# EDGAR Filing Document

**Accession Number:** 0001710607
**File Stem:** 0001710607-25-000219
**Filing Date:** 2025-6
**Character Count:** 5266
**Document Hash:** 4c27cadb79ef164d6df1bce8ee1cb553
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001710607-25-000219.hdr.sgml**: 20250610

**ACCESSION NUMBER**: 0001710607-25-000219

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**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:** 251036764

**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)

---

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

---

### American Century Focused Large Cap Value ETF (Series ID: S000063005)

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|  |  |  |
|:---|:---|:---|
| Class Name                                   | Ticker Symbol | Class ID   |
| American Century Focused Large Cap Value ETF | FLV           | C000204443 |

---

### American Century Mid Cap Growth Impact ETF (Series ID: S000068306)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                 | Ticker Symbol | Class ID   |
| American Century Mid Cap Growth Impact ETF | MID           | C000218645 |

---

### American Century Large Cap Equity ETF (Series ID: S000068307)

---

|  |  |  |
|:---|:---|:---|
| Class Name                            | Ticker Symbol | Class ID   |
| American Century Large Cap Equity ETF | ACLC          | C000218646 |

---

### American Century Large Cap Growth ETF (Series ID: S000072412)

---

|  |  |  |
|:---|:---|:---|
| Class Name                            | Ticker Symbol | Class ID   |
| American Century Large Cap Growth ETF | ACGR          | C000228612 |

---

## 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             |

### American Century Focused Large Cap Value ETF (Series ID: S000063005)

| Class ID   | Class Name                                   | Ticker Symbol   |
|:---|:---|:---|
| C000204443 | American Century Focused Large Cap Value ETF | FLV             |

### American Century Mid Cap Growth Impact ETF (Series ID: S000068306)

| Class ID   | Class Name                                 | Ticker Symbol   |
|:---|:---|:---|
| C000218645 | American Century Mid Cap Growth Impact ETF | MID             |

### American Century Large Cap Equity ETF (Series ID: S000068307)

| Class ID   | Class Name                            | Ticker Symbol   |
|:---|:---|:---|
| C000218646 | American Century Large Cap Equity ETF | ACLC            |

### American Century Large Cap Growth ETF (Series ID: S000072412)

| Class ID   | Class Name                            | Ticker Symbol   |
|:---|:---|:---|
| C000228612 | American Century Large Cap Growth ETF | ACGR            |

---

| | |
|:---|:---|
| **Statement of Additional Information (SAI) Supplement**<br>**American Century ETF Trust** | ![newaci_logoblkg97.jpg](newaci_logoblkg97.jpg) |
| Supplement dated June 11, 2025 ■ Statement of Additional Information dated January 1, 2025 | Supplement dated June 11, 2025 ■ Statement of Additional Information 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 sixth paragraph under* Fund Investment Guidelines *on page 3.*

American Century Focused Large Cap Value ETF and American Century Large Cap Equity ETF are diversified as defined in the Investment Company Act of 1940 (Investment Company Act). Diversified means that, with respect to 75% of its total assets, a fund will not invest more than 5% of its total assets in the securities of a single issuer or own more than 10% of the outstanding voting securities of a single issuer (other than the U.S. government and securities of other investment companies). American Century Focused Dynamic Growth ETF, American Century Mid Cap Growth Impact ETF and American Century Large Cap Growth ETF are nondiversified. Nondiversified means that a fund may invest a greater percentage of its assets in a smaller number of securities than a diversified fund.

<br>©2025 American Century Proprietary Holdings, Inc. All rights reserved.<br>CL-SPL-98725 2506

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