MEIIX vs. YAFFX

Last updated Jun 3, 2026

MEIIX (MFS Value Fund Class I) and YAFFX (AMG Yacktman Focused Fund) are both Large Cap Value Equities funds. Over the past 10 years, MEIIX returned 9.79%/yr vs 12.94%/yr for YAFFX. A 0.78 correlation means they provide meaningful diversification when combined. MEIIX charges 0.55%/yr vs 1.25%/yr for YAFFX.

Performance

MEIIX vs. YAFFX - Performance Comparison

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

Returns By Period

In the year-to-date period, MEIIX achieves a 3.85% return, which is significantly lower than YAFFX's 31.39% return. Over the past 10 years, MEIIX has underperformed YAFFX with an annualized return of 9.79%, while YAFFX has yielded a comparatively higher 12.94% annualized return.

MEIIX

• 1D: -0.65%
• 1M: -0.99%
• YTD: 3.85%
• 6M: 6.13%
• 1Y: 12.56%
• 3Y*: 12.98%
• 5Y*: 7.63%
• 10Y*: 9.79%

YAFFX

• 1D: 3.61%
• 1M: 10.56%
• YTD: 31.39%
• 6M: 15.83%
• 1Y: 29.44%
• 3Y*: 17.95%
• 5Y*: 10.49%
• 10Y*: 12.94%

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

MEIIX vs. YAFFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MEIIX MFS Value Fund Class I	3.85%	13.26%	11.86%	8.21%	-6.02%	25.43%	3.99%	30.04%	-9.90%	17.20%
YAFFX AMG Yacktman Focused Fund	31.39%	3.89%	9.30%	16.53%	-8.20%	16.48%	17.22%	19.21%	2.99%	20.07%

Correlation

The correlation between MEIIX and YAFFX is 0.34, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.34
Correlation (3Y) Calculated over the trailing 3-year period	0.60
Correlation (5Y) Calculated over the trailing 5-year period	0.72
Correlation (10Y) Calculated over the trailing 10-year period	0.75
Correlation (All Time) Calculated using the full available price history since May 1, 1997	0.78

Over the past year, the correlation between MEIIX and YAFFX has dropped to 0.34 - well below their long-term average of 0.78, suggesting their price drivers have been diverging.

Return for Risk

MEIIX vs. YAFFX — Risk / Return Rank

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

MEIIX

MEIIX Risk / Return Rank: 20
MEIIX Sharpe Ratio Rank: 17
MEIIX Sortino Ratio Rank: 17
MEIIX Omega Ratio Rank: 16
MEIIX Calmar Ratio Rank: 25
MEIIX Martin Ratio Rank: 27

YAFFX

YAFFX Risk / Return Rank: 26
YAFFX Sharpe Ratio Rank: 22
YAFFX Sortino Ratio Rank: 13
YAFFX Omega Ratio Rank: 47
YAFFX Calmar Ratio Rank: 21
YAFFX Martin Ratio Rank: 25

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. YAFFX - Risk-Adjusted Trends Comparison

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

	MEIIX	YAFFX	Difference
Sharpe ratio Return per unit of total volatility	1.23	1.38	-0.15
Sortino ratio Return per unit of downside risk	1.79	1.51	+0.28
Omega ratio Gain probability vs. loss probability	1.22	1.37	-0.16
Calmar ratio Return relative to maximum drawdown	1.92	1.76	+0.16
Martin ratio Return relative to average drawdown	6.68	6.40	+0.28
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MEIIX vs. YAFFX - Sharpe Ratio Comparison

The current MEIIX Sharpe Ratio is 1.23, which is comparable to the YAFFX Sharpe Ratio of 1.38. The chart below compares the historical Sharpe Ratios of MEIIX and YAFFX, 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

	MEIIX	YAFFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.23	1.38	-0.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.55	0.58	-0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.59	0.79	-0.19
Sharpe Ratio (All Time) Calculated using the full available price history	0.56	0.62	-0.06

Drawdowns

MEIIX vs. YAFFX - Drawdown Comparison

The maximum MEIIX drawdown since its inception was -52.64%, which is greater than YAFFX's maximum drawdown of -43.80%. Use the drawdown chart below to compare losses from any high point for MEIIX and YAFFX.

Drawdown Indicators

	MEIIX	YAFFX	Difference
Max Drawdown Largest peak-to-trough decline	-52.64%	-43.80%	-8.84%
Max Drawdown (1Y) Largest decline over 1 year	-6.76%	-17.08%	+10.32%
Max Drawdown (3Y) Largest decline over 3 years	-13.19%	-18.88%	+5.69%
Max Drawdown (5Y) Largest decline over 5 years	-17.58%	-21.31%	+3.73%
Max Drawdown (10Y) Largest decline over 10 years	-36.70%	-30.62%	-6.08%
Current Drawdown Current decline from peak	-2.41%	0.00%	-2.41%
Average Drawdown Average peak-to-trough decline	-6.55%	-6.21%	-0.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.95%	4.70%	-2.75%

Volatility

MEIIX vs. YAFFX - Volatility Comparison

The current volatility for MFS Value Fund Class I (MEIIX) is 2.39%, while AMG Yacktman Focused Fund (YAFFX) has a volatility of 6.09%. This indicates that MEIIX experiences smaller price fluctuations and is considered to be less risky than YAFFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MEIIX	YAFFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.39%	6.09%	-3.70%
Volatility (6M) Calculated over the trailing 6-month period	7.75%	22.30%	-14.55%
Volatility (1Y) Calculated over the trailing 1-year period	10.38%	22.23%	-11.85%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.92%	18.09%	-4.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.55%	16.53%	+0.02%

MEIIX vs. YAFFX - Expense Ratio Comparison

MEIIX has a 0.55% expense ratio, which is lower than YAFFX's 1.25% expense ratio.

Dividends

MEIIX vs. YAFFX - Dividend Comparison

MEIIX's dividend yield for the trailing twelve months is around 9.36%, while YAFFX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MEIIX MFS Value Fund Class I	9.36%	9.52%	9.30%	8.41%	7.58%	3.32%	2.63%	3.17%	3.62%	4.04%	2.91%	5.97%
YAFFX AMG Yacktman Focused Fund	0.00%	0.00%	18.44%	4.42%	7.60%	4.70%	11.87%	15.84%	22.15%	11.82%	11.81%	24.36%

Frequently Asked Questions

Can I hold both MEIIX and YAFFX in my portfolio?

MEIIX and YAFFX have a correlation of 0.34, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MEIIX or YAFFX?

YAFFX has higher volatility (6.09%) compared to MEIIX (2.39%). In terms of maximum drawdown, MEIIX dropped -52.64% vs YAFFX's -43.80%.

Which has better risk-adjusted returns?

YAFFX currently has the higher Sharpe Ratio (1.38 vs 1.23), 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.