[Janus Letterhead]

June 26, 2017

EDGAR Operations Branch

Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, D.C. 20549-0505

Dear Sir or Madam:

On behalf of the Registrant, and pursuant to Rule 497(e) under the Securities Act of 1933, as amended (the “1933 Act”), transmitted herewith for filing is an interactive data file in the manner provided by Rule 405(b)(2) of Regulation S-T and General Instruction
C.3.(g) of Form N-1A, containing the risk/return summary information provided in the Supplement dated June 5, 2017 to the currently effective prospectus for The Organics ETF filed pursuant to Rule 497(e) under the 1933 Act.

Please call me at (303) 782-3054 with any questions regarding this filing.

Respectfully,

/s/ Adithya Attawar

Adithya Attawar

Assistant Secretary

Enclosure (via EDGAR only)