As filed with the Securities and Exchange Commission on October 29, 2018

Registration Nos. 333-89822; 811-21114

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form N-1A

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933	☒
Pre-Effective Amendment No.
Post-Effective Amendment No. 207	☒

and/or

REGISTRATION STATEMENT

UNDER

THE INVESTMENT COMPANY ACT OF 1940	☒
Amendment No. 216	☒

ProShares Trust

(Exact name of Registrant as Specified in Trust Instrument)

7501 Wisconsin Avenue,

Suite 1000E

Bethesda, MD 20814

(Address of Principal Executive Office) (Zip Code)

(240) 497-6400

(Area Code and Telephone Number)

Michael L. Sapir, CEO

ProShare Advisors LLC

7501 Wisconsin Avenue, Suite 1000E

Bethesda, MD 20814

(Name and Address of Agent for Service)

with copies to:

John Loder, Esq. Ropes & Gray LLP Prudential Tower 800 Boylston Street Boston, MA 02199-3600 Richard F. Morris, Esq. ProShare Advisors LLC 7501 Wisconsin Avenue Suite 1000E Bethesda, MD 20814

Approximate date of Proposed Public Offering:

It is proposed that this filing will become effective:

☒ immediately upon filing pursuant to paragraph (b)

☐ 60 days after filing pursuant to paragraph (a)(1)

☐ on                 pursuant to paragraph (a)(1)

☐ 75 days after filing pursuant to paragraph (a)(2)

☐ on (date) pursuant to paragraph (a)(2) of rule 485.

If appropriate, check the following:

☐ This post-effective amendment designates a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant has duly caused this post-effective amendment (the “Amendment”) to its Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized, in the City of Bethesda and the State of Maryland on October 29, 2018.

ProShares Trust
By:	/s/ Todd B. Johnson
	Todd B. Johnson President

Pursuant to the requirements of the Securities Act of 1933, this Amendment to the Registration Statement has been signed below by the following persons in the capacities indicated.

Signature	Title	Date
/s/ Michael L. Sapir* Michael L. Sapir	Trustee, Chairman	October 29, 2018
/s/ Russell S. Reynolds, III* Russell S. Reynolds, III	Trustee	October 29, 2018
/s/ Michael C. Wachs* Michael C. Wachs	Trustee	October 29, 2018
/s/ William D. Fertig* William D. Fertig	Trustee	October 29, 2018
/s/ Todd B. Johnson Todd B. Johnson	President	October 29, 2018
/s/ Troy A. Sheets Troy A. Sheets	Treasurer	October 29, 2018

* By:	/s/ Richard F. Morris
	Richard F. Morris
	As Attorney-in-fact

Date: October 29, 2018

Exhibit Index

EXHIBIT NUMBER	DESCRIPTION
EX-101.INS	XBRL Instance Document
EX-101.SCH	XBRL Taxonomy Extension Schema Document
EX-101.CAL	XBRL Taxonomy Extension Calculation Linkbase
EX-101.DEF	XBRL Taxonomy Extension Definition Linkbase
EX-101.LAB	XBRL Taxonomy Extension Label Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase