As filed with the Securities and Exchange Commission on April 20, 2011
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 þ

Post-Effective Amendment No. 62 þ

And

REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 þ

Amendment No. 64 þ

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:

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

o on _________________ pursuant to Rule 485, paragraph (b)

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

o on _________________ pursuant to Rule 485, paragraph (a)(1)

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

o on _________________ pursuant to Rule 485, paragraph (a)(2)

o 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 20th day of April, 2011.

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/ Chad C. Hallett Chad C. Hallett	Treasurer and Principal Financial Officer	April 20, 2011
/s/ Bonny E. Boatman* Bonny E. Boatman	Trustee	April 20, 2011
/s/ Dwight D. Churchill* Dwight D. Churchill	Trustee	April 20, 2011
/s/ David M. Kelly* David M. Kelly	Trustee	April 20, 2011
/s/ Frank Nesvet* Frank Nesvet	Trustee	April 20, 2011
/s/ Carl G. Verboncoeur* Carl G. Verboncoeur	Trustee	April 20, 2011
/s/ James E. Ross	Trustee, President and	April 20, 2011
James E. Ross	Principal Executive Officer
*By: /s/ Ryan M. Louvar Ryan M. Louvar
As Attorney-in-Fact
Pursuant to Power of Attorney