# EDGAR Filing Document

**Accession Number:** 0001710607
**File Stem:** 0001710607-25-000273
**Filing Date:** 2025-7
**Character Count:** 16950
**Document Hash:** 9089448d6e0c0772b7b86df53d712529
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001710607-25-000273.hdr.sgml**: 20250730

**ACCESSION NUMBER**: 0001710607-25-000273

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250730

**DATE AS OF CHANGE**: 20250730

**EFFECTIVENESS DATE**: 20250730

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMERICAN CENTURY ETF TRUST
- **CENTRAL INDEX KEY:** 0001710607

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0831

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-221045
- **FILM NUMBER:** 251165271

**BUSINESS ADDRESS:**
- **STREET 1:** 4500 MAIN STREET
- **CITY:** KANSAS CITY
- **STATE:** MO
- **ZIP:** 64111
- **BUSINESS PHONE:** (816) 531-5575

**MAIL ADDRESS:**
- **STREET 1:** 4500 MAIN STREET
- **CITY:** KANSAS CITY
- **STATE:** MO
- **ZIP:** 64111

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** American Century ETF Trust
- **DATE OF NAME CHANGE:** 20170628

## Series and Classes Contracts Data

### American Century Small Cap Growth Insights ETF (Series ID: S000093803)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000262251 | American Century Small Cap Growth Insights ETF | ACSG            |

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| | |
|:---|:---|
| **Summary Prospectus &nbsp;&nbsp;&nbsp;&nbsp;** <br>August 5, 2025 | ![newaci_logoblkg97a.jpg](newaci_logoblkg97a.jpg) |
| **American Century**<sup>®</sup> **Small Cap Growth Insights ETF** | **American Century**<sup>®</sup> **Small Cap Growth Insights ETF** |
| **Ticker:** ACSG | **Exchange:** Cboe BZX Exchange, Inc. |

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|:---|
| Before you invest, you may want to review the fund's prospectus, which contains more information about the fund and its risks. You can find the fund's prospectus, reports to shareholders, and other information about the fund online at americancentury.com/etfdocs. You can also get this information at no cost by calling 833-ACI-ETFS or sending an email request to prospectus@americancentury.com. The fund's prospectus and other information are also available from financial intermediaries through which shares of the fund may be purchased or sold. |
| This summary prospectus incorporates by reference the fund's <u>[prospectus and statement of additional information](https://www.sec.gov/ix?doc=/Archives/edgar/data/1710607/000171060725000270/ck0001710607-20250730.htm)</u> (SAI) each dated August 5, 2025 (as supplemented at the time you receive this summary prospectus). The fund's SAI and Form N-CSR may be obtained, free of charge, in the same manner as the prospectus. |

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**Investment Objective**

The fund seeks long-term capital growth.

**Fees and Expenses**

The following table describes the fees and expenses you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.

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| | |
|:---|:---|
| **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the value of your investment) | **Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the value of your investment) |
| Management Fee | 0.49% |
| Other Expenses<sup>1</sup> | 0.00% |
| Total Annual Fund Operating Expenses | 0.49% |

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<sup>1</sup>*&nbsp;&nbsp;&nbsp;&nbsp;Other Expenses are based on estimated amounts for the current fiscal year.*

**Example**

The example below is intended to help you compare the costs of investing in the fund with the costs of investing in other funds. The example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods, that you earn a 5% return each year, and that the fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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| | |
|:---|:---|
| *1 year* | *3 years* |
| $50 | $157 |

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**Portfolio Turnover**

The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund's performance. Because the fund is new, the fund's portfolio turnover rate is not available.

**Principal Investment Strategies**

Under normal market conditions, the fund will invest at least 80% of its net assets in small-cap companies. The portfolio managers consider small cap companies to include those with a market capitalization that does not exceed that of the largest company in the Russell 2000<sup>®</sup> Growth Index. Though market capitalization will change from time to time, as of June 30, 2025, the market capitalization of the largest company in the Russell 2000<sup>®</sup> Growth Index was approximately $15.89 billion.

