BUFTX vs. VO
Compare and contrast key facts about Buffalo Discovery Fund (BUFTX) and Vanguard Mid-Cap ETF (VO).
BUFTX is managed by Buffalo. It was launched on Apr 16, 2001. VO is a passively managed fund by Vanguard that tracks the performance of the CRSP US Mid Cap Index. It was launched on Jan 26, 2004.
Performance
BUFTX vs. VO - Performance Comparison
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BUFTX vs. VO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BUFTX Buffalo Discovery Fund | -10.76% | -1.83% | 5.31% | 24.30% | -28.78% | 11.55% | 33.90% | 31.62% | -6.52% | 25.43% |
VO Vanguard Mid-Cap ETF | -0.05% | 11.62% | 15.31% | 16.03% | -18.73% | 24.70% | 18.10% | 30.98% | -9.24% | 19.28% |
Returns By Period
In the year-to-date period, BUFTX achieves a -10.76% return, which is significantly lower than VO's -0.05% return. Over the past 10 years, BUFTX has underperformed VO with an annualized return of 6.96%, while VO has yielded a comparatively higher 10.74% annualized return.
BUFTX
- 1D
- 2.57%
- 1M
- -8.42%
- YTD
- -10.76%
- 6M
- -13.55%
- 1Y
- -7.13%
- 3Y*
- 1.29%
- 5Y*
- -2.71%
- 10Y*
- 6.96%
VO
- 1D
- 0.63%
- 1M
- -5.18%
- YTD
- -0.05%
- 6M
- -0.76%
- 1Y
- 13.07%
- 3Y*
- 12.85%
- 5Y*
- 6.79%
- 10Y*
- 10.74%
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BUFTX vs. VO - Expense Ratio Comparison
BUFTX has a 1.00% expense ratio, which is higher than VO's 0.04% expense ratio.
Return for Risk
BUFTX vs. VO — Risk / Return Rank
BUFTX
VO
BUFTX vs. VO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Buffalo Discovery Fund (BUFTX) and Vanguard Mid-Cap ETF (VO). 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.
| BUFTX | VO | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | -0.34 | 0.75 | -1.08 |
Sortino ratioReturn per unit of downside risk | -0.35 | 1.15 | -1.50 |
Omega ratioGain probability vs. loss probability | 0.96 | 1.16 | -0.21 |
Calmar ratioReturn relative to maximum drawdown | -0.38 | 1.06 | -1.43 |
Martin ratioReturn relative to average drawdown | -1.11 | 4.83 | -5.94 |
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
| BUFTX | VO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | -0.34 | 0.75 | -1.08 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.13 | 0.39 | -0.52 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.34 | 0.57 | -0.23 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.35 | 0.48 | -0.14 |
Correlation
The correlation between BUFTX and VO 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
BUFTX vs. VO - Dividend Comparison
BUFTX's dividend yield for the trailing twelve months is around 23.69%, more than VO's 1.50% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BUFTX Buffalo Discovery Fund | 23.69% | 21.15% | 10.00% | 0.00% | 7.08% | 15.11% | 7.98% | 14.81% | 7.01% | 4.64% | 0.00% | 7.56% |
VO Vanguard Mid-Cap ETF | 1.50% | 1.52% | 1.49% | 1.52% | 1.60% | 1.12% | 1.45% | 1.48% | 1.82% | 1.35% | 1.45% | 1.47% |
Drawdowns
BUFTX vs. VO - Drawdown Comparison
The maximum BUFTX drawdown since its inception was -60.45%, roughly equal to the maximum VO drawdown of -58.87%. Use the drawdown chart below to compare losses from any high point for BUFTX and VO.
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Drawdown Indicators
| BUFTX | VO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -60.45% | -58.87% | -1.58% |
Max Drawdown (1Y)Largest decline over 1 year | -19.03% | -12.74% | -6.29% |
Max Drawdown (5Y)Largest decline over 5 years | -36.36% | -27.57% | -8.79% |
Max Drawdown (10Y)Largest decline over 10 years | -36.36% | -39.37% | +3.01% |
Current DrawdownCurrent decline from peak | -20.86% | -5.53% | -15.33% |
Average DrawdownAverage peak-to-trough decline | -11.28% | -7.91% | -3.37% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 6.44% | 2.79% | +3.65% |
Volatility
BUFTX vs. VO - Volatility Comparison
Buffalo Discovery Fund (BUFTX) has a higher volatility of 5.72% compared to Vanguard Mid-Cap ETF (VO) at 4.83%. This indicates that BUFTX's price experiences larger fluctuations and is considered to be riskier than VO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BUFTX | VO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.72% | 4.83% | +0.89% |
Volatility (6M)Calculated over the trailing 6-month period | 11.82% | 9.73% | +2.09% |
Volatility (1Y)Calculated over the trailing 1-year period | 20.43% | 17.57% | +2.86% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 21.11% | 17.61% | +3.50% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 20.34% | 18.94% | +1.40% |