AIOIX vs. TWCIX
Compare and contrast key facts about American Century International Opportunities Fund (AIOIX) and American Century Select Fund (TWCIX).
AIOIX is managed by American Century. It was launched on May 31, 2001. TWCIX is managed by American Century. It was launched on Jun 30, 1971.
Performance
AIOIX vs. TWCIX - Performance Comparison
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AIOIX vs. TWCIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
AIOIX American Century International Opportunities Fund | -0.42% | 29.62% | 1.31% | 8.63% | -30.19% | 5.79% | 31.07% | 28.95% | -22.19% | 45.09% |
TWCIX American Century Select Fund | -12.29% | 16.30% | 26.15% | 39.93% | -28.82% | 25.47% | 33.99% | 36.30% | -3.54% | 28.90% |
Returns By Period
In the year-to-date period, AIOIX achieves a -0.42% return, which is significantly higher than TWCIX's -12.29% return. Over the past 10 years, AIOIX has underperformed TWCIX with an annualized return of 6.96%, while TWCIX has yielded a comparatively higher 14.46% annualized return.
AIOIX
- 1D
- -0.92%
- 1M
- -13.82%
- YTD
- -0.42%
- 6M
- 1.74%
- 1Y
- 31.07%
- 3Y*
- 9.88%
- 5Y*
- 0.98%
- 10Y*
- 6.96%
TWCIX
- 1D
- -0.45%
- 1M
- -8.75%
- YTD
- -12.29%
- 6M
- -10.54%
- 1Y
- 13.57%
- 3Y*
- 15.91%
- 5Y*
- 9.81%
- 10Y*
- 14.46%
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AIOIX vs. TWCIX - Expense Ratio Comparison
AIOIX has a 1.48% expense ratio, which is higher than TWCIX's 0.94% expense ratio.
Return for Risk
AIOIX vs. TWCIX — Risk / Return Rank
AIOIX
TWCIX
AIOIX vs. TWCIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century International Opportunities Fund (AIOIX) and American Century Select Fund (TWCIX). 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.
| AIOIX | TWCIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.56 | 0.61 | +0.95 |
Sortino ratioReturn per unit of downside risk | 2.08 | 1.03 | +1.04 |
Omega ratioGain probability vs. loss probability | 1.30 | 1.14 | +0.15 |
Calmar ratioReturn relative to maximum drawdown | 2.00 | 0.74 | +1.26 |
Martin ratioReturn relative to average drawdown | 8.50 | 2.69 | +5.81 |
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
| AIOIX | TWCIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.56 | 0.61 | +0.95 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.05 | 0.46 | -0.41 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.37 | 0.69 | -0.32 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.52 | 0.57 | -0.05 |
Correlation
The correlation between AIOIX and TWCIX is 0.64, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.
Dividends
AIOIX vs. TWCIX - Dividend Comparison
AIOIX's dividend yield for the trailing twelve months is around 0.28%, less than TWCIX's 11.44% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
AIOIX American Century International Opportunities Fund | 0.28% | 0.27% | 0.32% | 0.23% | 0.00% | 17.80% | 3.18% | 0.92% | 5.28% | 9.09% | 0.04% | 7.15% |
TWCIX American Century Select Fund | 11.44% | 10.04% | 3.67% | 5.21% | 10.36% | 8.25% | 6.26% | 5.42% | 9.05% | 6.30% | 3.43% | 6.16% |
Drawdowns
AIOIX vs. TWCIX - Drawdown Comparison
The maximum AIOIX drawdown since its inception was -66.16%, which is greater than TWCIX's maximum drawdown of -57.31%. Use the drawdown chart below to compare losses from any high point for AIOIX and TWCIX.
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Drawdown Indicators
| AIOIX | TWCIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -66.16% | -57.31% | -8.85% |
Max Drawdown (1Y)Largest decline over 1 year | -14.00% | -14.66% | +0.66% |
Max Drawdown (5Y)Largest decline over 5 years | -41.19% | -31.24% | -9.95% |
Max Drawdown (10Y)Largest decline over 10 years | -41.19% | -31.24% | -9.95% |
Current DrawdownCurrent decline from peak | -14.00% | -14.66% | +0.66% |
Average DrawdownAverage peak-to-trough decline | -16.12% | -12.42% | -3.70% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.29% | 4.01% | -0.72% |
Volatility
AIOIX vs. TWCIX - Volatility Comparison
American Century International Opportunities Fund (AIOIX) has a higher volatility of 8.19% compared to American Century Select Fund (TWCIX) at 5.75%. This indicates that AIOIX's price experiences larger fluctuations and is considered to be riskier than TWCIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| AIOIX | TWCIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 8.19% | 5.75% | +2.44% |
Volatility (6M)Calculated over the trailing 6-month period | 13.95% | 12.15% | +1.80% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.37% | 22.70% | -3.33% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.59% | 21.43% | -2.84% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.70% | 20.94% | -2.24% |