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          <ccc>XXXXXXXX</ccc>
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      <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>
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      <repPdEnd>2020-03-31</repPdEnd>
      <repPdDate>2019-12-31</repPdDate>
      <isFinalFiling>N</isFinalFiling>
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      <totLiabs>144648.39</totLiabs>
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      <assetsInvested>0</assetsInvested>
      <amtPayOneYrBanksBorr>0</amtPayOneYrBanksBorr>
      <amtPayOneYrCtrldComp>0</amtPayOneYrCtrldComp>
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        <fairValLevel>2</fairValLevel>
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        <fairValLevel>2</fairValLevel>
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            <counterpartyInfos>
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            </counterpartyInfos>
          </notClearedCentCparty>
          <isTriParty>Y</isTriParty>
          <repurchaseRt>1.53000000</repurchaseRt>
          <maturityDt>2020-01-02</maturityDt>
          <repurchaseCollaterals>
            <repurchaseCollateral>
              <principalAmt>2614617.53000000</principalAmt>
              <principalCd>USD</principalCd>
              <collateralVal>2885300.98000000</collateralVal>
              <collateralCd>USD</collateralCd>
              <invstCat>UST</invstCat>
            </repurchaseCollateral>
          </repurchaseCollaterals>
        </repurchaseAgrmt>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>GTXI_C</name>
        <lei>N/A</lei>
        <title>GTX, Inc.</title>
        <cusip>N/A</cusip>
        <identifiers>
          <other otherDesc="Internal ID" value="GTXI_CVR"/>
        </identifiers>
        <balance>7.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>0.00000000</valUSD>
        <pctVal>0.000000</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetConditional assetCat="OTHER" desc="Rights"/>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>3</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Barclays Bank plc</name>
        <lei>G5GSEF7VJP5I7OUK5573</lei>
        <title>Russell 2000 Index</title>
        <cusip>N/A</cusip>
        <identifiers>
          <other otherDesc="Internal ID" value="BRSWAP"/>
        </identifiers>
        <balance>14951.94220000</balance>
        <units>NC</units>
        <curCd>USD</curCd>
        <valUSD>64575.70000000</valUSD>
        <pctVal>0.179131190184</pctVal>
        <payoffProfile>N/A</payoffProfile>
        <assetCat>DE</assetCat>
        <issuerConditional desc="Derivative" issuerCat="OTHER"/>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <derivativeInfo>
          <swapDeriv derivCat="SWP">
            <counterparties>
              <counterpartyName>BARCLAYS BANK PLC</counterpartyName>
              <counterpartyLei>G5GSEF7VJP5I7OUK5573</counterpartyLei>
            </counterparties>
            <descRefInstrmnt>
              <indexBasketInfo>
                <indexName>Russell 2000 Index</indexName>
                <indexIdentifier>RTY</indexIdentifier>
              </indexBasketInfo>
            </descRefInstrmnt>
            <swapFlag>Y</swapFlag>
            <otherRecDesc fixedOrFloating="Other">Russell 2000 Index-Tenor Monthly</otherRecDesc>
            <floatingPmntDesc curCd="USD" fixedOrFloating="Floating" floatingRtIndex="US0001W" floatingRtSpread="0" pmntAmt="0">
              <rtResetTenors>
                <rtResetTenor rateTenor="Month" rateTenorUnit="1" resetDt="Day" resetDtUnit="7"/>
              </rtResetTenors>
            </floatingPmntDesc>
            <terminationDt>2020-01-31</terminationDt>
            <upfrontPmnt>0</upfrontPmnt>
            <pmntCurCd>USD</pmntCurCd>
            <upfrontRcpt>0</upfrontRcpt>
            <rcptCurCd>USD</rcptCurCd>
            <notionalAmt>24946852.05</notionalAmt>
            <curCd>USD</curCd>
            <unrealizedAppr>64575.7</unrealizedAppr>
          </swapDeriv>
        </derivativeInfo>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>BNP Paribas</name>
        <lei>R0MUWSFPU8MPRO8K5P83</lei>
        <title>Russell 2000 Index</title>
        <cusip>N/A</cusip>
        <identifiers>
          <other otherDesc="Internal ID" value="BNPSWAP"/>
        </identifiers>
        <balance>1295.27320000</balance>
        <units>NC</units>
        <curCd>USD</curCd>
        <valUSD>-11918.86000000</valUSD>
        <pctVal>-0.03306258511</pctVal>
        <payoffProfile>N/A</payoffProfile>
        <assetCat>DE</assetCat>
        <issuerConditional desc="Derivative" issuerCat="OTHER"/>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <derivativeInfo>
          <swapDeriv derivCat="SWP">
            <counterparties>
              <counterpartyName>BNP Paribas</counterpartyName>
              <counterpartyLei>R0MUWSFPU8MPRO8K5P83</counterpartyLei>
            </counterparties>
            <descRefInstrmnt>
              <indexBasketInfo>
