Post-Effective Amendment to Post-Effective Amendment by Investment Company (Form 485BXT)

and/or

It is proposed that this filing will become effective:

If appropriate, check the following box:

This filing relates solely to the REX-Osprey™ ETH + Staking ETF and the REX-Osprey™ SOL + Staking ETF, each a series of ETF Opportunities Trust.

This Post-Effective Amendment to the Registration Statement on Form N-1A is filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating January 9, 2026 as the new effective date for Post-Effective Amendment No. 327 to the Registration Statement filed on July 29, 2025 for the REX-Osprey™ ETH + Staking ETF and the REX-Osprey™ SOL + Staking ETF. This Post-Effective Amendment incorporates by reference the Prospectus and Statement of Additional Information contained in Post-Effective Amendment No. 327 to the Registration Statement. This Post-Effective Amendment incorporated by reference the Part C contained in Post-Effective Amendment No. 395 to the Registration Statement.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the "Securities Act"), and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under Rule 485(b) of the Securities Act and has duly caused this Post-Effective Amendment No. 520 to the Registrant's Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Richmond, Commonwealth of Virginia on the 18th day of December, 2025.

ETF OPPORTUNITIES TRUST

By:   /s/ Karen M. Shupe

Karen M. Shupe

Treasurer and Principal Executive Officer

Pursuant to the requirements of the Securities Act of 1933, as amended, this Post-Effective Amendment No. 520 to the Registration Statement on Form N-1A has been signed below by the following persons in the capacities and on the dates indicated.

*Attorney-in-fact pursuant to Powers of Attorney