485BPOS

As filed with the U.S. Securities and Exchange Commission on November 5, 2012

Securities Act File No. 002-98229

Investment Company Act File No. 811-04316

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. ____	[     ]
	Post-Effective Amendment No. 53	[ X ]
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940			[ X ]
	Amendment No. 53	[ X ]
(Check appropriate box or boxes.)

MIDAS SERIES TRUST

(Exact name of Registrant as Specified in Charter)

11 Hanover Square, New York, New York     10005

(Address of Principal Executive Office) (Zip Code)

Registrant’s Telephone Number, including Area Code: 1-212-480-6432

John F. Ramírez, Esq.

11 Hanover Square, New York, NY 10005

 (Name and Address of Agent for Service)

Continuous

(Approximate Date of Proposed Offering)

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

[ X ]	immediately upon filing pursuant to paragraph (b)
[     ]	on (date) pursuant to paragraph (b)
[     ]	60 days after filing pursuant to paragraph (a)(1)
[     ]	on (date) 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 box:

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

This amendment is being filed solely to submit exhibits containing risk/return summary information in interactive data format that is identical to the risk/return information contained in the Registrant’s prospectus that was filed with the Securities and Exchange Commission in Post-Effective Amendment No. 52 to the Registrant’s registration statement on October 11, 2012.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, as amended (the “1933 Act”), 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 1933 Act and has duly caused this Post-Effective Amendment No. 53 to its Registration Statement on Form N-1A to be signed on its behalf by the undersigned, thereunto duly authorized, in the City and State of New York on the 5th day of November, 2012.

MIDAS SERIES TRUST

By:   /s/ Thomas B. Winmill

Thomas B. Winmill, President,

Pursuant to the requirements of the 1933 Act, this Post-Effective Amendment No. 53 has been signed below by the following persons in the capacities indicated on November 5, 2012.

Signature	Title	Date
/s/ Thomas B. Winmill	Chairman, Trustee, President and Chief Executive Officer	November 5, 2012
Thomas B. Winmill
/s/ Thomas O’Malley	Treasurer, Chief Accounting Officer, Chief Financial Officer	November 5, 2012
Thomas O’Malley
/s/ Bruce B. Huber*	Trustee	November 5, 2012
Bruce B. Huber
/s/ James E. Hunt*	Trustee	November 5, 2012
James E. Hunt
/s/ Peter K. Werner*	Trustee	November 5, 2012
Peter K. Werner

*           Signed by John F. Ramírez, Attorney-in-Fact, pursuant to Power of Attorney filed herewith.

Exhibit Index

Type	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 Labels Linkbase

EX-101.PRE   XBRL Taxonomy Extension Presentation Linkbase

EX-99

POWER OF ATTORNEY

MIDAS SERIES TRUST, a Delaware statutory trust (“Trust”) and each of its undersigned trustees, hereby nominates, constitutes and appoints Thomas B. Winmill, John F. Ramirez, and Jacob Bukhsbaum (with full power to each of them to act alone) its/his true and lawful attorney-in-fact and agent, for it/him and on its/his behalf and in its/his name, place and stead in any and all capacities, to execute for and on behalf of the undersigned, in the undersigned’s capacity as a trustee of the Trust, the Trust’s Registration Statement on Form N-1A under the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, and any and all amendments to such Registration Statement, and any and all supplements thereto and any exhibits and other documents requisite in connection therewith (the “Documents”); do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Documents and file same with the United States Securities and Exchange Commission and any other regulatory authority having jurisdiction over the offer and sale of shares of beneficial interest of the Trust; and take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the Documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact’s discretion. The undersigned hereby grants unto said attorneys-in-fact, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises as fully to all intents and purposes as the Trust and the undersigned trustee itself/himself might or could do.

IN WITNESS WHEREOF, I have hereunto signed my name this 11th of October, 2012.

MIDAS SERIES TRUST

By: /s/ Bruce B. Huber

Name: Bruce B. Huber

Title: Trustee

By: /s/ James E. Hunt

Name: James E. Hunt

Title: Trustee

By: /s/ Peter K. Werner

Name: Peter K. Werner

Title: Trustee