Prospectus Certification by Investment Company (Form 497J)

VIA EDGAR

U.S. Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, D.C. 20549

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended (the "Securities Act"), the undersigned has been authorized by the Registrant to certify that the forms of the Prospectuses and Statement of Additional Information that would have been filed pursuant to Rule 497(c) under the Securities Act on behalf of the following series of the Registrant upon the effectiveness of Post-Effective Amendment No. 73/76 of the Registrant's Registration Statement on Form N-1A ("Amendment") would not have differed from that contained in the Amendment, which is the most recent amendment to such Registration Statement and was filed electronically on February 27, 2026:

BondBloxx USD High Yield Bond Industrial Sector ETF

BondBloxx USD High Yield Bond Telecom, Media & Technology Sector ETF

BondBloxx USD High Yield Bond Healthcare Sector ETF

BondBloxx USD High Yield Bond Financial & REIT Sector ETF

BondBloxx USD High Yield Bond Energy Sector ETF

BondBloxx USD High Yield Bond Consumer Cyclicals Sector ETF

BondBloxx USD High Yield Bond Consumer Non-Cyclicals Sector ETF

BondBloxx USD High Yield Bond Sector Rotation ETF

BondBloxx BB Rated USD High Yield Corporate Bond ETF

BondBloxx B Rated USD High Yield Corporate Bond ETF

BondBloxx CCC Rated USD High Yield Corporate Bond ETF

BondBloxx JP Morgan USD Emerging Markets 1-10 Year Bond ETF

BondBloxx Bloomberg Six Month Target Duration US Treasury ETF

BondBloxx Bloomberg One Year Target Duration US Treasury ETF

BondBloxx Bloomberg Two Year Target Duration US Treasury ETF

BondBloxx Bloomberg Three Year Target Duration US Treasury ETF

BondBloxx Bloomberg Five Year Target Duration US Treasury ETF

BondBloxx Bloomberg Seven Year Target Duration US Treasury ETF

BondBloxx Bloomberg Ten Year Target Duration US Treasury ETF

BondBloxx Bloomberg Twenty Year Target Duration US Treasury ETF

BondBloxx BBB Rated 1-5 Year Corporate Bond ETF

BondBloxx BBB Rated 5-10 Year Corporate Bond ETF

BondBloxx BBB Rated 10+ Year Corporate Bond ETF

BondBloxx IR+M Tax-Aware Short Duration ETF

BondBloxx IR+M Tax-Aware Intermediate Duration ETF

BondBloxx IR+M Tax-Aware ETF for California Residents

BondBloxx IR+M Tax-Aware ETF for Massachusetts Residents

BondBloxx IR+M Tax-Aware ETF for New York Residents

BondBloxx Private Credit CLO ETF

Please direct any questions or comments concerning this filing to the undersigned at (415) 315-6328.