Fund Evaluator:
American Century Short Dur Infl ProBd Y (APOYX)Best Performing in Short-Term Inflation-Protected Bond Over the Last Year
| 3.6% | Vanguard Shrt-Term Infl-Prot Sec Idx Adm (VTAPX) |
| 3.4% | American Century Short Dur Infl ProBd Y (APOYX) |
| 3.3% | T. Rowe Price US Limited Dtn TIPS Z (TLDZX) |
| 3.3% | Nuveen Inflation Link Bd I (TIIHX) |
| 3.2% | iShares Short-Term TIPS Bond Idx Inv A (BAIPX) |
Fund Details
American Century Short Dur Infl ProBd Y Overview
American Century Short Dur Infl ProBd Y (APOYX) is an actively managed Taxable Bond Short-Term Inflation-Protected Bond fund. American Century Investments launched the fund in 2017.
The investment seeks total return using a strategy that seeks to protect against U.S. inflation. The fund normally invests at least 80% of its net assets in inflation-linked debt securities. It invests primarily in investment-grade securities, but may also invest a portion of its assets in high-yield securities, or junk bonds. The fund also may invest a portion of its net assets in fixed-income securities that are not linked to inflation. It may invest up to 20% of its total assets in securities denominated in foreign currencies and may invest beyond this limit in U.S. dollar denominated securities of foreign issuers.
About American Century Short Dur Infl ProBd Y (APOYX)
There are 3 members of the management team with an average tenure of 10.98 years: James Platz (2007), Miguel Castillo (2014), Stephen Bartolini (2024). Management tenure is more important for actively managed funds than passive index funds.
The fund has 2 primary benchmarks: Bloomberg US Agg Bond TR USD index with a weighting of 100% and Bloomberg U.S. Treasury TIPS 1-5Y TR USD index with a weighting of 100%. American Century Short Dur Infl ProBd Y has 128 securities in its portfolio. The top 10 holdings constitute 66.9% of the fund’s assets. The fund meets the SEC requirement of being classified as a diversified fund. The fund is not considered to have an ESG focus with its investment selection and management.
American Century Short Dur Infl ProBd Y is part of the Fixed Income global asset class and is within the Taxable Bond fund group. American Century Short Dur Infl ProBd Y has 3.2% of its portfolio invested in foreign issues. The overall assets allocated to domestic stock is 0.0%. There is 0.0% allocated to foreign stock, and 0.4% is allocated to preferred stocks. The bond allocation as a percentage of total assets is 96.6% (93.5% domestic bond, 3.2% foreign bond and 0.0% convertible bond). American Century Short Dur Infl ProBd Y has 3.0% of the portfolio in cash.
Assets Under Management
The fund has $26 million in total assets, which is below the $1 billion average for the Short-Term Inflation-Protected Bond category. Normally, lower assets under management translates to higher average expense ratios, and greater total assets are desired. However, for some investment categories, such as small-cap investing, it may be difficult for the manager to fully employ the desired active strategy if assets grow too large or too quickly.
APOYX Performance and Fees
The expense ratio measures how much of a fund’s assets are used for administrative expenses and operating expenses, including adviser fees and fees for the transfer agent and custodial services. The American Century Short Dur Infl ProBd Y expense ratio is average compared to funds in the Short-Term Inflation-Protected Bond category. American Century Short Dur Infl ProBd Y has an expense ratio of 0.41%, which is 21% lower than its category average, making the fund expense ratio grade a C. While it is difficult to predict returns, it is known that high annual expense ratios reduce your rate of return, and excessive fees are difficult to overcome. Active management normally comes with higher expense ratios than passive index management. Certain investment categories such as small company and foreign also normally have higher expense ratios. It is best to compare fund expense ratios against the category averages for meaningful assessments.
High portfolio turnover can translate to higher expenses and lower aftertax returns. American Century Short Dur Infl ProBd Y has a portfolio turnover rate of 56%, indicating that holds its assets around 0.0 years. By way of comparison, the average portfolio turnover is 63% for the Short-Term Inflation-Protected Bond category.
Recently, in the month of June 2026, American Century Short Dur Infl ProBd Y returned -0.5%, which earned it a grade of D, as the Short-Term Inflation-Protected Bond category had an average return of -0.5%. The letter grades of A, B, C, D and F are based upon relative rankings within the investment category. A grade of A, for example, would indicate that the return is in the highest 20% for that time period compared to all funds in that category.
American Century Short Dur Infl ProBd Y has a trailing yield of 3.69%, which is below the 4.31% category average. The fund normally distributes its income quarterly.
It’s natural to seek the best-performing investments, but you must consider the relationship between risk and return and the impact of costs and taxes on your realized returns.
