AMCPX vs. BUFEX
Compare and contrast key facts about American Funds AMCAP Fund Class A (AMCPX) and Buffalo Large Cap Fund (BUFEX).
AMCPX is managed by American Funds. It was launched on Jan 5, 1967. BUFEX is managed by Buffalo. It was launched on May 19, 1995.
Performance
AMCPX vs. BUFEX - Performance Comparison
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AMCPX vs. BUFEX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AMCPX American Funds AMCAP Fund Class A | -11.82% | 17.68% | 21.11% | 31.04% | -28.67% | 20.57% | 21.42% | 26.35% | -4.42% | 22.08% |
BUFEX Buffalo Large Cap Fund | -10.76% | 16.27% | 28.86% | 40.39% | -28.64% | 25.55% | 28.08% | 31.76% | -1.60% | 24.86% |
Returns By Period
In the year-to-date period, AMCPX achieves a -11.82% return, which is significantly lower than BUFEX's -10.76% return. Over the past 10 years, AMCPX has underperformed BUFEX with an annualized return of 10.59%, while BUFEX has yielded a comparatively higher 13.92% annualized return.
AMCPX
- 1D
- -0.37%
- 1M
- -10.12%
- YTD
- -11.82%
- 6M
- -9.34%
- 1Y
- 11.06%
- 3Y*
- 14.39%
- 5Y*
- 6.22%
- 10Y*
- 10.59%
BUFEX
- 1D
- -0.55%
- 1M
- -8.35%
- YTD
- -10.76%
- 6M
- -10.00%
- 1Y
- 13.08%
- 3Y*
- 18.20%
- 5Y*
- 10.25%
- 10Y*
- 13.92%
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AMCPX vs. BUFEX - Expense Ratio Comparison
AMCPX has a 0.65% expense ratio, which is lower than BUFEX's 0.93% expense ratio.
Return for Risk
AMCPX vs. BUFEX — Risk / Return Rank
AMCPX
BUFEX
AMCPX vs. BUFEX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Funds AMCAP Fund Class A (AMCPX) and Buffalo Large Cap Fund (BUFEX). 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.
| AMCPX | BUFEX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.56 | 0.66 | -0.10 |
Sortino ratioReturn per unit of downside risk | 0.94 | 1.08 | -0.14 |
Omega ratioGain probability vs. loss probability | 1.13 | 1.15 | -0.02 |
Calmar ratioReturn relative to maximum drawdown | 0.59 | 0.76 | -0.17 |
Martin ratioReturn relative to average drawdown | 2.42 | 2.69 | -0.27 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| AMCPX | BUFEX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.56 | 0.66 | -0.10 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.33 | 0.52 | -0.20 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.57 | 0.72 | -0.15 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.57 | 0.53 | +0.05 |
Correlation
The correlation between AMCPX and BUFEX is 0.92, 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
AMCPX vs. BUFEX - Dividend Comparison
AMCPX's dividend yield for the trailing twelve months is around 9.90%, more than BUFEX's 7.56% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AMCPX American Funds AMCAP Fund Class A | 9.90% | 8.73% | 8.19% | 3.26% | 7.54% | 3.43% | 3.88% | 4.90% | 7.84% | 5.37% | 3.81% | 8.86% |
BUFEX Buffalo Large Cap Fund | 7.56% | 6.75% | 3.65% | 0.03% | 3.07% | 25.69% | 0.14% | 1.42% | 6.00% | 5.33% | 0.00% | 6.83% |
Drawdowns
AMCPX vs. BUFEX - Drawdown Comparison
The maximum AMCPX drawdown since its inception was -62.37%, which is greater than BUFEX's maximum drawdown of -54.12%. Use the drawdown chart below to compare losses from any high point for AMCPX and BUFEX.
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Drawdown Indicators
| AMCPX | BUFEX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -62.37% | -54.12% | -8.25% |
Max Drawdown (1Y)Largest decline over 1 year | -14.18% | -13.76% | -0.42% |
Max Drawdown (5Y)Largest decline over 5 years | -36.90% | -32.54% | -4.36% |
Max Drawdown (10Y)Largest decline over 10 years | -36.90% | -32.54% | -4.36% |
Current DrawdownCurrent decline from peak | -14.18% | -13.76% | -0.42% |
Average DrawdownAverage peak-to-trough decline | -9.60% | -9.27% | -0.33% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.47% | 3.87% | -0.40% |
Volatility
AMCPX vs. BUFEX - Volatility Comparison
American Funds AMCAP Fund Class A (AMCPX) and Buffalo Large Cap Fund (BUFEX) have volatilities of 5.26% and 5.05%, 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.
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Volatility by Period
| AMCPX | BUFEX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.26% | 5.05% | +0.21% |
Volatility (6M)Calculated over the trailing 6-month period | 11.06% | 10.62% | +0.44% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.60% | 20.09% | -0.49% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 19.12% | 19.68% | -0.56% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.63% | 19.42% | -0.79% |