As filed with the Securities and Exchange Commission on June 29, 2012

Securities Act File No. 333-57793

Investment Company Act of 1940 File No. 811-08839

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933	x
Post-Effective Amendment No. 87	x
And
REGISTRATION STATEMENT
UNDER
THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 89

SPDR^® SERIES TRUST

(Exact Name of Registrant as Specified in Charter)

One Lincoln Street

Boston, Massachusetts 02111

(Address of Principal Executive Offices)

Registrant’s Telephone Number: (866) 787-2257

Ryan M. Louvar, Esq.

State Street Bank and Trust Company

One Lincoln Street/CPH0326

Boston, Massachusetts 02111

(Name and Address of Agent for Service)

Copies to:

W. John McGuire, Esq.

Morgan, Lewis and Bockius LLP

1111 Pennsylvania Ave., NW

Washington, DC 20004

It is proposed that this filing will become effective:

x immediately upon filing pursuant to Rule 485, paragraph (b)

¨ on                      pursuant to Rule 485, paragraph (b)

¨ 60 days after filing pursuant to Rule 485, paragraph (a)(1)

¨ on                      pursuant to Rule 485, paragraph (a)(1)

¨ 75 days after filing pursuant to Rule 485, paragraph (a)(2)

¨ on                      pursuant to Rule 485, paragraph (a)(2)

¨ 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, as amended, 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) under the Securities Act and has caused this amendment to the registration statement to be signed on its behalf by the undersigned, duly authorized, in the City of Boston and Commonwealth of Massachusetts on the 29^th day of June, 2012.

SPDR® SERIES TRUST
By:	/s/ James E. Ross*
	James E. Ross
	President

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended, this amendment to the registration statement has been signed below by the following persons in the capacities and on the date indicated:

SIGNATURES	TITLE	DATE
/s/ Bonny E. Boatman*	Trustee	June 29, 2012
Bonny E. Boatman
/s/ Dwight D. Churchill*	Trustee	June 29, 2012
Dwight D. Churchill
/s/ David M. Kelly*	Trustee	June 29, 2012
David M. Kelly
/s/ Frank Nesvet*	Trustee	June 29, 2012
Frank Nesvet
/s/ Carl G. Verboncoeur*	Trustee	June 29, 2012
Carl G. Verboncoeur
/s/ James E. Ross*	Trustee, President and Principal Executive Officer	June 29, 2012
James E. Ross
/s/ Chad C. Hallett	Treasurer and Principal Financial Officer	June 29, 2012
Chad C. Hallett

*By:	/s/ Scott E. Habeeb
	Scott E. Habeeb
	As Attorney-in-Fact Pursuant to Power of Attorney