BUFSX vs. NESGX
Compare and contrast key facts about Buffalo Small Cap Fund (BUFSX) and Needham Small Cap Growth Fund (NESGX).
BUFSX is managed by Buffalo. It was launched on Apr 14, 1998. NESGX is managed by Needham. It was launched on May 22, 2002.
Performance
BUFSX vs. NESGX - Performance Comparison
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BUFSX vs. NESGX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BUFSX Buffalo Small Cap Fund | -7.54% | -0.13% | 5.38% | 5.45% | -30.01% | 4.44% | 66.49% | 40.97% | -5.73% | 26.96% |
NESGX Needham Small Cap Growth Fund | 9.51% | 10.50% | 12.76% | 5.68% | -30.21% | 10.59% | 71.90% | 54.42% | -5.43% | 11.96% |
Returns By Period
In the year-to-date period, BUFSX achieves a -7.54% return, which is significantly lower than NESGX's 9.51% return. Over the past 10 years, BUFSX has underperformed NESGX with an annualized return of 8.96%, while NESGX has yielded a comparatively higher 14.30% annualized return.
BUFSX
- 1D
- -1.58%
- 1M
- -11.35%
- YTD
- -7.54%
- 6M
- -7.29%
- 1Y
- 2.46%
- 3Y*
- -1.05%
- 5Y*
- -6.73%
- 10Y*
- 8.96%
NESGX
- 1D
- -4.45%
- 1M
- -7.07%
- YTD
- 9.51%
- 6M
- 12.14%
- 1Y
- 47.82%
- 3Y*
- 10.96%
- 5Y*
- 0.71%
- 10Y*
- 14.30%
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BUFSX vs. NESGX - Expense Ratio Comparison
BUFSX has a 1.01% expense ratio, which is lower than NESGX's 1.85% expense ratio.
Return for Risk
BUFSX vs. NESGX — Risk / Return Rank
BUFSX
NESGX
BUFSX vs. NESGX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Buffalo Small Cap Fund (BUFSX) and Needham Small Cap Growth Fund (NESGX). 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.
| BUFSX | NESGX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.09 | 1.32 | -1.23 |
Sortino ratioReturn per unit of downside risk | 0.30 | 1.88 | -1.58 |
Omega ratioGain probability vs. loss probability | 1.04 | 1.25 | -0.21 |
Calmar ratioReturn relative to maximum drawdown | 0.01 | 2.38 | -2.38 |
Martin ratioReturn relative to average drawdown | 0.03 | 8.02 | -7.99 |
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
| BUFSX | NESGX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.09 | 1.32 | -1.23 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.27 | 0.02 | -0.30 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.37 | 0.56 | -0.20 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.43 | 0.51 | -0.08 |
Correlation
The correlation between BUFSX and NESGX is 0.85, 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
BUFSX vs. NESGX - Dividend Comparison
Neither BUFSX nor NESGX has paid dividends to shareholders.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BUFSX Buffalo Small Cap Fund | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 13.53% | 9.01% | 9.14% | 31.02% | 30.30% | 25.19% | 70.18% |
NESGX Needham Small Cap Growth Fund | 0.00% | 0.00% | 0.00% | 0.00% | 4.16% | 25.09% | 13.69% | 8.43% | 22.26% | 8.94% | 6.67% | 2.52% |
Drawdowns
BUFSX vs. NESGX - Drawdown Comparison
The maximum BUFSX drawdown since its inception was -53.24%, which is greater than NESGX's maximum drawdown of -50.29%. Use the drawdown chart below to compare losses from any high point for BUFSX and NESGX.
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Drawdown Indicators
| BUFSX | NESGX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -53.24% | -50.29% | -2.95% |
Max Drawdown (1Y)Largest decline over 1 year | -14.92% | -17.27% | +2.35% |
Max Drawdown (5Y)Largest decline over 5 years | -46.57% | -50.05% | +3.48% |
Max Drawdown (10Y)Largest decline over 10 years | -46.74% | -50.29% | +3.55% |
Current DrawdownCurrent decline from peak | -37.02% | -9.15% | -27.87% |
Average DrawdownAverage peak-to-trough decline | -12.82% | -11.74% | -1.08% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.21% | 5.13% | -0.92% |
Volatility
BUFSX vs. NESGX - Volatility Comparison
The current volatility for Buffalo Small Cap Fund (BUFSX) is 6.37%, while Needham Small Cap Growth Fund (NESGX) has a volatility of 10.96%. This indicates that BUFSX experiences smaller price fluctuations and is considered to be less risky than NESGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BUFSX | NESGX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.37% | 10.96% | -4.59% |
Volatility (6M)Calculated over the trailing 6-month period | 13.84% | 22.87% | -9.03% |
Volatility (1Y)Calculated over the trailing 1-year period | 23.32% | 35.07% | -11.75% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 24.65% | 29.08% | -4.43% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 24.50% | 25.51% | -1.01% |