Investment Strategy - American Century Quantitative Equity Funds Prospectus |
Nov. 01, 2026 |
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| DISCIPLINED CORE EQUITY FUND | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Principal Investment Strategies |
| Strategy Narrative [Text Block] | In selecting stocks for the fund, the portfolio managers use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks, primarily large capitalization, publicly traded U.S. companies from most attractive to least attractive based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. Under normal market conditions, at least 80% of the fund’s net assets will be invested in equity securities. The portfolio managers generally sell a stock when they believe it has become less attractive relative to other opportunities, its risk characteristics outweigh its return opportunity or specific events alter its prospects.
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| Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] | In selecting stocks for the fund, the portfolio managers use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks, primarily large capitalization, publicly traded U.S. companies from most attractive to least attractive based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return.
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| Rule 35d-1 Eighty Percent Investment Policy [Text Block] | Under normal market conditions, at least 80% of the fund’s net assets will be invested in equity securities.
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| DISCIPLINED GROWTH FUND | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Principal Investment Strategies |
| Strategy Narrative [Text Block] | Under normal market conditions, the fund invests at least 80% of its net assets in securities of growth companies. The portfolio managers consider a company to be a growth company if it meets any of the following criteria: (i) it is included in an appropriate third-party growth-oriented index; or (ii) its one-year or three-year earnings per share growth percentage, one-year earnings per share growth percentage forecast, or sales growth percentage is greater than the median of a broad-based securities market index. In selecting stocks for the fund, the portfolio managers initially identify an eligible universe of growth stocks then use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks, primarily large capitalization, publicly traded U.S. companies from most attractive to least attractive based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors such as economic events, corporate announcements, risk management, transaction costs and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. The portfolio managers generally sell a stock when they believe it has become less attractive relative to other opportunities, its risk characteristics outweigh its return opportunity or specific events alter its prospects. The fund may engage in active and frequent trading of portfolio securities to achieve its principal investment strategies. This may cause higher transaction costs and may affect performance. It may also result in the realization and distribution of capital gains.
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| Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] | The portfolio managers consider a company to be a growth company if it meets any of the following criteria: (i) it is included in an appropriate third-party growth-oriented index; or (ii) its one-year or three-year earnings per share growth percentage, one-year earnings per share growth percentage forecast, or sales growth percentage is greater than the median of a broad-based securities market index. |
| Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] | In selecting stocks for the fund, the portfolio managers initially identify an eligible universe of growth stocks then use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks, primarily large capitalization, publicly traded U.S. companies from most attractive to least attractive based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors such as economic events, corporate announcements, risk management, transaction costs and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return.
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| Rule 35d-1 Eighty Percent Investment Policy [Text Block] | Under normal market conditions, the fund invests at least 80% of its net assets in securities of growth companies. |
| DISCIPLINED VALUE FUND | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Principal Investment Strategies |
| Strategy Narrative [Text Block] | Under normal market conditions, the portfolio managers will invest at least 80% of the fund’s net assets in securities of value companies. For purposes of this test, the portfolio managers consider a company to be a value company if it meets any of the following criteria: •it is included in an appropriate third-party value-oriented index; •its price-to-book ratio, price-to-cash flow ratio, price-to-earnings ratio, or enterprise value to EBITDA ratio is less than the median of a broad-based securities market index; •its book-to-market ratio is greater than the median of a broad-based securities market index; or •it pays a dividend. In selecting stocks for the fund, the portfolio managers use quantitative and qualitative management techniques in a multi-step process. The managers evaluate stocks, primarily large capitalization, publicly traded U.S. companies based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. They also attempt to create a dividend yield that will be greater than that of the S&P 500® Index. The portfolio managers generally sell a stock when they believe it has become less attractive relative to other opportunities, its risk characteristics outweigh its return opportunity or specific events alter its prospects.
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| Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] | For purposes of this test, the portfolio managers consider a company to be a value company if it meets any of the following criteria: •it is included in an appropriate third-party value-oriented index; •its price-to-book ratio, price-to-cash flow ratio, price-to-earnings ratio, or enterprise value to EBITDA ratio is less than the median of a broad-based securities market index; •its book-to-market ratio is greater than the median of a broad-based securities market index; or •it pays a dividend.
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| Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] | In selecting stocks for the fund, the portfolio managers use quantitative and qualitative management techniques in a multi-step process. The managers evaluate stocks, primarily large capitalization, publicly traded U.S. companies based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. They also attempt to create a dividend yield that will be greater than that of the S&P 500® Index. |
| Rule 35d-1 Eighty Percent Investment Policy [Text Block] | Under normal market conditions, the portfolio managers will invest at least 80% of the fund’s net assets in securities of value companies. |
| GLOBAL GOLD FUND | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Principal Investment Strategies |
| Strategy Narrative [Text Block] | Under normal market conditions, the fund invests at least 80% of its net assets in companies that are engaged in mining, processing, fabricating, distributing, exploring for or otherwise dealing in gold. The fund may change this 80% policy only upon 60 days’ prior written notice to shareholders. In selecting stocks for the fund, the portfolio managers use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks from most attractive to least attractive based on an objective set of measures, including valuation, quality, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. The portfolio managers generally sell a stock when they believe it has become less attractive relative to other opportunities, its risk characteristics outweigh its return opportunity or specific events alter its prospects.
