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

As filed with the Securities and Exchange Commission on September 9, 2026

1933 Act File No. 333-150525

1940 Act File No. 811-22201

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

and/or

(Check appropriate box or boxes.)

DIREXION SHARES ETF TRUST

(Exact name of Registrant as Specified in Charter)

535 Madison Avenue, 37^th Floor

New York, New York 10022

(Address of Principal Executive Office) (Zip Code)

Registrant's Telephone Number, including Area Code: (646) 572-3390

Angela Brickl

535 Madison Avenue, 37^th Floor

New York, New York 10022

(Name and Address of Agent for Service)

Copy to:

It is proposed that this filing will become effective (check appropriate box)

If appropriate, check the following box:

EXPLANATORY NOTE

Designation of New Effective Date for Previously Filed Amendment

Post-Effective Amendment No. 455 (the "Amendment") was filed pursuant to Rule 485(a)(2) under the Securities Act of 1933, as amended, on March 5, 2026, and pursuant to Rule 485(a)(2) would become effective on May 19, 2026.

Post-Effective Amendment No. 464 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating June 18, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 473 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating July 7, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 479 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating July 21, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 485 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating August 7, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 491 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating August 14, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 494 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating August 21, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 496 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating August 26, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 499 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating August 28, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 499 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating August 28, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 503 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating September 4, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 506 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating September 9, 2026, as the new date upon which the Amendment would become effective.

Post-Effective Amendment No. 508 was filed pursuant to Rule 485(b)(1)(iii) for the sole purpose of designating September 10, 2026, as the new date upon which the Amendment would become effective.

This Post-Effective Amendment No. 509 incorporates by reference the information contained in Parts A, B, and C of the Amendment.

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 this Post-Effective Amendment No. 509 to its Registration Statement meets all the requirements for effectiveness pursuant to Rule 485(b) of the Securities Act, and the Registrant has duly caused this Post-Effective Amendment No. 509 to its Registration Statement on Form N-1A to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York and the State of New York on September 9, 2026.

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment No. 509 to its Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.