BUFMX vs. BUFOX
BUFMX (Buffalo Mid Cap Fund) and BUFOX (Buffalo Early Stage Growth Fund) are both mutual funds - BUFMX is a Mid Cap Growth Equities fund managed by Buffalo, while BUFOX is a Small Cap Growth Equities fund managed by Buffalo. Over the past 10 years, BUFMX returned 7.41%/yr vs 10.18%/yr for BUFOX. Their correlation of 0.86 means they have usually moved in the same direction. BUFMX charges 1.02%/yr vs 1.46%/yr for BUFOX.
Performance
BUFMX vs. BUFOX - Performance Comparison
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Returns By Period
In the year-to-date period, BUFMX achieves a -6.12% return, which is significantly lower than BUFOX's 12.18% return. Over the past 10 years, BUFMX has underperformed BUFOX with an annualized return of 7.41%, while BUFOX has yielded a comparatively higher 10.18% annualized return.
BUFMX
- 1D
- 2.86%
- 1M
- -4.21%
- 6M
- -4.41%
- YTD
- -6.12%
- 1Y
- -11.44%
- 3Y*
- 1.22%
- 5Y*
- -1.76%
- 10Y*
- 7.41%
- ALL TIME*
- 7.54%
BUFOX
- 1D
- 1.84%
- 1M
- -5.15%
- 6M
- 9.23%
- YTD
- 12.18%
- 1Y
- 18.95%
- 3Y*
- 5.50%
- 5Y*
- -2.22%
- 10Y*
- 10.18%
- ALL TIME*
- 8.28%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
BUFMX Buffalo Mid Cap Fund | $0.00 | $0.00 | $0.00 |
| $0.00 | $0.00 | $0.00 |
BUFMX vs. BUFOX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BUFMX Buffalo Mid Cap Fund | -6.12% | -1.68% | 6.73% | 26.92% | -27.89% | 14.39% | 34.24% | 37.96% | -7.29% | 13.59% |
BUFOX Buffalo Early Stage Growth Fund | 12.18% | 3.09% | 7.52% | 9.83% | -30.78% | 7.43% | 47.85% | 34.06% | -3.78% | 27.03% |
Correlation
The correlation between BUFMX and BUFOX is 0.80, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.80 |
Correlation (3Y) Balances recent behavior with more history. | 0.83 |
Correlation (5Y) Shows whether the relationship held over a longer period. | 0.87 |
Correlation (10Y) Provides a long-term view across more market conditions. | 0.86 |
Correlation (All Time) Calculated using the full available price history since May 25, 2004 | 0.86 |
The correlation between BUFMX and BUFOX has been stable across timeframes, ranging from 0.80 to 0.87 - a consistent structural relationship.
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Return for Risk
BUFMX vs. BUFOX — Risk / Return Rank
BUFMX
BUFOX
BUFMX vs. BUFOX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Buffalo Mid Cap Fund (BUFMX) and Buffalo Early Stage Growth Fund (BUFOX). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| BUFMX | BUFOX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.53 | ||
| Sortino ratioReturn per unit of downside risk | -2.23 | ||
| Omega ratioGain probability vs. loss probability | 0.88 | 1.13 | -0.25 |
| Calmar ratioReturn relative to maximum drawdown | -0.76 | 1.10 | -1.86 |
| Martin ratioReturn relative to average drawdown | -1.52 | 3.17 | -4.68 |
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Drawdowns
BUFMX vs. BUFOX - Drawdown Comparison
The maximum BUFMX drawdown since its inception was -58.44%, smaller than the maximum BUFOX drawdown of -69.71%. Use the drawdown chart below to compare losses from any high point for BUFMX and BUFOX.
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Drawdown Indicators
| BUFMX | BUFOX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -58.44% | -69.71% | +11.27% |
Max Drawdown (1Y)Largest decline over 1 year | -17.71% | -15.52% | -2.19% |
Max Drawdown (3Y)Largest decline over 3 years | -20.29% | -24.62% | +4.33% |
Max Drawdown (5Y)Largest decline over 5 years | -35.58% | -43.17% | +7.59% |
Max Drawdown (10Y)Largest decline over 10 years | -35.58% | -43.17% | +7.59% |
Current DrawdownCurrent decline from peak | -13.92% | -13.72% | -0.20% |
Average DrawdownAverage peak-to-trough decline | -9.41% | -16.01% | +6.60% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 9.49% | 5.38% | +4.11% |
Volatility
BUFMX vs. BUFOX - Volatility Comparison
The current volatility for Buffalo Mid Cap Fund (BUFMX) is 5.84%, while Buffalo Early Stage Growth Fund (BUFOX) has a volatility of 6.47%. This indicates that BUFMX experiences smaller price fluctuations and is considered to be less risky than BUFOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BUFMX | BUFOX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.84% | 6.47% | -0.63% |
Volatility (6M)Calculated over the trailing 6-month period | 14.04% | 17.35% | -3.31% |
Volatility (1Y)Calculated over the trailing 1-year period | 16.88% | 23.25% | -6.37% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 20.41% | 23.03% | -2.62% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 19.78% | 22.43% | -2.65% |
BUFMX vs. BUFOX - Expense Ratio Comparison
BUFMX has a 1.02% expense ratio, which is lower than BUFOX's 1.46% expense ratio.
Dividends
BUFMX vs. BUFOX - Dividend Comparison
BUFMX's dividend yield for the trailing twelve months is around 10.98%, more than BUFOX's 4.55% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BUFMX Buffalo Mid Cap Fund | 10.98% | 10.31% | 6.93% | 5.21% | 5.46% | 11.45% | 6.91% | 8.20% | 4.47% | 25.22% | 8.49% | 13.06% |
BUFOX Buffalo Early Stage Growth Fund | 4.55% | 5.10% | 0.00% | 0.00% | 1.20% | 15.83% | 11.19% | 4.77% | 14.50% | 20.01% | 8.35% | 8.53% |
Frequently Asked Questions
BUFMX and BUFOX have a correlation of 0.80, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
BUFOX has higher volatility (6.47%) compared to BUFMX (5.84%). In terms of maximum drawdown, BUFMX dropped -58.44% vs BUFOX's -69.71%.
BUFOX currently has the higher Sharpe Ratio (0.73 vs -0.80), 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.
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