MEMAX vs. COBYX
Compare and contrast key facts about MFS Emerging Markets Equity Fund (MEMAX) and The Cook & Bynum Fund (COBYX).
MEMAX is managed by MFS. It was launched on Oct 23, 1995. COBYX is managed by Cook & Bynum. It was launched on Jun 30, 2009.
Performance
MEMAX vs. COBYX - Performance Comparison
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MEMAX vs. COBYX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MEMAX MFS Emerging Markets Equity Fund | -1.90% | 33.44% | 10.96% | 10.89% | -20.10% | -6.98% | 10.17% | 19.81% | -14.02% | 37.38% |
COBYX The Cook & Bynum Fund | 1.14% | 20.50% | -10.32% | 16.73% | 9.28% | 9.05% | -10.97% | 9.40% | -13.40% | 15.12% |
Returns By Period
In the year-to-date period, MEMAX achieves a -1.90% return, which is significantly lower than COBYX's 1.14% return. Over the past 10 years, MEMAX has outperformed COBYX with an annualized return of 7.18%, while COBYX has yielded a comparatively lower 3.74% annualized return.
MEMAX
- 1D
- -0.59%
- 1M
- -11.30%
- YTD
- -1.90%
- 6M
- 2.48%
- 1Y
- 24.93%
- 3Y*
- 14.73%
- 5Y*
- 3.13%
- 10Y*
- 7.18%
COBYX
- 1D
- 0.85%
- 1M
- -7.34%
- YTD
- 1.14%
- 6M
- 5.27%
- 1Y
- 6.45%
- 3Y*
- 6.41%
- 5Y*
- 7.53%
- 10Y*
- 3.74%
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MEMAX vs. COBYX - Expense Ratio Comparison
MEMAX has a 1.31% expense ratio, which is lower than COBYX's 1.49% expense ratio.
Return for Risk
MEMAX vs. COBYX — Risk / Return Rank
MEMAX
COBYX
MEMAX vs. COBYX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for MFS Emerging Markets Equity Fund (MEMAX) and The Cook & Bynum Fund (COBYX). 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.
| MEMAX | COBYX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.57 | 0.34 | +1.23 |
Sortino ratioReturn per unit of downside risk | 2.06 | 0.55 | +1.52 |
Omega ratioGain probability vs. loss probability | 1.30 | 1.08 | +0.22 |
Calmar ratioReturn relative to maximum drawdown | 1.82 | 0.83 | +0.99 |
Martin ratioReturn relative to average drawdown | 7.18 | 2.50 | +4.68 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| MEMAX | COBYX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.57 | 0.34 | +1.23 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.20 | 0.55 | -0.35 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.44 | 0.28 | +0.16 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.30 | 0.34 | -0.04 |
Correlation
The correlation between MEMAX and COBYX is 0.49, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
MEMAX vs. COBYX - Dividend Comparison
MEMAX's dividend yield for the trailing twelve months is around 2.52%, more than COBYX's 1.17% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
MEMAX MFS Emerging Markets Equity Fund | 2.52% | 2.47% | 2.41% | 2.48% | 0.99% | 1.97% | 0.53% | 1.64% | 0.47% | 0.09% | 0.54% | 0.14% |
COBYX The Cook & Bynum Fund | 1.17% | 1.18% | 0.00% | 1.01% | 1.16% | 2.18% | 0.32% | 0.69% | 12.60% | 1.88% | 5.09% | 0.00% |
Drawdowns
MEMAX vs. COBYX - Drawdown Comparison
The maximum MEMAX drawdown since its inception was -67.04%, which is greater than COBYX's maximum drawdown of -34.18%. Use the drawdown chart below to compare losses from any high point for MEMAX and COBYX.
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Drawdown Indicators
| MEMAX | COBYX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -67.04% | -34.18% | -32.86% |
Max Drawdown (1Y)Largest decline over 1 year | -12.27% | -8.95% | -3.32% |
Max Drawdown (5Y)Largest decline over 5 years | -41.01% | -17.10% | -23.91% |
Max Drawdown (10Y)Largest decline over 10 years | -42.32% | -34.18% | -8.14% |
Current DrawdownCurrent decline from peak | -12.27% | -7.92% | -4.35% |
Average DrawdownAverage peak-to-trough decline | -19.79% | -6.86% | -12.93% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.11% | 2.96% | +0.15% |
Volatility
MEMAX vs. COBYX - Volatility Comparison
MFS Emerging Markets Equity Fund (MEMAX) has a higher volatility of 6.57% compared to The Cook & Bynum Fund (COBYX) at 4.99%. This indicates that MEMAX's price experiences larger fluctuations and is considered to be riskier than COBYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MEMAX | COBYX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.57% | 4.99% | +1.58% |
Volatility (6M)Calculated over the trailing 6-month period | 10.67% | 8.27% | +2.40% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.53% | 14.50% | +1.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 15.69% | 13.96% | +1.73% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 16.51% | 13.54% | +2.97% |