Janus Detroit Street Trust

09/18/2026 | Press release | Distributed by Public on 09/18/2026 11:25

Prospectus Certification by Investment Company (Form 497J)

[Janus Henderson Letterhead]

September 18, 2026

EDGAR Operations Branch

Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, D.C. 20549-0505

Re: JANUS DETROIT STREET TRUST (the "Registrant")
1933 Act File No. 333-207814
1940 Act File No. 811-23112

Dear Sir or Madam:

Pursuant to Rule 497(j) of Regulation C under the Securities Act of 1933, as amended (the "1933 Act"), the undersigned hereby certifies on behalf of the Registrant:

1. There are no changes to the Prospectus and Statement of Additional Information ("SAI") from the forms of the Prospectus and SAI that were filed in Post-Effective Amendment No. 103 ("PEA No. 103") on September 14, 2026, pursuant to Rule 485(b) under the 1933 Act for Janus Henderson International Core Alpha ETF.
2. The text of PEA No. 103 has been filed electronically.

If you have any questions regarding this filing, please call me at (303) 336-7903 or email me at [email protected].

Respectfully,

/s/ Cara Owen

Cara Owen, Esq.

Vice President, Secretary, and Chief Legal Officer of the Registrant

Enclosure (via EDGAR)

cc: Eric S. Purple, Esq.
Janus Detroit Street Trust published this content on September 18, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on September 18, 2026 at 17:25 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 If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]