As filed with the Securities and Exchange Commission on May 6, 2013

Securities Act File No. 33-21722

Investment Company Act File No. 811-5550

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

FORM N-1A

Registration Statement Under The Securities Act of 1933	x
Pre-Effective Amendment No.	o

Post-Effective Amendment No. 43 x

Registration Statement Under The Investment Company Act of 1940	x
and/or

Amendment No. 41   x

(Check appropriate box or boxes)

THE ALGER PORTFOLIOS

(Exact Name of Registrant as Specified in Charter)

360 Park Avenue South, New York, New York	10010
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s Telephone Number, including Area Code:       212-806-8800

Hal Liebes, Esq.

Fred Alger Management, Inc.

360 Park Avenue South

New York, NY 10010

(Name and Address of Agent for Service)

copy to:

Gary Granik, Esq.

Stroock & Stroock & Lavan LLP

180 Maiden Lane

New York, NY 10038

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

x  immediately upon filing pursuant to paragraph (b), or

o  on [date] pursuant to paragraph (b), or

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

o  on [date] pursuant to paragraph (a)(1); or

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

o  on [date] pursuant to paragraph (a)(2) of Rule 485

If appropriate, check the following box:

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 and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all the requirements for effectiveness of this Amendment to the Registration Statement under Rule 485(b) under the Securities Act of 1933 and has duly caused this Amendment to the Registration Statement to be signed on its behalf by the undersigned, thereto duly authorized, in the City of New York and State of New York on the 6th day of May, 2013.

THE ALGER PORTFOLIOS

By:	/s/ Hal Liebes
	Hal Liebes, President

ATTEST: /s/ Lisa A. Moss

Lisa A. Moss, Assistant Secretary

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 and on the dates indicated:

SIGNATURE	TITLE	DATE
/s/  Hal Liebes	President	May 6, 2013
Hal Liebes	(Chief Executive Offficer)
/s/  Michael D. Martins	Treasurer	May 6, 2013
Michael D. Martins	(Chief Financial Offices)
*	Trustee	May 6, 2013
Charles F. Baird
*	Trustee	May 6, 2013
Roger P. Cheever
*	Trustee	May 6, 2013
Lester L. Colbert, Jr.
*	Trustee	May 6, 2013
Hilary M. Alger
*	Trustee	May 6, 2013
Nathan E. Saint-Amand
*	Trustee	May 6, 2013
Stephen E. O’Neil
*	Trustee	May 6, 2013
David Rosenberg
*By:  /s/ Hal Liebes
Hal Liebes
Attorney-In-Fact

C-5

EXHIBIT INDEX

Index No.	Description of Exhibit
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 Labels Linkbase
EX-101.PRE	XBRL Taxonomy Extension Presentation Linkbase