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The portfolio managers employ a bottom-up stock selection process utilizing proprietary fundamental research and systematic, risk-aware portfolio construction to invest primarily in small-cap U.S. companies exhibiting accelerating growth rates and strong or improving business fundamentals. Portfolio managers construct the portfolio using a risk-aware framework with the goal of stock selection being the primary driver of excess return.

The portfolio managers look for stocks of smaller-sized companies they believe will increase in value over time, using an investment strategy developed by the fund's investment advisor. In implementing this strategy, the portfolio managers make their investment decisions based primarily on their analysis of individual companies, rather than on broad economic forecasts. Management of the fund is based on the belief that, over the long term, stock price movements follow growth in earnings and revenues. The portfolio managers' principal analytical technique involves the identification of companies with earnings and revenues that are not only growing, but growing at an accelerating pace. This includes companies whose growth rates, although still negative, are less negative than prior periods, and companies whose growth rates are expected to accelerate. In addition to accelerating growth, the fund also may consider companies whose stocks demonstrate price strength relative to their peers. This means that the portfolio managers favor companies whose securities are the strongest performers compared to the overall market. These techniques help the portfolio managers buy or hold the stocks of companies they believe have favorable growth prospects and sell the stocks of companies whose characteristics no longer meet their criteria. Guided by this fundamental analysis, the advisor applies systematic risk controls and portfolio construction techniques to generate trade recommendations, which the portfolio managers use in an effort to improve efficiency, capacity, and liquidity.

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.

The fund is an actively managed exchange-traded fund (ETF) that does not seek to replicate the performance of a specified index. When deciding whether to buy or sell a security, and how and when to implement a trade, portfolio managers may consider the expected implementation costs and tax consequences of the trade in an attempt to gain trading efficiencies, avoid unnecessary risk, minimize tax impact, and/or enhance fund performance.

**Principal Risks**

**• Growth Stocks Risk –** Investments in growth stocks may be more volatile than other stocks and the overall stock market. These stocks are typically priced higher than other stocks because of their growth potential, which may or may not be realized.

**• Small Cap Stocks Risk –** The smaller companies in which the fund invests may be more volatile and subject to greater risk than larger companies. Smaller companies may have limited financial resources, product lines and markets, and their securities may trade less frequently and in more limited volumes than the securities of larger companies, which could lead to higher transaction costs.

**• Style Risk** – If at any time the market is not favoring the fund's growth investment style, the fund's gains may not be as big as, or its losses may be bigger than, those of other equity funds using different investment styles.

• **Market Risk** – The value of the fund's shares will go up and down based on the performance of the companies whose securities it owns and other factors generally affecting the securities market. Market risks, including political, regulatory, economic and social developments, can affect the value of the fund's investments. Natural disasters, public health emergencies, war, terrorism and other unforeseeable events may lead to increased market volatility and may have adverse long-term effects on world economies and markets generally.

• **Market Trading Risk** – The fund faces numerous market trading risks, including the potential lack of an active market for fund shares, losses investors may face from trading fund shares in secondary markets, periods of high volatility and disruption in the creation and/or redemption process of the fund. Any of these factors, among others, may lead to the fund's shares trading at a premium or discount to NAV. Thus, you may pay more (or less) than NAV when you buy shares of the fund in the secondary market, and you may receive less (or more) than NAV when you sell those shares in the secondary market. The portfolio managers cannot predict whether shares will trade above (premium), below (discount) or at NAV.

• **Diversification Risk** – The fund is classified as diversified pursuant to the Investment Company Act of 1940 (Investment Company Act), with diversification measured at the time of acquisition of investments. Subsequent market fluctuations may cause the fund to exceed such diversification limits and the fund may hold a greater percentage of its assets in a smaller number of securities. To the extent this occurs, a price change in any one of those securities may have a greater impact on the fund's share price and the fund may be more volatile.

• **Active Management Risk** – Due to its active management strategy, the fund could underperform its benchmark index and/or other funds with similar investment objectives and/or strategies.

• **Price Volatility Risk** – The value of the fund's shares may fluctuate significantly in the short term.

