497 1 acetft62124stasai497.htm 497 Document

Statement of Additional Information (SAI) Supplement

American Century ETF Trust

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Supplement dated June 21, 2024 n Statement of Additional Information dated January 1, 2024
Michael Li, Vice President and Senior Portfolio Manager, will no longer serve as portfolio manager for American Century Focused Dynamic Growth ETF effective September 15, 2024.

The changes below will be effective as of July 1, 2024.

The following entries are added in the Accounts Managed table on pages 24-25 of the SAI:
Accounts Managed
  
Registered Investment
Companies (e.g.,
American Century
Investments funds and
American Century
Investments -
subadvised funds)  
Other Pooled
Investment Vehicles
(e.g., commingled trusts
and 529 education
savings plans)  
Other Accounts (e.g.,
separate accounts and
corporate accounts,
including incubation
strategies and
corporate money)  
John Rabroker1
Number of Accounts221
 Assets
$2.0 billion2
$282.0 million$851.0 thousand
1 Information provided as of June 18, 2024.
2 Includes $234.1 million in American Century Focused Dynamic Growth ETF.

The following entries are added in the Ownership of Securities table on page 27 of the SAI:

Ownership of Securities 
 Aggregate Dollar Range of Securities in Fund
American Century Focused Dynamic Growth
John Rabroker1
A
1 Information provided as of June 18, 2024.

Ranges: A – none; B – $1-$10,000; C – $10,001-$50,000; D – $50,001-$100,000; E – $100,001-$500,000;
F – $500,001-$1,000,000; G – More than $1,000,000.




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CL-SPL-98476 2406