<?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>
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      <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>2026-03-31</repPdEnd>
      <repPdDate>2025-06-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
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      <totLiabs>10210.93</totLiabs>
      <netAssets>523262.79</netAssets>
      <assetsAttrMiscSec>0.00000000</assetsAttrMiscSec>
      <assetsInvested>0.00000000</assetsInvested>
      <amtPayOneYrBanksBorr>0.00000000</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0.00000000</amtPayOneYrCtrldComp>
      <amtPayOneYrOthAffil>0.00000000</amtPayOneYrOthAffil>
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      <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>
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      <isNonCashCollateral>N</isNonCashCollateral>
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            <mon3 netRealizedGain="4664.97000000" netUnrealizedAppr="3252.36000000"/>
            <swapCategory>
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          <interestRtContracts>
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            <futureCategory>
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          <indexIdentifier>MLIGOVUSD</indexIdentifier>

        </fundsDesignatedInfo>

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        <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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        <securityLending>
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      </invstOrSec>
      <invstOrSec>
        <name>Barclays Bank plc</name>
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        <units>OU</units>
        <descOthUnits>Notional Amount</descOthUnits>
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        <payoffProfile>N/A</payoffProfile>
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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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        <securityLending>
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      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2025-07-30</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>