                <indexName>Russell 2000 Index</indexName>
                <indexIdentifier>RTY</indexIdentifier>
              </indexBasketInfo>
            </descRefInstrmnt>
            <swapFlag>Y</swapFlag>
            <otherRecDesc fixedOrFloating="Other">Russell 2000 Index-Tenor Monthly</otherRecDesc>
            <floatingPmntDesc curCd="USD" fixedOrFloating="Floating" floatingRtIndex="US0001M" floatingRtSpread="0.1" pmntAmt="0">
              <rtResetTenors>
                <rtResetTenor rateTenor="Month" rateTenorUnit="1" resetDt="Month" resetDtUnit="1"/>
              </rtResetTenors>
            </floatingPmntDesc>
            <terminationDt>2020-01-28</terminationDt>
            <upfrontPmnt>0</upfrontPmnt>
            <pmntCurCd>USD</pmntCurCd>
            <upfrontRcpt>0</upfrontRcpt>
            <rcptCurCd>USD</rcptCurCd>
            <notionalAmt>2161123.18</notionalAmt>
            <curCd>USD</curCd>
            <unrealizedAppr>-11918.86</unrealizedAppr>
          </swapDeriv>
        </derivativeInfo>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Nexstar Media Group Inc</name>
        <lei>N/A</lei>
        <title>Nexstar Media Group, Inc.</title>
        <cusip>N/A</cusip>
        <identifiers>
          <ticker value="NXST CVR"/>
        </identifiers>
        <balance>2530.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>0.00000000</valUSD>
        <pctVal>0.000000</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetConditional assetCat="OTHER" desc="Rights"/>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>3</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>FED HOME LN DISCOUNT NT</name>
        <lei>N/A</lei>
        <title>Federal Home Loan Bank</title>
        <cusip>313384SD2</cusip>
        <identifiers>
          <isin value="US313384SD24"/>
        </identifiers>
        <balance>2975000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>2972145.65000000</valUSD>
        <pctVal>8.244649112396</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGSE</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2020-01-23</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>Tobira Therapeutics Inc</name>
        <lei>N/A</lei>
        <title>Tobira Therapeutics, Inc.</title>
        <cusip>N/A</cusip>
        <identifiers>
          <ticker value="TBRA CVR"/>
        </identifiers>
        <balance>141.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>0.00000000</valUSD>
        <pctVal>0.000000</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetConditional assetCat="OTHER" desc="Rights"/>
        <issuerCat>CORP</issuerCat>
        <invCountry>IE</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>3</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>FED HOME LN DISCOUNT NT</name>
        <lei>N/A</lei>
        <title>Federal Home Loan Bank</title>
        <cusip>313384RG6</cusip>
        <identifiers>
          <isin value="US313384RG63"/>
        </identifiers>
        <balance>3500000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>3499888.20000000</valUSD>
        <pctVal>9.708592222462</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGSE</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2020-01-02</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>FEDERAL FARM CREDIT BANK</name>
        <lei>N/A</lei>
        <title>Federal Farm Credit Bank</title>
        <cusip>3133EKGP5</cusip>
        <identifiers>
          <isin value="US3133EKGP58"/>
        </identifiers>
        <balance>4300000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>4299017.06000000</valUSD>
        <pctVal>11.92535338498</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGSE</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2022-04-11</maturityDt>
          <couponKind>Floating</couponKind>
          <annualizedRt>1.81600000</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>FREDDIE MAC</name>
        <lei>S6XOOCT0IEG5ABCC6L87</lei>
        <title>Freddie Mac.</title>
        <cusip>3134GTSF1</cusip>
        <identifiers>
          <isin value="US3134GTSF13"/>
        </identifiers>
        <balance>4000000.00000000</balance>
        <units>PA</units>
        <curCd>USD</curCd>
        <valUSD>4012110.80000000</valUSD>
        <pctVal>11.12948342422</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>DBT</assetCat>
        <issuerCat>USGSE</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <debtSec>
          <maturityDt>2022-06-10</maturityDt>
          <couponKind>Fixed</couponKind>
          <annualizedRt>2.40000000</annualizedRt>
          <isDefault>N</isDefault>
          <areIntrstPmntsInArrs>N</areIntrstPmntsInArrs>
          <isPaidKind>N</isPaidKind>
        </debtSec>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2020-01-30</ncom:dateSigned>
      <ncom:nameOfApplicant>Rydex Series Funds</ncom:nameOfApplicant>
      <ncom:signature>John Sullivan</ncom:signature>
      <ncom:signerName>John Sullivan</ncom:signerName>
      <ncom:title>CFO</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
