Roundhill ETF Trust

05/18/2026 | Press release | Distributed by Public on 05/18/2026 12:30

Prospectus Certification by Investment Company (Form 497J)

Richard J. Coyle

Partner

Chapman and Cutler LLP

320 South Canal Street

Chicago, Illinois 60606

T 312.845.3724

[email protected]

May 18, 2026

U.S. Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, D.C. 20549

Re: Roundhill ETF Trust
(Registration Nos. 333-273052; 811-23887)

Ladies and Gentlemen:

On behalf of Roundhill ETF Trust (the "Registrant"), in accordance with the provisions of Rule 497(j) of Regulation C under the Securities Act of 1933 (the "Securities Act"), this letter serves to certify that the recent amendment to the Registration Statement on Form N-1A (the "Registration Statement") for the Registrant for Roundhill HALO ETF, a series of the Registrant, does not differ from that which would have been filed pursuant to Rule 497(c) of the Securities Act. Post-Effective Amendment No. 252 was filed electronically with the Securities and Exchange Commission on May 13, 2026.

If we may cooperate with you in any way in the processing of this registration statement, please telephone the undersigned at (312) 845-3724.

Very truly yours,
Chapman and Cutler llp
By: /s/ Morrison C. Warren
Morrison C. Warren
Cc: Walter Draney, Chapman and Cutler LLP

Richard Coyle, Chapman and Cutler LLP

Enclosures

Roundhill ETF Trust published this content on May 18, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on May 18, 2026 at 18:31 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]