As filed with the U.S. Securities and Exchange Commission on May 6, 2020 

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. 70	[ X ]
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940		[ X ]
	Amendment No. 70	[ 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: 1-212-785-0900 

Russell Kamerman, 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) of Rule 485
[     ]	on (date) pursuant to paragraph (b) of Rule 485
[     ]	60 days after filing pursuant to paragraph (a)(1) of Rule 485
[     ]	on (date) pursuant to paragraph (a)(1) of Rule 485
[     ]	75 days after filing pursuant to paragraph (a)(2) of Rule 485
[     ]	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 in interactive data format exhibits containing risk/return summary information that is identical to the risk/return summary information contained in the Registrant’s prospectus for Midas Series Trust, which was filed with the Securities and Exchange Commission in Post-Effective Amendment No. 69 to the Registrant’s registration statement on April 29, 2020. 

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. 70 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 6^th day of May, 2020. 

MIDAS SERIES TRUST
By:	/s/ Thomas B. Winmill
Name:	Thomas B. Winmill
Title:	Trustee, President, Chief Executive Officer, Chairman, and Chief Legal Officer

Pursuant to the requirements of the 1933 Act, Post-Effective Amendment No. 70 has been signed below by the following persons in the capacities and on the dates indicated. 

Signature	Title	Date
/s/ Thomas B. Winmill  Thomas B. Winmill	Trustee, President, Chief Executive Officer, Chairman, and Chief Legal Officer	May 6, 2020
/s/ Thomas O’Malley  Thomas O’Malley	Vice President, Treasurer, Chief Accounting Officer, and Chief Financial Officer	May 6, 2020
/s/ Jon Tomasson*	Trustee	May 6, 2020
Jon Tomasson
/s/ Peter K. Werner*	Trustee	May 6, 2020
Peter K. Werner

* Signed by Russell Kamerman, Attorney-in-fact, pursuant to Powers of Attorney filed as an exhibit to Post-Effective Amendment No. 65 to Registrant’s Registration Statement on Form N-1A, File Nos. 002-98229 and 811-04316, filed on April 27, 2018. 

MIDAS SERIES TRUST 

EXHIBIT INDEX 

Exhibit	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