YTD Total Return As of 01/28/2026 | 2.15% |
Nav As of 01/28/2026 | $16.12 |
Nav Change (-$0.13) | -0.80% |
Designed as an opportunistic growth fund that seeks to build capital over time by investing primarily in growing midsize companies.
Key Facts
Investment Objective | Seeks long-term capital growth |
Inception Date | 09/28/2007 |
Morningstar Category | Mid-Cap Growth |
Benchmark | Russell Midcap Growth IndexA |
Total Assets | $5,653,099,954 As of 12/31/2025 |
Total Holdings | 81 As of 11/30/2025 |
Distribution Frequency | Annual |
Morningstar Overall Rating Based on risk-adjusted return | Out of 472 funds. Mid-Cap Growth category As of 12/31/2025 |
Fees
| Gross Expense Ratio | 1.50% |
Trading Information
| Ticker | ATHWX |
| CUSIP | 02508H683 |
Morningstar ratings vary among share classes and are based on historical risk-adjusted total returns.
Fees
| Gross Expense Ratio | 1.50% |
Trading Information
| Ticker | ATHWX |
| CUSIP | 02508H683 |
Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value fluctuates. Redemption value may be more or less than original cost. Returns less than one year are not annualized. Index performance does not represent the fund's performance. It is not possible to invest directly in an index.
Average annual total returns illustrate the annual compounded returns that would have produced the cumulative total return if the fund's performance had remained constant throughout the period indicated. Returns for periods less than one year are not annualized. For periods prior to the inception of a class, performance is for the oldest class, restated with applicable fees, if any.
Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value fluctuates. Redemption value may be more or less than original cost. Returns less than one year are not annualized. Index performance does not represent the fund's performance. It is not possible to invest directly in an index.
Past performance is no guarantee of future results. Investment returns will fluctuate and it is possible to lose money.
FREQUENCY
Yearly
| Total Paid | Ordinary Dividends | Reinvest Price | |
|---|---|---|---|
| 12/16/2025 | $4.6004 | -- | $15.88 |
| Overall | Out of 472 funds. Mid-Cap Growth category |
| 3 Year | Out of 472 funds |
| 5 Year | Out of 446 funds |
| 10 Year | Out of 371 funds |
Investment Style
Morningstar ratings vary among share classes and are based on historical risk-adjusted total returns.
| Risk Measures | |
|---|---|
| Alpha | -1.76 |
| Beta | 1.00 |
| R-Squared | 0.98 |
| Standard Deviation | 18.53 |
| Sharpe Ratio | 0.53 |
Relative to the Russell Midcap Growth Index
Past performance is no guarantee of future results. Investment returns will fluctuate and it is possible to lose money.
As of 12/31/2025
| Domestic Stock | 96% |
| Foreign Stock | 3% |
| Cash and Cash Equivalents | 1% |
Due to rounding, these values may exceed 100%.
Negative weights may be due to open security or capital stock
trades at period end and/or unrealized loss on derivative positions as a percent of net assets at period end.
As of 11/30/2025
81 Equity Issues
As of 12/31/2025
| Consumer Discretionary | 21% |
| Industrials | 20% |
| Information Technology | 19% |
| Health Care | 19% |
| Financials | 8% |
| Communication Services | 4% |
| Utilities | 3% |
| Energy | 3% |
| Consumer Staples | 2% |
| Materials | 2% |
Due to rounding, these values may exceed 100%
As of 12/31/2025
| Hilton Worldwide Holdings Inc | 3.69% |
| Howmet Aerospace Inc | 3.21% |
| Royal Caribbean Cruises Ltd | 3.12% |
| Vistra Corp | 2.92% |
| Cloudflare Inc | 2.58% |
| Carvana Co | 2.39% |
| Vertiv Holdings Co | 2.19% |
| Fair Isaac Corp | 2.15% |
| Monolithic Power Systems Inc | 2.08% |
| Dexcom Inc | 2.01% |
| % of Top Portfolio Holdings | 26.34% |
Due to rounding, these values may exceed 100%.
Negative weights may be due to open security or capital
stock trades at period end and/or unrealized loss on derivative positions as a percent of net assets at period
end.
As of 12/31/2025
Due to rounding, these values may exceed 100%
Portfolio Manager
How to Buy
Individual investors: This share class is only available for purchase through an employer sponsored retirement plan. Call 1-800-345-3533 to speak to a business retirement services representative. However, you can purchase the investor share class of this fund on the website.
View Investor Share ClassFinancial Advisors: Contact your wholesaler at 1-800-345-6488 for more information.
The value and/or returns of a portfolio will fluctuate with market and economic conditions.
Historically, small- and/or mid-cap stocks have been more volatile than the stock of larger, more-established companies. Smaller companies may have limited resources, product lines and markets, and their securities may trade less frequently and in more limited volumes than the securities of larger companies.
Please see the prospectus for details about sales charges.
The gross expense ratio is the fund's total annual operating costs, expressed as a percentage of the fund's average net assets for a given time period. It is gross of any fee waivers or expense reimbursement. The net expense ratio is the expense ratio after the application of any waivers or reimbursement. This is the actual ratio that investors paid during the fund's most recent fiscal year. Please see the prospectus for more information.
Investor Class Shares: Minimum initial investment is $1,000 for IRA and CESA accounts, and $2,500 for non-retirement accounts, but these minimums are waived with an initial investment of at least $500 per account and automatic investments of at least $100 per month. Non-Retirement Accounts: If your account balance falls below the minimum, or if you cancel your automatic monthly investment plan prior to reaching the minimum, American Century Investments may redeem the account and send the proceeds to you. Prior to doing so, we will notify you and give you 90 days to meet the minimum or reinstate your automatic monthly investment plan.
Measures the performance of those Russell Midcap Index companies (the 800 smallest of the 1,000 largest publicly traded U.S. companies, based on total market capitalization) with higher price-to-book ratios and higher forecasted growth values.
Only Investor Class shares are made available to investors directly. Advisor, A, C, I, and Y Classes of shares are only available for purchase by institutions or other financial intermediaries. R, R5, and R6 Classes of shares are only available for purchase by group employer-sponsored retirement plans. Review definitions and minimums for all share classes.
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