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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Nv+NQLh+Vq/5glpFxNky006YwpbfJxz0ZsLIgXvSi4F0H9NxcVMMmMzr60AI1+Zm
 eZyb3j1aA0lqtN9Z7BXROA==

<SEC-DOCUMENT>9999999995-10-000813.txt : 20100325
<SEC-HEADER>9999999995-10-000813.hdr.sgml : 20100325
<ACCEPTANCE-DATETIME>20100325001515
ACCESSION NUMBER:		9999999995-10-000813
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20100324
DATE AS OF CHANGE:		20100325
EFFECTIVENESS DATE:		20100324

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RYDEX SERIES FUNDS
		CENTRAL INDEX KEY:			0000899148
		IRS NUMBER:				521820225
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-59692
		FILM NUMBER:		10703182

	BUSINESS ADDRESS:	
		STREET 1:		9601 BLACKWELL ROAD
		STREET 2:		SUITE 500
		CITY:			ROCKVILLE
		STATE:			MD
		ZIP:			20850
		BUSINESS PHONE:		301-296-5100

	MAIL ADDRESS:	
		STREET 1:		9601 BLACKWELL ROAD
		STREET 2:		SUITE 500
		CITY:			ROCKVILLE
		STATE:			MD
		ZIP:			20850

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RYDEX SERIES TRUST
		DATE OF NAME CHANGE:	19930714
<SERIES-AND-CLASSES-CONTRACTS-DATA>
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<SERIES>
<OWNER-CIK>0000899148
<SERIES-ID>S000014094
<SERIES-NAME>Managed Futures Strategy Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000087659
<CLASS-CONTRACT-NAME>Y-Class Shares
</CLASS-CONTRACT>
</SERIES>
<SERIES>
<OWNER-CIK>0000899148
<SERIES-ID>S000025112
<SERIES-NAME>Long/Short Commodities Strategy Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000087660
<CLASS-CONTRACT-NAME>Y-Class Shares
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2010-03-24</finalEffectivenessDispDate>
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            <entityName>RYDEX SERIES FUNDS</entityName>
            <fileNumber>033-59692</fileNumber>
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                    <seriesId>S000014094</seriesId>
                    <seriesName>Managed Futures Strategy Fund</seriesName>
                    <classContractId>C000087659</classContractId>
                    <classContractName>Y-Class Shares</classContractName>
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                <existing>
                    <seriesId>S000025112</seriesId>
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