BUFGX vs. BUFMX

Last updated Jun 24, 2026

BUFGX (Buffalo Growth Fund) and BUFMX (Buffalo Mid Cap Fund) are both mutual funds - BUFGX is a Large Cap Growth Equities fund managed by Buffalo, while BUFMX is a Mid Cap Growth Equities fund managed by Buffalo. Over the past 10 years, BUFGX returned 13.37%/yr vs 8.84%/yr for BUFMX. Their correlation of 0.90 suggests significant overlap in exposure. BUFGX charges 0.92%/yr vs 1.02%/yr for BUFMX.

Performance

BUFGX vs. BUFMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Buffalo Growth Fund (BUFGX) and Buffalo Mid Cap Fund (BUFMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BUFGX achieves a -2.24% return, which is significantly lower than BUFMX's -0.96% return. Over the past 10 years, BUFGX has outperformed BUFMX with an annualized return of 13.37%, while BUFMX has yielded a comparatively lower 8.84% annualized return.

BUFGX

• 1D: -1.32%
• 1M: -3.10%
• YTD: -2.24%
• 6M: -2.94%
• 1Y: 11.58%
• 3Y*: 15.63%
• 5Y*: 8.41%
• 10Y*: 13.37%

BUFMX

• 1D: 0.56%
• 1M: 4.72%
• YTD: -0.96%
• 6M: -2.04%
• 1Y: -5.36%
• 3Y*: 5.01%
• 5Y*: -0.27%
• 10Y*: 8.84%

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

BUFGX vs. BUFMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BUFGX Buffalo Growth Fund	-2.24%	13.95%	25.13%	42.67%	-31.19%	21.52%	28.29%	31.89%	0.69%	22.76%
BUFMX Buffalo Mid Cap Fund	-0.96%	-1.68%	6.73%	26.92%	-27.89%	14.39%	34.24%	37.96%	-7.29%	13.59%

Correlation

The correlation between BUFGX and BUFMX is 0.65, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.65
Correlation (3Y) Calculated over the trailing 3-year period	0.73
Correlation (5Y) Calculated over the trailing 5-year period	0.83
Correlation (10Y) Calculated over the trailing 10-year period	0.86
Correlation (All Time) Calculated using the full available price history since Dec 14, 2001	0.90

Over the past year, the correlation between BUFGX and BUFMX has dropped to 0.65 - well below their long-term average of 0.90, suggesting their price drivers have been diverging.

Return for Risk

BUFGX vs. BUFMX — Risk / Return Rank

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

BUFGX

BUFGX Risk / Return Rank: 9
BUFGX Sharpe Ratio Rank: 10
BUFGX Sortino Ratio Rank: 10
BUFGX Omega Ratio Rank: 10
BUFGX Calmar Ratio Rank: 8
BUFGX Martin Ratio Rank: 9

BUFMX

BUFMX Risk / Return Rank: 2
BUFMX Sharpe Ratio Rank: 2
BUFMX Sortino Ratio Rank: 2
BUFMX Omega Ratio Rank: 2
BUFMX Calmar Ratio Rank: 2
BUFMX Martin Ratio Rank: 2

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.

BUFGX vs. BUFMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Buffalo Growth Fund (BUFGX) and Buffalo Mid Cap Fund (BUFMX). 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.

	BUFGX	BUFMX	Difference
Sharpe ratio: Return per unit of total volatility	0.78	-0.29	+1.07
Sortino ratio: Return per unit of downside risk	1.14	-0.29	+1.43
Omega ratio: Gain probability vs. loss probability	1.15	0.97	+0.18
Calmar ratio: Return relative to maximum drawdown	0.71	-0.25	+0.95
Martin ratio: Return relative to average drawdown	2.32	-0.52	+2.83

BUFGX vs. BUFMX - Sharpe Ratio Comparison

The current BUFGX Sharpe Ratio is 0.78, which is higher than the BUFMX Sharpe Ratio of -0.29. The chart below compares the historical Sharpe Ratios of BUFGX and BUFMX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

BUFGX vs. BUFMX - Drawdown Comparison

The maximum BUFGX drawdown since its inception was -50.17%, smaller than the maximum BUFMX drawdown of -58.44%. Use the drawdown chart below to compare losses from any high point for BUFGX and BUFMX.

Drawdown Indicators

	BUFGX	BUFMX	Difference
Max Drawdown Largest peak-to-trough decline	-50.17%	-58.44%	+8.27%
Max Drawdown (1Y) Largest decline over 1 year	-17.63%	-18.37%	+0.74%
Max Drawdown (3Y) Largest decline over 3 years	-21.93%	-20.29%	-1.64%
Max Drawdown (5Y) Largest decline over 5 years	-35.68%	-35.58%	-0.10%
Max Drawdown (10Y) Largest decline over 10 years	-35.68%	-35.58%	-0.10%
Current Drawdown Current decline from peak	-5.13%	-9.19%	+4.06%
Average Drawdown Average peak-to-trough decline	-8.96%	-9.40%	+0.44%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.36%	8.75%	-3.39%

Volatility

BUFGX vs. BUFMX - Volatility Comparison

Buffalo Growth Fund (BUFGX) and Buffalo Mid Cap Fund (BUFMX) have volatilities of 6.00% and 6.01%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BUFGX	BUFMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.00%	6.01%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	12.80%	12.69%	+0.11%
Volatility (1Y) Calculated over the trailing 1-year period	15.92%	15.70%	+0.22%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.50%	20.23%	+1.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.78%	19.77%	+1.01%

BUFGX vs. BUFMX - Expense Ratio Comparison

BUFGX has a 0.92% expense ratio, which is lower than BUFMX's 1.02% expense ratio.

Dividends

BUFGX vs. BUFMX - Dividend Comparison

BUFGX's dividend yield for the trailing twelve months is around 6.26%, less than BUFMX's 10.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BUFGX Buffalo Growth Fund	6.26%	6.12%	8.55%	5.55%	4.77%	9.90%	4.97%	13.60%	34.64%	20.49%	0.00%	18.46%
BUFMX Buffalo Mid Cap Fund	10.41%	10.31%	6.93%	5.21%	5.46%	11.45%	6.91%	8.20%	4.47%	25.22%	8.49%	13.06%

Frequently Asked Questions

Can I hold both BUFGX and BUFMX in my portfolio?

BUFGX and BUFMX have a correlation of 0.65, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BUFGX or BUFMX?

BUFMX has higher volatility (6.01%) compared to BUFGX (6.00%). In terms of maximum drawdown, BUFGX dropped -50.17% vs BUFMX's -58.44%.

Which has better risk-adjusted returns?

BUFGX currently has the higher Sharpe Ratio (0.78 vs -0.29), 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.