BUFIX vs. MIEIX
Compare and contrast key facts about Buffalo International Fund (BUFIX) and MFS International Equity Fund Class R6 (MIEIX).
BUFIX is managed by Buffalo. It was launched on Sep 27, 2007. MIEIX is managed by MFS. It was launched on Jan 31, 1996.
Performance
BUFIX vs. MIEIX - Performance Comparison
Loading graphics...
BUFIX vs. MIEIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BUFIX Buffalo International Fund | -4.81% | 17.09% | -1.90% | 18.33% | -21.80% | 18.20% | 19.10% | 28.01% | -8.85% | 29.33% |
MIEIX MFS International Equity Fund Class R6 | -6.55% | 23.22% | 4.13% | 19.06% | -14.82% | 15.13% | 11.11% | 28.42% | -10.66% | 28.01% |
Returns By Period
In the year-to-date period, BUFIX achieves a -4.81% return, which is significantly higher than MIEIX's -6.55% return. Over the past 10 years, BUFIX has underperformed MIEIX with an annualized return of 8.16%, while MIEIX has yielded a comparatively higher 9.04% annualized return.
BUFIX
- 1D
- 0.09%
- 1M
- -12.77%
- YTD
- -4.81%
- 6M
- -3.94%
- 1Y
- 6.05%
- 3Y*
- 4.77%
- 5Y*
- 3.18%
- 10Y*
- 8.16%
MIEIX
- 1D
- 0.48%
- 1M
- -10.84%
- YTD
- -6.55%
- 6M
- -3.47%
- 1Y
- 8.02%
- 3Y*
- 9.09%
- 5Y*
- 6.72%
- 10Y*
- 9.04%
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
BUFIX vs. MIEIX - Expense Ratio Comparison
BUFIX has a 1.03% expense ratio, which is higher than MIEIX's 0.68% expense ratio.
Return for Risk
BUFIX vs. MIEIX — Risk / Return Rank
BUFIX
MIEIX
BUFIX vs. MIEIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Buffalo International Fund (BUFIX) 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.
| BUFIX | MIEIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.27 | 0.45 | -0.18 |
Sortino ratioReturn per unit of downside risk | 0.49 | 0.68 | -0.19 |
Omega ratioGain probability vs. loss probability | 1.07 | 1.10 | -0.03 |
Calmar ratioReturn relative to maximum drawdown | 0.28 | 0.52 | -0.24 |
Martin ratioReturn relative to average drawdown | 1.01 | 1.93 | -0.92 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading graphics...
Sharpe Ratios by Period
| BUFIX | MIEIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.27 | 0.45 | -0.18 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.19 | 0.44 | -0.26 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.47 | 0.57 | -0.10 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.28 | 0.45 | -0.17 |
Correlation
The correlation between BUFIX and MIEIX is 0.92, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
BUFIX vs. MIEIX - Dividend Comparison
BUFIX's dividend yield for the trailing twelve months is around 0.89%, less than MIEIX's 2.87% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BUFIX Buffalo International Fund | 0.89% | 0.85% | 0.84% | 0.59% | 1.85% | 1.20% | 0.28% | 0.57% | 2.42% | 0.36% | 0.00% | 0.51% |
MIEIX MFS International Equity Fund Class R6 | 2.87% | 2.68% | 1.47% | 1.67% | 1.26% | 5.40% | 1.00% | 3.12% | 1.63% | 1.85% | 1.78% | 1.71% |
Drawdowns
BUFIX vs. MIEIX - Drawdown Comparison
The maximum BUFIX drawdown since its inception was -55.09%, roughly equal to the maximum MIEIX drawdown of -53.13%. Use the drawdown chart below to compare losses from any high point for BUFIX and MIEIX.
Loading graphics...
Drawdown Indicators
| BUFIX | MIEIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.09% | -53.13% | -1.96% |
Max Drawdown (1Y)Largest decline over 1 year | -12.85% | -11.26% | -1.59% |
Max Drawdown (5Y)Largest decline over 5 years | -34.93% | -28.07% | -6.86% |
Max Drawdown (10Y)Largest decline over 10 years | -34.93% | -31.35% | -3.58% |
Current DrawdownCurrent decline from peak | -12.77% | -10.84% | -1.93% |
Average DrawdownAverage peak-to-trough decline | -9.24% | -9.01% | -0.23% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.58% | 3.04% | +0.54% |
Volatility
BUFIX vs. MIEIX - Volatility Comparison
Buffalo International Fund (BUFIX) has a higher volatility of 7.79% compared to MFS International Equity Fund Class R6 (MIEIX) at 6.03%. This indicates that BUFIX's price experiences larger fluctuations and is considered to be riskier than MIEIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading graphics...
Volatility by Period
| BUFIX | MIEIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.79% | 6.03% | +1.76% |
Volatility (6M)Calculated over the trailing 6-month period | 12.02% | 9.42% | +2.60% |
Volatility (1Y)Calculated over the trailing 1-year period | 17.87% | 14.88% | +2.99% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.16% | 15.24% | +1.92% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 17.28% | 15.90% | +1.38% |