BUFBX vs. ACIIX
Compare and contrast key facts about Buffalo Flexible Income Fund (BUFBX) and American Century Equity Income Fund Class I (ACIIX).
BUFBX is managed by Buffalo. It was launched on Aug 12, 1994. ACIIX is managed by American Century. It was launched on Jul 8, 1998.
Performance
BUFBX vs. ACIIX - Performance Comparison
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BUFBX vs. ACIIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
BUFBX Buffalo Flexible Income Fund | 7.11% | 10.37% | 10.26% | 7.42% | 3.97% | 29.97% | -2.27% | 18.76% | -7.01% | 13.20% |
ACIIX American Century Equity Income Fund Class I | 2.73% | 12.05% | 10.58% | 4.25% | -2.96% | 17.16% | 1.19% | 24.50% | -3.53% | 13.69% |
Returns By Period
In the year-to-date period, BUFBX achieves a 7.11% return, which is significantly higher than ACIIX's 2.73% return. Over the past 10 years, BUFBX has outperformed ACIIX with an annualized return of 9.63%, while ACIIX has yielded a comparatively lower 8.89% annualized return.
BUFBX
- 1D
- 0.14%
- 1M
- -0.91%
- YTD
- 7.11%
- 6M
- 8.72%
- 1Y
- 12.62%
- 3Y*
- 12.23%
- 5Y*
- 11.64%
- 10Y*
- 9.63%
ACIIX
- 1D
- 0.00%
- 1M
- -5.73%
- YTD
- 2.73%
- 6M
- 4.62%
- 1Y
- 9.92%
- 3Y*
- 9.70%
- 5Y*
- 7.47%
- 10Y*
- 8.89%
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BUFBX vs. ACIIX - Expense Ratio Comparison
BUFBX has a 1.01% expense ratio, which is higher than ACIIX's 0.72% expense ratio.
Return for Risk
BUFBX vs. ACIIX — Risk / Return Rank
BUFBX
ACIIX
BUFBX vs. ACIIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Buffalo Flexible Income Fund (BUFBX) and American Century Equity Income Fund Class I (ACIIX). 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.
| BUFBX | ACIIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.98 | 0.93 | +0.05 |
Sortino ratioReturn per unit of downside risk | 1.38 | 1.35 | +0.03 |
Omega ratioGain probability vs. loss probability | 1.22 | 1.19 | +0.03 |
Calmar ratioReturn relative to maximum drawdown | 1.09 | 1.11 | -0.02 |
Martin ratioReturn relative to average drawdown | 5.23 | 4.37 | +0.86 |
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
| BUFBX | ACIIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.98 | 0.93 | +0.05 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.87 | 0.70 | +0.17 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.62 | 0.67 | -0.05 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.58 | 0.53 | +0.05 |
Correlation
The correlation between BUFBX and ACIIX is 0.83, 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
BUFBX vs. ACIIX - Dividend Comparison
BUFBX's dividend yield for the trailing twelve months is around 8.51%, less than ACIIX's 10.28% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BUFBX Buffalo Flexible Income Fund | 8.51% | 9.10% | 3.77% | 3.48% | 4.16% | 5.57% | 3.33% | 2.73% | 6.01% | 5.49% | 2.39% | 3.67% |
ACIIX American Century Equity Income Fund Class I | 10.28% | 10.55% | 11.71% | 8.21% | 8.96% | 7.02% | 2.18% | 7.57% | 9.05% | 12.14% | 8.08% | 10.72% |
Drawdowns
BUFBX vs. ACIIX - Drawdown Comparison
The maximum BUFBX drawdown since its inception was -39.78%, roughly equal to the maximum ACIIX drawdown of -39.16%. Use the drawdown chart below to compare losses from any high point for BUFBX and ACIIX.
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Drawdown Indicators
| BUFBX | ACIIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -39.78% | -39.16% | -0.62% |
Max Drawdown (1Y)Largest decline over 1 year | -11.57% | -8.96% | -2.61% |
Max Drawdown (5Y)Largest decline over 5 years | -14.67% | -13.49% | -1.18% |
Max Drawdown (10Y)Largest decline over 10 years | -35.51% | -32.76% | -2.75% |
Current DrawdownCurrent decline from peak | -1.31% | -5.73% | +4.42% |
Average DrawdownAverage peak-to-trough decline | -4.74% | -5.26% | +0.52% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.41% | 2.30% | +0.11% |
Volatility
BUFBX vs. ACIIX - Volatility Comparison
The current volatility for Buffalo Flexible Income Fund (BUFBX) is 2.12%, while American Century Equity Income Fund Class I (ACIIX) has a volatility of 2.76%. This indicates that BUFBX experiences smaller price fluctuations and is considered to be less risky than ACIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| BUFBX | ACIIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.12% | 2.76% | -0.64% |
Volatility (6M)Calculated over the trailing 6-month period | 6.68% | 6.05% | +0.63% |
Volatility (1Y)Calculated over the trailing 1-year period | 13.90% | 11.61% | +2.29% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 13.40% | 10.74% | +2.66% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 15.58% | 13.37% | +2.21% |