MINIX vs. BUFIX

Last updated Apr 1, 2026

Compare and contrast key facts about MFS International Intrinsic Value Fund Class I (MINIX) and Buffalo International Fund (BUFIX).

MINIX is managed by MFS. BUFIX is managed by Buffalo. It was launched on Sep 27, 2007.

Performance

MINIX vs. BUFIX - Performance Comparison

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

MINIX vs. BUFIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MINIX MFS International Intrinsic Value Fund Class I	-3.26%	33.06%	7.35%	18.04%	-23.05%	10.55%	20.45%	25.90%	-9.02%	27.14%
BUFIX Buffalo International Fund	-4.81%	17.09%	-1.90%	18.33%	-21.80%	18.20%	19.10%	28.01%	-8.85%	29.33%

Returns By Period

In the year-to-date period, MINIX achieves a -3.26% return, which is significantly higher than BUFIX's -4.81% return. Over the past 10 years, MINIX has outperformed BUFIX with an annualized return of 9.57%, while BUFIX has yielded a comparatively lower 8.16% annualized return.

MINIX

• 1D: 0.33%
• 1M: -11.89%
• YTD: -3.26%
• 6M: 0.71%
• 1Y: 18.67%
• 3Y*: 14.36%
• 5Y*: 7.15%
• 10Y*: 9.57%

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%

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

MINIX vs. BUFIX - Expense Ratio Comparison

MINIX has a 0.72% expense ratio, which is lower than BUFIX's 1.03% expense ratio.

BUFIX

Buffalo International Fund

MINIX

MFS International Intrinsic Value Fund Class I

Return for Risk

MINIX vs. BUFIX — Risk / Return Rank

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

MINIX

MINIX Risk / Return Rank: 59
MINIX Sharpe Ratio Rank: 65
MINIX Sortino Ratio Rank: 60
MINIX Omega Ratio Rank: 59
MINIX Calmar Ratio Rank: 57
MINIX Martin Ratio Rank: 55

BUFIX

BUFIX Risk / Return Rank: 11
BUFIX Sharpe Ratio Rank: 11
BUFIX Sortino Ratio Rank: 11
BUFIX Omega Ratio Rank: 11
BUFIX Calmar Ratio Rank: 12
BUFIX Martin Ratio Rank: 12

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.

MINIX vs. BUFIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS International Intrinsic Value Fund Class I (MINIX) and Buffalo International Fund (BUFIX). 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.

	MINIX	BUFIX	Difference
Sharpe ratio Return per unit of total volatility	1.12	0.27	+0.85
Sortino ratio Return per unit of downside risk	1.52	0.49	+1.03
Omega ratio Gain probability vs. loss probability	1.22	1.07	+0.16
Calmar ratio Return relative to maximum drawdown	1.33	0.28	+1.05
Martin ratio Return relative to average drawdown	5.28	1.01	+4.27
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MINIX vs. BUFIX - Sharpe Ratio Comparison

The current MINIX Sharpe Ratio is 1.12, which is higher than the BUFIX Sharpe Ratio of 0.27. The chart below compares the historical Sharpe Ratios of MINIX and BUFIX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	MINIX	BUFIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.12	0.27	+0.85
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.44	0.19	+0.25
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.62	0.47	+0.15
Sharpe Ratio (All Time) Calculated using the full available price history	0.55	0.28	+0.27

Correlation

The correlation between MINIX and BUFIX is 0.90, 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

MINIX vs. BUFIX - Dividend Comparison

MINIX's dividend yield for the trailing twelve months is around 8.03%, more than BUFIX's 0.89% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MINIX MFS International Intrinsic Value Fund Class I	8.03%	7.77%	12.02%	11.21%	13.90%	7.25%	5.25%	3.94%	4.49%	2.62%	1.82%	3.20%
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%

Drawdowns

MINIX vs. BUFIX - Drawdown Comparison

The maximum MINIX drawdown since its inception was -51.72%, smaller than the maximum BUFIX drawdown of -55.09%. Use the drawdown chart below to compare losses from any high point for MINIX and BUFIX.

Drawdown Indicators

	MINIX	BUFIX	Difference
Max Drawdown Largest peak-to-trough decline	-51.72%	-55.09%	+3.37%
Max Drawdown (1Y) Largest decline over 1 year	-12.42%	-12.85%	+0.43%
Max Drawdown (5Y) Largest decline over 5 years	-36.78%	-34.93%	-1.85%
Max Drawdown (10Y) Largest decline over 10 years	-36.78%	-34.93%	-1.85%
Current Drawdown Current decline from peak	-11.89%	-12.77%	+0.88%
Average Drawdown Average peak-to-trough decline	-8.64%	-9.24%	+0.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.13%	3.58%	-0.45%

Volatility

MINIX vs. BUFIX - Volatility Comparison

The current volatility for MFS International Intrinsic Value Fund Class I (MINIX) is 5.98%, while Buffalo International Fund (BUFIX) has a volatility of 7.79%. This indicates that MINIX experiences smaller price fluctuations and is considered to be less risky than BUFIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MINIX	BUFIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.98%	7.79%	-1.81%
Volatility (6M) Calculated over the trailing 6-month period	10.11%	12.02%	-1.91%
Volatility (1Y) Calculated over the trailing 1-year period	15.74%	17.87%	-2.13%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.45%	17.16%	-0.71%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.52%	17.28%	-1.76%