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    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000899148</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000003774</seriesId>
        <classId>C000010463</classId>
        <classId>C000010464</classId>
        <classId>C000010465</classId>
      </seriesClassInfo>

    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>Rydex Series Funds</regName>
      <regFileNumber>811-07584</regFileNumber>
      <regCik>0000899148</regCik>
      <regLei>5493004D62WV1EDNTU07</regLei>
      <regStreet1>702 King Farm Blvd., Suite 200</regStreet1>
      <regCity>Rockville</regCity>
      <regStateConditional regCountry="US" regState="US-MD"/>
      <regZipOrPostalCode>20850</regZipOrPostalCode>
      <regPhone>301-296-5100</regPhone>
      <seriesName>Commodities Strategy Fund</seriesName>
      <seriesId>S000003774</seriesId>
      <seriesLei>549300Y83L5ISW76HS10</seriesLei>
      <repPdEnd>2024-12-31</repPdEnd>
      <repPdDate>2024-09-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>3638893.07</totAssets>
      <totLiabs>8403.73</totLiabs>
      <netAssets>3630489.34</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>633063.63000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
      <amtPayOneYrOther>0.00000000</amtPayOneYrOther>
      <amtPayAftOneYrBanksBorr>0.00000000</amtPayAftOneYrBanksBorr>
      <amtPayAftOneYrCtrldComp>0.00000000</amtPayAftOneYrCtrldComp>
      <amtPayAftOneYrOthAffil>0.00000000</amtPayAftOneYrOthAffil>
      <amtPayAftOneYrOther>0.00000000</amtPayAftOneYrOther>
      <delayDeliv>0.00000000</delayDeliv>
      <standByCommit>0.00000000</standByCommit>
      <liquidPref>0.00000000</liquidPref>
      <cshNotRptdInCorD>0.65000000</cshNotRptdInCorD>
      <curMetrics>
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      </curMetrics>
      <creditSprdRiskInvstGrade period10Yr="0.00000000" period1Yr="163.53042671" period30Yr="0.00000000" period3Mon="0.00000000" period5Yr="11.41754145"/>
      <creditSprdRiskNonInvstGrade period10Yr="0.00000000" period1Yr="0.00000000" period30Yr="0.00000000" period3Mon="0.00000000" period5Yr="0.00000000"/>
      <isNonCashCollateral>N</isNonCashCollateral>
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        <monthlyTotReturns>
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        <monthlyReturnCats>
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            <mon3 netRealizedGain="-186431.71000000" netUnrealizedAppr="138731.12000000"/>
            <futureCategory>
              <instrMon1 netRealizedGain="-69938.48000000" netUnrealizedAppr="-181269.82000000"/>
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            <futureCategory>
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            </futureCategory>
          </equityContracts>
        </monthlyReturnCats>
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        <othMon2 netRealizedGain="0.00000000" netUnrealizedAppr="2888.06000000"/>
        <othMon3 netRealizedGain="-660.38000000" netUnrealizedAppr="4177.78000000"/>
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      <mon2Flow redemption="967522.62000000" reinvestment="0.00000000" sales="544165.88000000"/>
      <mon3Flow redemption="1091214.14000000" reinvestment="0.00000000" sales="316394.57000000"/>


      <varInfo>

        <fundsDesignatedInfo>
          <nameDesignatedIndex>S&amp;P GSCI Commodity Index</nameDesignatedIndex>
          <indexIdentifier>SPGSCIINX</indexIdentifier>

        </fundsDesignatedInfo>

      </varInfo>
    </fundInfo>
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        <name>Guggenheim Partners Investment Management LLC</name>
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        <units>NS</units>
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        <valUSD>797006.16000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>TREASURY BILL</name>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
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          <couponKind>None</couponKind>
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          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
      <invstOrSec>
        <name>Guggenheim Partners Investment Management LLC</name>
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        <title>Guggenheim Ultra Short Duration Fund - Institutional Class</title>
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        <identifiers>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
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      <invstOrSec>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <repurchaseAgrmt>
          <transCat>Repurchase</transCat>
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      </invstOrSec>
      <invstOrSec>
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        <cusip>N/A</cusip>
        <identifiers>
          <ticker value="GIV4"/>
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        <balance>27.00000000</balance>
        <units>NC</units>
        <curCd>USD</curCd>
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        <payoffProfile>N/A</payoffProfile>
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        <fairValLevel>1</fairValLevel>
        <derivativeInfo>
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            <counterparties>
              <counterpartyName>Goldman Sachs &amp; Co. LLC</counterpartyName>
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            <payOffProf>Long</payOffProf>
            <descRefInstrmnt>
              <indexBasketInfo>
                <indexName>S&amp;P GSCI Index Spot CME</indexName>
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            <expDate>2024-10-15</expDate>
            <notionalAmt>3458779.59000000</notionalAmt>
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      </invstOrSec>
      <invstOrSec>
        <name>BOFA SECURITIES, INC.</name>
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        <invCountry>US</invCountry>
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        <fairValLevel>2</fairValLevel>
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              <invstCat>UST</invstCat>
            </repurchaseCollateral>
          </repurchaseCollaterals>
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        <securityLending>
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          <isLoanByFund>N</isLoanByFund>
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      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2024-10-30</ncom:dateSigned>
      <ncom:nameOfApplicant>Rydex Series Funds</ncom:nameOfApplicant>
      <ncom:signature>James Howley</ncom:signature>
      <ncom:signerName>James Howley</ncom:signerName>
      <ncom:title>CFO</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
