ACITX vs. VTAPX
Compare and contrast key facts about American Century Inflation-Adjusted Bond Fund (ACITX) and Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares (VTAPX).
ACITX is managed by American Century. It was launched on Feb 9, 1997. VTAPX is managed by Vanguard. It was launched on Oct 16, 2012.
Performance
ACITX vs. VTAPX - Performance Comparison
Loading graphics...
ACITX vs. VTAPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
ACITX American Century Inflation-Adjusted Bond Fund | 0.28% | 6.68% | 1.68% | 3.17% | -12.37% | 6.38% | 10.28% | 7.85% | -1.21% | 4.47% |
VTAPX Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares | 0.97% | 6.03% | 4.73% | 4.59% | -2.84% | 5.26% | 4.97% | 4.85% | 0.53% | 0.82% |
Returns By Period
In the year-to-date period, ACITX achieves a 0.28% return, which is significantly lower than VTAPX's 0.97% return. Over the past 10 years, ACITX has underperformed VTAPX with an annualized return of 2.56%, while VTAPX has yielded a comparatively higher 3.05% annualized return.
ACITX
- 1D
- 0.66%
- 1M
- -1.40%
- YTD
- 0.28%
- 6M
- 0.10%
- 1Y
- 2.71%
- 3Y*
- 2.70%
- 5Y*
- 1.16%
- 10Y*
- 2.56%
VTAPX
- 1D
- 0.28%
- 1M
- 0.04%
- YTD
- 0.97%
- 6M
- 1.31%
- 1Y
- 3.86%
- 3Y*
- 4.67%
- 5Y*
- 3.48%
- 10Y*
- 3.05%
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
ACITX vs. VTAPX - Expense Ratio Comparison
ACITX has a 0.46% expense ratio, which is higher than VTAPX's 0.06% expense ratio.
Return for Risk
ACITX vs. VTAPX — Risk / Return Rank
ACITX
VTAPX
ACITX vs. VTAPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for American Century Inflation-Adjusted Bond Fund (ACITX) and Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares (VTAPX). 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.
| ACITX | VTAPX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.76 | 2.28 | -1.52 |
Sortino ratioReturn per unit of downside risk | 1.07 | 3.41 | -2.35 |
Omega ratioGain probability vs. loss probability | 1.14 | 1.49 | -0.35 |
Calmar ratioReturn relative to maximum drawdown | 1.21 | 4.65 | -3.45 |
Martin ratioReturn relative to average drawdown | 3.87 | 14.74 | -10.87 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading graphics...
Sharpe Ratios by Period
| ACITX | VTAPX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.76 | 2.28 | -1.52 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.19 | 1.31 | -1.12 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.47 | 1.37 | -0.91 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.75 | 1.04 | -0.29 |
Correlation
The correlation between ACITX and VTAPX is 0.79, 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
ACITX vs. VTAPX - Dividend Comparison
ACITX's dividend yield for the trailing twelve months is around 4.29%, more than VTAPX's 3.55% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ACITX American Century Inflation-Adjusted Bond Fund | 4.29% | 4.30% | 2.19% | 4.44% | 7.34% | 4.47% | 1.16% | 2.45% | 4.31% | 3.47% | 2.27% | 0.99% |
VTAPX Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares | 3.55% | 3.78% | 2.68% | 2.84% | 6.82% | 4.67% | 1.19% | 1.94% | 2.45% | 1.52% | 0.76% | 0.00% |
Drawdowns
ACITX vs. VTAPX - Drawdown Comparison
The maximum ACITX drawdown since its inception was -15.50%, which is greater than VTAPX's maximum drawdown of -5.33%. Use the drawdown chart below to compare losses from any high point for ACITX and VTAPX.
Loading graphics...
Drawdown Indicators
| ACITX | VTAPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -15.50% | -5.33% | -10.17% |
Max Drawdown (1Y)Largest decline over 1 year | -3.05% | -0.92% | -2.13% |
Max Drawdown (5Y)Largest decline over 5 years | -15.50% | -5.33% | -10.17% |
Max Drawdown (10Y)Largest decline over 10 years | -15.50% | -5.33% | -10.17% |
Current DrawdownCurrent decline from peak | -2.27% | -0.28% | -1.99% |
Average DrawdownAverage peak-to-trough decline | -3.25% | -1.04% | -2.21% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.95% | 0.29% | +0.66% |
Volatility
ACITX vs. VTAPX - Volatility Comparison
American Century Inflation-Adjusted Bond Fund (ACITX) has a higher volatility of 1.39% compared to Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares (VTAPX) at 0.59%. This indicates that ACITX's price experiences larger fluctuations and is considered to be riskier than VTAPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading graphics...
Volatility by Period
| ACITX | VTAPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.39% | 0.59% | +0.80% |
Volatility (6M)Calculated over the trailing 6-month period | 2.22% | 0.96% | +1.26% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.08% | 1.79% | +2.29% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.15% | 2.67% | +3.48% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 5.52% | 2.23% | +3.29% |