American Century Short Dur Infl ProBd Y Grades
Year to date, the fund has returned 1.6%, 0.3 percentage points better than the category, which translates into a grade of A. The fund has returned 3.4% over the past year (grade of C), 5.1% over the past three years (grade of C) and 3.1% per year over the past five years (grade of B) and 3.0% per year over the past 10 years (grade of C).
For more mutual fund grades, analysis and screening tools to help your investment discovery, join AAII for a $2, full-access trial. Learn more here: https://invest.aaii.com/membership.
Otherwise, for more information about American Century Short Dur Infl ProBd Y, including its riskiness, submit your email to unlock the rest of the article.
Gain access to exclusive AAII member-only content.
APOYX Trailing NAV Total Returns Data as of 6/30/26
| Last Month |
Last Quarter |
Ann'l. 1Yr |
Ann'l. 3Yr |
Ann'l. 5Yr |
Ann'l. 10Yr |
|
| APOYX Return (NAV) | -0.5% | 0.7% | 3.4% | 5.1% | 3.1% | 3.0% |
| APOYX Grade | D | B | C | C | B | C |
| +/- Category | -0.0% | 0.0% | 0.1% | 0.1% | 0.3% | -0.0% |
| Short-Term Inflation-Protected Bond Avg | -0.5% | 0.6% | 3.2% | 4.9% | 2.7% | 3.1% |
| APOYX Tax Cost Ratio | na | na | 1.5% | 1.3% | 1.5% | na |
APOYX Annual NAV Total ReturnsData as of 6/30/26
| 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
| APOYX Return (NAV) | 1.6% | 6.1% | 4.3% | 4.1% | -3.7% | 6.6% | 5.2% | 4.9% | 0.3% | 1.0% | 3.4% |
| APOYX Grade | A | D | C | D | B | B | D | C | B | C | C |
| +/- Category | 0.3% | -0.2% | 0.1% | -0.1% | 1.3% | 0.1% | -0.8% | -0.5% | 0.7% | -0.3% | -0.6% |
| Short-Term Inflation-Protected Bond Avg | 1.3% | 6.3% | 4.3% | 4.2% | -5.0% | 6.5% | 6.1% | 5.5% | -0.4% | 1.2% | 4.0% |
| Risk Measures | |
| Standard Deviation: | 2.1% |
| Total Risk Index: | 0.17 - Low |
| Category Risk Index: | 0.96 - Above Average |
| Category Risk Grade: | D (70% Rank) |
| Beta: | 0.29 |
| R-Squared: | 58% |
| Leveraged Fund: | No |
| Inverse Fund: | No |
| Portfolio Characteristics | |
| Equity Investment Style: | Small-Cap Growth |
| Bond Investment Style: | na Limited Sensitivity |
| Yield: | 3.7% |
| Dividend Distribution: | Quarterly |
| Cap Gains Distribution: | |
| Total Assets: | $1156 Mil |
| Fund Total Assets: | $ 26 Mil |
| Share Class Type: | Inst |
| Portfolio Turnover: | 56% |
Management Team
| Number of Managers: 3 | |||
| Longest Tenure: 18.8 years | |||
| Average Tenure: 11.0 years | |||
| Managers (Year): Platz James (2007), Castillo Miguel (2014), Bartolini Stephen (2024) | |||
Portfolio Composition (as of 3/31/26)
| # of Holdings: | 128 |
| % in Top 10 Holdings: | 66.9% |
| Fund is Non-Diversified: | No |
| % in Foreign Issues: | 3.2% |
Portfolio Allocation |
|
| Domestic Stock: | 0.0% |
| Foreign Stock: | 0.0% |
| Preferred Stock: | 0.4% |
| Domestic Bond: | 93.5% |
| Foreign Bond: | 3.2% |
| Convertible Bond: | 0.0% |
| Other: | 0.0% |
| Cash: | 3.0% |
Purchase Information
| Fund Family: | American Century Investments |
| Phone Number: | 800-345-2021 |
| Website: | www.americancentury.com |
| Status: | Open |
| Inception Date: | April 10, 2017 |
| Min. Initial Purchase: | $ 0 |
| Min. Initial IRA Purchase: | $ 0 |
| True No-Load: | Yes |
| Front Load Maximum: | 0.00% |
| Deferred Charge Maximum: | 0.00% |
| Redemption Charge Maximum: | 0.00% |
| 12b-1 Fee: | na |
Expenses and Fees | |
| Expense Ratio (%): | 0.41% ( Rating : Avg ) |
| Category Average Expense Ratio (%): | 0.52% |
| Share Class: | American Century Short Dur Inf PrBd R5 |
| Min. Subsequent Purchase: | $ 0 |
| Min. Subsequent IRA Purchase: | $ 0 |