TWCGX vs. APOIX
TWCGX (American Century Growth Fund) and APOIX (American Century Short Duration Inflation Protection Bond Fund Investor Class) are both mutual funds - TWCGX is a Large Cap Growth Equities fund managed by American Century, while APOIX is a Inflation-Protected Bonds fund managed by American Century. Over the past 10 years, TWCGX returned 17.03%/yr vs 3.13%/yr for APOIX. At a correlation of -0.03, they often move in opposite directions. TWCGX charges 0.94%/yr vs 0.57%/yr for APOIX.
Performance
TWCGX vs. APOIX - Performance Comparison
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Returns By Period
In the year-to-date period, TWCGX achieves a 8.57% return, which is significantly higher than APOIX's 2.02% return. Over the past 10 years, TWCGX has outperformed APOIX with an annualized return of 17.03%, while APOIX has yielded a comparatively lower 3.13% annualized return.
TWCGX
- 1D
- -0.51%
- 1M
- 7.77%
- YTD
- 8.57%
- 6M
- 7.58%
- 1Y
- 26.68%
- 3Y*
- 21.99%
- 5Y*
- 13.42%
- 10Y*
- 17.03%
APOIX
- 1D
- 0.00%
- 1M
- -0.00%
- YTD
- 2.02%
- 6M
- 1.90%
- 1Y
- 4.51%
- 3Y*
- 4.85%
- 5Y*
- 2.96%
- 10Y*
- 3.13%
TWCGX vs. APOIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
TWCGX American Century Growth Fund | 8.57% | 15.28% | 26.20% | 43.31% | -31.39% | 27.86% | 35.23% | 35.39% | -1.27% | 30.06% |
APOIX American Century Short Duration Inflation Protection Bond Fund Investor Class | 2.02% | 5.95% | 4.15% | 3.82% | -3.89% | 6.30% | 5.06% | 4.77% | 1.81% | 0.73% |
Correlation
The correlation between TWCGX and APOIX is 0.02, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.02 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.05 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.11 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.08 |
Correlation (All Time) Calculated using the full available price history since Jun 1, 2005 | -0.03 |
The correlation between TWCGX and APOIX shifts across timeframes, from -0.03 (all time) to 0.11 (5 years), reflecting how their relationship changes across market environments.
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Return for Risk
TWCGX vs. APOIX — Risk / Return Rank
TWCGX
APOIX
TWCGX vs. APOIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Growth Fund (TWCGX) and American Century Short Duration Inflation Protection Bond Fund Investor Class (APOIX). 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.
| TWCGX | APOIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.70 | ||
| Sortino ratioReturn per unit of downside risk | -1.60 | ||
| Omega ratioGain probability vs. loss probability | 1.31 | 1.51 | -0.20 |
| Calmar ratioReturn relative to maximum drawdown | 1.66 | 5.81 | -4.15 |
| Martin ratioReturn relative to average drawdown | 5.50 | 19.09 | -13.59 |
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
| TWCGX | APOIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.76 | 2.45 | -0.70 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.62 | 0.90 | -0.28 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.80 | 1.10 | -0.30 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.53 | 0.72 | -0.18 |
Drawdowns
TWCGX vs. APOIX - Drawdown Comparison
The maximum TWCGX drawdown since its inception was -59.60%, which is greater than APOIX's maximum drawdown of -14.54%. Use the drawdown chart below to compare losses from any high point for TWCGX and APOIX.
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Drawdown Indicators
| TWCGX | APOIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -59.60% | -14.54% | -45.06% |
Max Drawdown (1Y)Largest decline over 1 year | -16.69% | -0.76% | -15.93% |
Max Drawdown (3Y)Largest decline over 3 years | -24.20% | -1.42% | -22.78% |
Max Drawdown (5Y)Largest decline over 5 years | -34.92% | -6.58% | -28.34% |
Max Drawdown (10Y)Largest decline over 10 years | -34.92% | -6.58% | -28.34% |
Current DrawdownCurrent decline from peak | -0.51% | -0.00% | -0.51% |
Average DrawdownAverage peak-to-trough decline | -15.30% | -1.99% | -13.31% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.01% | 0.23% | +4.78% |
Volatility
TWCGX vs. APOIX - Volatility Comparison
American Century Growth Fund (TWCGX) has a higher volatility of 3.44% compared to American Century Short Duration Inflation Protection Bond Fund Investor Class (APOIX) at 0.51%. This indicates that TWCGX's price experiences larger fluctuations and is considered to be riskier than APOIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| TWCGX | APOIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.44% | 0.51% | +2.93% |
Volatility (6M)Calculated over the trailing 6-month period | 11.92% | 1.25% | +10.67% |
Volatility (1Y)Calculated over the trailing 1-year period | 15.72% | 1.81% | +13.91% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 21.59% | 3.31% | +18.28% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 21.31% | 2.85% | +18.46% |
TWCGX vs. APOIX - Expense Ratio Comparison
TWCGX has a 0.94% expense ratio, which is higher than APOIX's 0.57% expense ratio.
Dividends
TWCGX vs. APOIX - Dividend Comparison
TWCGX's dividend yield for the trailing twelve months is around 15.79%, more than APOIX's 3.91% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
APOIX American Century Short Duration Inflation Protection Bond Fund Investor Class | 3.91% | 3.99% | 2.31% | 2.78% | 5.63% | 3.92% | 0.81% | 1.69% | 3.99% | 1.52% | 0.42% | 0.00% |
TWCGX American Century Growth Fund | 15.79% | 17.14% | 5.96% | 4.81% | 4.86% | 9.83% | 5.33% | 5.60% | 14.07% | 10.28% | 4.64% | 6.80% |
Frequently Asked Questions
TWCGX and APOIX have a correlation of 0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
TWCGX has higher volatility (3.44%) compared to APOIX (0.51%). In terms of maximum drawdown, TWCGX dropped -59.60% vs APOIX's -14.54%.
APOIX currently has the higher Sharpe Ratio (2.45 vs 1.76), 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.
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