# EDGAR Filing Document

**Accession Number:** 0001710607
**File Stem:** 0001710607-25-000215
**Filing Date:** 2025-6
**Character Count:** 3744
**Document Hash:** cd4401dd0e5e01ca315532d02e8499a5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001710607-25-000215.hdr.sgml**: 20250610

**ACCESSION NUMBER**: 0001710607-25-000215

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 17

**FILED AS OF DATE**: 20250610

**DATE AS OF CHANGE**: 20250610

**EFFECTIVENESS DATE**: 20250610

**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:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-221045
- **FILM NUMBER:** 251036758

**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 Focused Dynamic Growth ETF (Series ID: S000063004)

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|  |  |  |
|:---|:---|:---|
| Class Name                                  | Ticker Symbol | Class ID   |
| American Century Focused Dynamic Growth ETF | FDG           | C000204442 |

---

## Series and Classes Contracts Data

### American Century Focused Dynamic Growth ETF (Series ID: S000063004)

| Class ID   | Class Name                                  | Ticker Symbol   |
|:---|:---|:---|
| C000204442 | American Century Focused Dynamic Growth ETF | FDG             |

?xml version='1.0' encoding='ASCII'? ck0001710607-20250610

---

| | |
|:---|:---|
| **Summary Prospectus and Prospectus Supplement**<br>**American Century Focused Dynamic Growth ETF** | ![newaci_logoblkg97.jpg](ck0001710607-20250610_g1.jpg) |
| Supplement dated June 11, 2025 ■ Prospectus and Summary Prospectus dated January 1, 2025 | Supplement dated June 11, 2025 ■ Prospectus and Summary Prospectus dated January 1, 2025 |

---

At a special meeting of shareholders held on June 10, 2025, shareholders approved the change in designation under the Investment Company Act of 1940 for American Century Focused Dynamic Growth ETF (the "Fund") from diversified to non-diversified.

The change will be effective June 11, 2025.

*The following replaces the* Diversification Risk *under* Principal Risks *in the summary prospectus and on page 3 of the prospectus.*

• **Nondiversification Risk —** The fund is classified as nondiversified. A nondiversified fund may invest a greater percentage of its assets in a smaller number of securities than a diversified fund. This gives the portfolio managers the flexibility to hold large positions in a smaller number of securities. If so, a price change in any one of those securities may have a greater impact on the fund's share price than would be the case in a diversified fund and the fund may be more volatile than if it was diversified.

*The following replaces the* Diversification Risk *under* What are the principal risks of investing in the fund? *on page 9 of the prospectus.*

• **Nondiversification Risk —** The fund is classified as nondiversified. A nondiversified fund may invest a greater percentage of its assets in a smaller number of securities than a diversified fund. This gives the portfolio managers the flexibility to hold large positions in a smaller number of securities. If so, a price change in any one of those securities may have a greater impact on the fund's share price than would be the case in a diversified fund and the fund may be more volatile than if it was diversified.©2025 American Century Proprietary Holdings, Inc. All rights reserved.CL-SPL-98724 2506