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| Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] | In selecting stocks for the fund, the portfolio managers use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks from most attractive to least attractive based on an objective set of measures, including valuation, quality, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. |
| Rule 35d-1 Eighty Percent Investment Policy [Text Block] | Under normal market conditions, the fund invests at least 80% of its net assets in companies that are engaged in mining, processing, fabricating, distributing, exploring for or otherwise dealing in gold. The fund may change this 80% policy only upon 60 days’ prior written notice to shareholders. |
| SMALL COMPANY FUND | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Principal Investment Strategies |
| Strategy Narrative [Text Block] | Under normal market conditions, the fund will invest at least 80% of its net assets in stocks of smaller-capitalization U.S. companies. The portfolio managers consider small companies to be those that, at the time of investment, have a market capitalization not greater than that of the largest company in the Russell 2000® Index. Though the market-capitalization and composition of the Russell 2000® Index are subject to change, as of September 30, 2026, the market-capitalization of the largest company in the Russell 2000® Index was approximately $12.7 billion. The portfolio managers use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks, primarily smaller U.S. companies, from most attractive to least attractive based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. The fund may invest in equity securities issued by real estate investment trusts (REITs). The portfolio managers generally sell a stock when they believe it has become less attractive relative to other opportunities, its risk characteristics outweigh its return opportunity or specific events alter its prospects. The fund may engage in active and frequent trading of portfolio securities to achieve its principal investment strategies. This may cause higher transaction costs and may affect performance. It may also result in the realization and distribution of capital gains.
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| Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] | The portfolio managers consider small companies to be those that, at the time of investment, have a market capitalization not greater than that of the largest company in the Russell 2000® Index. Though the market-capitalization and composition of the Russell 2000® Index are subject to change, as of September 30, 2026, the market-capitalization of the largest company in the Russell 2000® Index was approximately $12.7 billion. |
| Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] | The portfolio managers use quantitative and qualitative management techniques in a multi-step process. First, the managers rank stocks, primarily smaller U.S. companies, from most attractive to least attractive based on an objective set of measures, including valuation, quality, growth, and/or sentiment. The portfolio managers then review the output of the quantitative model and also consider other factors, such as economic events, corporate announcements, risk management, transaction costs, and/or liquidity, to build a portfolio that they believe will provide a balance between risk and return. The fund may invest in equity securities issued by real estate investment trusts (REITs).
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| Rule 35d-1 Eighty Percent Investment Policy [Text Block] | Under normal market conditions, the fund will invest at least 80% of its net assets in stocks of smaller-capitalization U.S. companies. |
| UTILITIES FUND | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Principal Investment Strategies |
| Strategy Narrative [Text Block] | Under normal market conditions, the fund invests at least 80% of its net assets in equity securities of companies engaged in the utilities industry. The fund may change this 80% policy only upon 60 days’ prior written notice to shareholders. The managers consider a company to be engaged in the utilities industry if: •the company’s securities are listed in at least one index that is made up exclusively of companies engaged in one or more of the following industries: electricity, natural gas, telecommunications services, cable television, water or sanitation services; or •the company derives 50% or more of its revenues or net profits from the ownership or operation of facilities used to provide electricity, natural gas, telecommunications services, cable television, water or sanitation services. The portfolio managers use quantitative and qualitative management techniques as well as risk controls to construct the fund’s portfolio. The quantitative process involves ranking stocks based on their growth and valuation characteristics. This ranking may be modified by the portfolio managers after they evaluate qualitative factors such as regulatory environment, industry conditions and company specific events. Finally, the managers use a quantitative model to build a portfolio of stocks that they believe will provide the optimal balance between risk and expected return. The fund may also invest a portion of its assets in foreign securities and debt securities when these securities meet the portfolio managers’ standards of selection. The portfolio managers generally sell a stock when they believe it has become less attractive relative to other opportunities, its risk characteristics outweigh its return opportunity or specific events alter its prospects.
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| Summary of Definition of Rule 35d-1 Term in Fund Name [Text Block] | The managers consider a company to be engaged in the utilities industry if: •the company’s securities are listed in at least one index that is made up exclusively of companies engaged in one or more of the following industries: electricity, natural gas, telecommunications services, cable television, water or sanitation services; or •the company derives 50% or more of its revenues or net profits from the ownership or operation of facilities used to provide electricity, natural gas, telecommunications services, cable television, water or sanitation services.
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| Summary of Selection Criteria for Rule 35d-1 Term in Fund Name [Text Block] | The portfolio managers use quantitative and qualitative management techniques as well as risk controls to construct the fund’s portfolio. The quantitative process involves ranking stocks based on their growth and valuation characteristics. This ranking may be modified by the portfolio managers after they evaluate qualitative factors such as regulatory environment, industry conditions and company specific events. Finally, the managers use a quantitative model to build a portfolio of stocks that they believe will provide the optimal balance between risk and expected return. The fund may also invest a portion of its assets in foreign securities and debt securities when these securities meet the portfolio managers’ standards of selection.
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| Rule 35d-1 Eighty Percent Investment Policy [Text Block] | Under normal market conditions, the fund invests at least 80% of its net assets in equity securities of companies engaged in the utilities industry. The fund may change this 80% policy only upon 60 days’ prior written notice to shareholders. |