<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/nport" xmlns:com="http://www.sec.gov/edgar/common" xmlns:ncom="http://www.sec.gov/edgar/nportcommon" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sec.gov/edgar/nport eis_NPORT_Filer.xsd">
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    <isConfidential>false</isConfidential>
    <filerInfo>

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


      <seriesClassInfo>
        <seriesId>S000041673</seriesId>
        <classId>C000129378</classId>
        <classId>C000129379</classId>
        <classId>C000129380</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>Emerging Markets Bond Strategy Fund</seriesName>
      <seriesId>S000041673</seriesId>
      <seriesLei>5493007HTK1ZMPR37V06</seriesLei>
      <repPdEnd>2025-03-31</repPdEnd>
      <repPdDate>2025-03-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
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      <totLiabs>9515.17</totLiabs>
      <netAssets>388985.44</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</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>34789.13000000</cshNotRptdInCorD>
      <curMetrics>
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      <isNonCashCollateral>N</isNonCashCollateral>
      <returnInfo>
        <monthlyTotReturns>
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            <mon3 netRealizedGain="-1795.68000000" netUnrealizedAppr="-3305.43000000"/>
            <swapCategory>
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              <instrMon3 netRealizedGain="-1795.68000000" netUnrealizedAppr="-3305.43000000"/>
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          <interestRtContracts>
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            <mon2 netRealizedGain="1881.55000000" netUnrealizedAppr="1078.54000000"/>
            <mon3 netRealizedGain="199.74000000" netUnrealizedAppr="515.63000000"/>
            <futureCategory>
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          </interestRtContracts>
        </monthlyReturnCats>
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        <othMon2 netRealizedGain="0.00000000" netUnrealizedAppr="-0.45000000"/>
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      <mon3Flow redemption="157412.00000000" reinvestment="0.00000000" sales="188113.87000000"/>


      <varInfo>

        <fundsDesignatedInfo>
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          <indexIdentifier>MLIGOVUSD</indexIdentifier>

        </fundsDesignatedInfo>

      </varInfo>
    </fundInfo>
    <invstOrSecs>
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        <curCd>USD</curCd>
        <valUSD>2997.52000000</valUSD>
        <pctVal>0.770599537093</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>UST</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2025-04-08</maturityDt>
          <couponKind>None</couponKind>
          <annualizedRt>0.00000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Barclays Bank plc</name>
        <lei>G5GSEF7VJP5I7OUK5573</lei>
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        <identifiers>
          <other otherDesc="Internal ID" value="CDXEM43609071"/>
        </identifiers>
        <balance>-220000.00000000</balance>
        <units>OU</units>
        <descOthUnits>Notional Amount</descOthUnits>
        <curCd>USD</curCd>
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        <pctVal>-2.15483643809</pctVal>
        <payoffProfile>N/A</payoffProfile>
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        <fairValLevel>2</fairValLevel>
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              <counterpartyName>BARCLAYS BANK PLC</counterpartyName>
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            <counterparties>
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            <swapFlag>Y</swapFlag>
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            <otherPmntDesc fixedOrFloating="Other">CDXEM43 V1 1% 06/20/2030 - Tenor Quarterly</otherPmntDesc>
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        <securityLending>
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      <invstOrSec>
        <name>Chicago Board of Trade</name>
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            <payOffProf>Long</payOffProf>
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                <issuerName>N/A</issuerName>
                <issueTitle>US 5yr 6%</issueTitle>
                <identifiers>
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                  <other otherDesc="Interest Rate Future" value="US 5yr 6%"/>
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              </otherRefInst>
            </descRefInstrmnt>
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            <swapFlag>Y</swapFlag>
            <otherRecDesc fixedOrFloating="Other">Invesco Emerging Markets Sovereign Debt ETF-Tenor Monthly</otherRecDesc>
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              <rtResetTenors>
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      <invstOrSec>
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        <title>BofA Securities, Inc.</title>
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      <invstOrSec>
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        <securityLending>
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      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2025-04-30</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>
</edgarSubmission>
