar Ratio Rank: 29
MVCKX Martin Ratio Rank: 30

MIEIX

MIEIX Risk / Return Rank: 9
MIEIX Sharpe Ratio Rank: 9
MIEIX Sortino Ratio Rank: 9
MIEIX Omega Ratio Rank: 9
MIEIX Calmar Ratio Rank: 8
MIEIX Martin Ratio Rank: 10

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.

MVCKX vs. MIEIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Mid Cap Value Fund Class R6 (MVCKX) and MFS International Equity Fund Class R6 (MIEIX). 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.

	MVCKX	MIEIX	Difference
Sharpe ratio: Return per unit of total volatility	1.41	0.73	+0.68
Sortino ratio: Return per unit of downside risk	2.10	1.11	+0.99
Omega ratio: Gain probability vs. loss probability	1.25	1.14	+0.11
Calmar ratio: Return relative to maximum drawdown	2.02	0.85	+1.17
Martin ratio: Return relative to average drawdown	6.92	3.00	+3.93
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MVCKX vs. MIEIX - Sharpe Ratio Comparison

The current MVCKX Sharpe Ratio is 1.41, which is higher than the MIEIX Sharpe Ratio of 0.73. The chart below compares the historical Sharpe Ratios of MVCKX and MIEIX, 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

	MVCKX	MIEIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.41	0.73	+0.68
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.38	0.48	-0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.49	0.62	-0.13
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.46	+0.02

Drawdowns

MVCKX vs. MIEIX - Drawdown Comparison

The maximum MVCKX drawdown since its inception was -42.75%, smaller than the maximum MIEIX drawdown of -53.13%. Use the drawdown chart below to compare losses from any high point for MVCKX and MIEIX.

Drawdown Indicators

	MVCKX	MIEIX	Difference
Max Drawdown Largest peak-to-trough decline	-42.75%	-53.13%	+10.38%
Max Drawdown (1Y) Largest decline over 1 year	-9.36%	-11.26%	+1.90%
Max Drawdown (3Y) Largest decline over 3 years	-25.96%	-13.43%	-12.53%
Max Drawdown (5Y) Largest decline over 5 years	-25.96%	-28.07%	+2.11%
Max Drawdown (10Y) Largest decline over 10 years	-42.75%	-31.35%	-11.40%
Current Drawdown Current decline from peak	-0.06%	-1.48%	+1.42%
Average Drawdown Average peak-to-trough decline	-5.27%	-8.98%	+3.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.72%	3.19%	-0.47%

Volatility

MVCKX vs. MIEIX - Volatility Comparison

MFS Mid Cap Value Fund Class R6 (MVCKX) and MFS International Equity Fund Class R6 (MIEIX) have volatilities of 3.55% and 3.45%, 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

	MVCKX	MIEIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.55%	3.45%	+0.10%
Volatility (6M) Calculated over the trailing 6-month period	9.73%	10.21%	-0.48%
Volatility (1Y) Calculated over the trailing 1-year period	13.42%	13.17%	+0.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.54%	15.34%	+2.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.40%	15.94%	+3.46%

MVCKX vs. MIEIX - Expense Ratio Comparison

MVCKX has a 0.62% expense ratio, which is lower than MIEIX's 0.68% expense ratio.

Dividends

MVCKX vs. MIEIX - Dividend Comparison

MVCKX's dividend yield for the trailing twelve months is around 7.59%, more than MIEIX's 2.59% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MIEIX MFS International Equity Fund Class R6	2.59%	2.68%	1.47%	1.67%	1.26%	5.40%	1.00%	3.12%	1.63%	1.85%	1.78%	1.71%
MVCKX MFS Mid Cap Value Fund Class R6	7.59%	8.27%	3.87%	3.00%	5.44%	5.88%	1.12%	2.32%	6.65%	3.68%	0.06%	4.87%

Frequently Asked Questions

Can I hold both MVCKX and MIEIX in my portfolio?

MVCKX and MIEIX have a correlation of 0.64, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MVCKX or MIEIX?

MVCKX has higher volatility (3.55%) compared to MIEIX (3.45%). In terms of maximum drawdown, MVCKX dropped -42.75% vs MIEIX's -53.13%.

Which has better risk-adjusted returns?

MVCKX currently has the higher Sharpe Ratio (1.41 vs 0.73), 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.