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• **Cash Transactions Risk** – The fund may effect its creations and redemptions for cash, rather than for in-kind securities. Therefore, it may be required to sell portfolio securities and subsequently recognize gains on such sales that the fund might not have recognized if it were to distribute portfolio securities in-kind. As such, investments in fund shares may be less tax-efficient than an investment in an ETF that distributes portfolio securities entirely in-kind. Cash transactions may have to be carried out over several days if the securities market is relatively illiquid and may involve considerable brokerage fees and taxes. Brokerage fees and taxes will be higher than if the fund sold and redeemed shares in-kind.

• **Authorized Participant Concentration Risk** – Only an authorized participant may engage in creation or redemption transactions directly with the fund. The fund may have a limited number of institutions that act as authorized participants. To the extent that these institutions exit the business or are unable to proceed with creation and/or redemption orders with respect to the fund and no other authorized participant is able to step forward to process creation and/or redemption orders, fund shares may trade at a discount to net asset value (NAV) and possibly face trading halts and/or delisting. This risk may be more pronounced in volatile markets, potentially where there are significant redemptions in ETFs generally.

• **Large Shareholder Risk** – Certain shareholders, including other funds advised by the advisor, may from time to time own a substantial amount of the shares of the fund. In addition, a third party investor, the advisor or an affiliate of the advisor, an authorized participant, a market maker, or another entity may invest in the fund and hold its investment for a limited period of time solely to facilitate commencement of the fund or to facilitate the fund's achieving a specified size or scale. There can be no assurance that any large shareholder would not redeem its investment, that the size of the fund would be maintained at such levels or that the fund would continue to meet applicable listing requirements. Redemptions by large shareholders could have a significant negative impact on the fund. In addition, transactions by large shareholders may account for a large percentage of the trading volume on the Cboe BZX Exchange, Inc. (Cboe) and may therefore have a material upward or downward effect on the market price of the shares.

• **Principal Loss Risk** – At any given time your shares may be worth less than the price you paid for them. In other words, it is possible to lose money by investing in the fund.

An investment in the fund is not a bank deposit, and it is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.

**Fund Performance**

The fund's performance history is not available as of the date of this prospectus. When the fund has investment results for a full calendar year, this section will feature charts that show annual total returns, highest and lowest quarterly returns and average annual total returns for the fund. This information indicates the volatility of the fund's historical returns from year to year. For current performance information, please visit americancentury.com.

Performance information is designed to help you see how fund returns can vary. Keep in mind that past performance (before and after taxes) does not predict how the fund will perform in the future.

**Portfolio Management**

**Investment Advisor**

American Century Investment Management, Inc.

**Portfolio Managers**

**Jackie Wagner**, Vice President and Senior Portfolio Manager, has been a member of the team that manages the fund since its inception.

**Jeff Hoernemann**, CFA, Vice President and Portfolio Manager, has been a member of the team that manages the fund since its inception.

**Stephen Quance,** Senior Vice President, Head of Global Analytics, has been a member of the team that manages the fund since its inception.

**Purchase and Sale of Fund Shares**

The fund is an ETF. Fund shares may only be bought and sold in a secondary market through a broker-dealer at a market price. Because ETF shares trade at market prices rather than NAV, shares may trade at a price greater than NAV (a premium) or less than NAV (a discount). An investor may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase shares of the fund (bid) and the lowest price a seller is willing to accept for shares of the fund (ask) when buying or selling shares in the secondary market (bid-ask spread). Investors can find information on the fund's NAV, market price, premiums and discounts, and bid-ask spread at americancentury.com.

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**Tax Information**

Fund distributions are generally taxable as ordinary income or capital gains, unless you are investing through a tax-deferred account such as a 401(k) or individual retirement account (in which case you may be taxed upon withdrawal of your investment from such account).

**Payments to Broker-Dealers and Other Financial Intermediaries**

If you purchase the fund through a broker-dealer or other financial intermediary (such as a bank), the advisor and its related companies may pay the intermediary for the sale of fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the fund over another investment. Ask your salesperson or visit your financial intermediary's website for more information.

<br>©2025 American Century Proprietary Holdings, Inc. All rights reserved.

CL-SUM-98764 2508

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