<?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">
  <headerData>
    <submissionType>NPORT-P</submissionType>
    <isConfidential>false</isConfidential>
    <filerInfo>

      <filer>
        <issuerCredentials>
          <cik>0000732697</cik>
          <ccc>XXXXXXXX</ccc>
        </issuerCredentials>
      </filer>


      <seriesClassInfo>
        <seriesId>S000019983</seriesId>
        <classId>C000074788</classId>
        <classId>C000056041</classId>
      </seriesClassInfo>


    </filerInfo>
  </headerData>
  <formData>
    <genInfo>
      <regName>ULTRA SERIES FUND</regName>
      <regFileNumber>811-04815</regFileNumber>
      <regCik>0000732697</regCik>
      <regLei>254900JPNAJ16VJV5X45</regLei>
      <regStreet1>550 SCIENCE DRIVE</regStreet1>
      <regCity>MADISON</regCity>
      <regStateConditional regCountry="US" regState="US-WI"/>
      <regZipOrPostalCode>53711</regZipOrPostalCode>
      <regPhone>608-274-0300</regPhone>
      <seriesName>Mid Cap Fund</seriesName>
      <seriesId>S000019983</seriesId>
      <seriesLei>2549003E389BDUF7PS08</seriesLei>
      <repPdEnd>2024-12-31</repPdEnd>
      <repPdDate>2024-09-30</repPdDate>
      <isFinalFiling>N</isFinalFiling>
    </genInfo>
    <fundInfo>
      <totAssets>155031509.49</totAssets>
      <totLiabs>3203421.02</totLiabs>
      <netAssets>151828088.47</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>0.00000000</cshNotRptdInCorD>
      <borrowers>
        <borrower aggrVal="2986079.76000000" lei="KB1H1DSPRFMYMCUFXT09" name="Wells Fargo Bank, National Association"/>
        <borrower aggrVal="129949.44000000" lei="BFM8T61CT2L1QCEMIK50" name="UBS AG"/>
      </borrowers>
      <aggregateCondition isNonCashCollateral="Y">
        <aggregateInfos>
          <aggregateInfo amt="141453.97000000" collatrl="132904.52000000">
            <invstCat>UST</invstCat>
          </aggregateInfo>
        </aggregateInfos>
      </aggregateCondition>
      <returnInfo>
        <monthlyTotReturns>
          <monthlyTotReturn classId="C000074788" rtn1="4.09000000" rtn2="1.83000000" rtn3="1.06000000"/>
          <monthlyTotReturn classId="C000056041" rtn1="4.11000000" rtn2="1.86000000" rtn3="1.08000000"/>
        </monthlyTotReturns>
        <othMon1 netRealizedGain="3111585.74000000" netUnrealizedAppr="2913625.91000000"/>
        <othMon2 netRealizedGain="0.00000000" netUnrealizedAppr="2620464.97000000"/>
        <othMon3 netRealizedGain="4213182.30000000" netUnrealizedAppr="-2605075.07000000"/>
      </returnInfo>
      <mon1Flow redemption="2114067.96000000" reinvestment="0.00000000" sales="86007.48000000"/>
      <mon2Flow redemption="2517987.09000000" reinvestment="0.00000000" sales="165563.87000000"/>
      <mon3Flow redemption="1308029.38000000" reinvestment="0.00000000" sales="138910.29000000"/>


    </fundInfo>
    <invstOrSecs>
      <invstOrSec>
        <name>Teledyne Technologies Inc</name>
        <lei>549300VSMO9KYQWDND94</lei>
        <title>Teledyne Technologies, Inc.</title>
        <cusip>879360105</cusip>
        <identifiers>
          <isin value="US8793601050"/>
        </identifiers>
        <balance>7877.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3447447.82000000</valUSD>
        <pctVal>2.270625847127</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Expeditors International of Washington Inc</name>
        <lei>984500B055A804AB6E40</lei>
        <title>Expeditors International of Washington, Inc.</title>
        <cusip>302130109</cusip>
        <identifiers>
          <isin value="US3021301094"/>
        </identifiers>
        <balance>18888.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2481883.20000000</valUSD>
        <pctVal>1.634666697717</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Liberty Broadband Corp</name>
        <lei>549300MIX43II8JLN536</lei>
        <title>Liberty Broadband Corp.</title>
        <cusip>530307305</cusip>
        <identifiers>
          <isin value="US5303073051"/>
        </identifiers>
        <balance>48060.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3714557.40000000</valUSD>
        <pctVal>2.446554809081</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Amphenol Corp</name>
        <lei>549300D3L3G0R4U4VT04</lei>
        <title>Amphenol Corp.</title>
        <cusip>032095101</cusip>
        <identifiers>
          <isin value="US0320951017"/>
        </identifiers>
        <balance>85881.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>5596005.96000000</valUSD>
        <pctVal>3.685751441905</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Brookfield Asset Management Ltd</name>
        <lei>549300CZ84WPNJZKY093</lei>
        <title>Brookfield Asset Management Ltd.</title>
        <cusip>113004105</cusip>
        <identifiers>
          <isin value="CA1130041058"/>
        </identifiers>
        <balance>67241.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3179826.89000000</valUSD>
        <pctVal>2.094360089785</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>CA</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <loanByFundCondition isLoanByFund="Y" loanVal="3116029.20000000"/>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Brown-Forman Corp</name>
        <lei>549300873K3LXF7ARU34</lei>
        <title>Brown-Forman Corp.</title>
        <cusip>115637209</cusip>
        <identifiers>
          <isin value="US1156372096"/>
        </identifiers>
        <balance>67427.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3317408.40000000</valUSD>
        <pctVal>2.184976728239</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Arch Capital Group Ltd</name>
        <lei>549300AYR4P8AFKDCE43</lei>
        <title>Arch Capital Group Ltd.</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="BMG0450A1053"/>
        </identifiers>
        <balance>119809.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>13404230.92000000</valUSD>
        <pctVal>8.828558045534</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>BM</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>State Street Global Advisors</name>
        <lei>5493008BJIBKQ5KTIF74</lei>
        <title>State Street Navigator Securities Lending Government Money Market Portfolio</title>
        <cusip>857509301</cusip>
        <identifiers>
          <isin value="US8575093013"/>
        </identifiers>
        <balance>3046698.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3046698.00000000</valUSD>
        <pctVal>2.006676123438</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <cashCollateralCondition cashCollateralVal="3046698.00000000" isCashCollateral="Y"/>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Lithia Motors Inc</name>
        <lei>SE8N1EZEHPZQBCBVKD53</lei>
        <title>Lithia Motors, Inc.</title>
        <cusip>536797103</cusip>
        <identifiers>
          <isin value="US5367971034"/>
        </identifiers>
        <balance>10266.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3260892.24000000</valUSD>
        <pctVal>2.147752944043</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Microchip Technology Inc</name>
        <lei>5493007PTFULNYZJ1R12</lei>
        <title>Microchip Technology, Inc.</title>
        <cusip>595017104</cusip>
        <identifiers>
          <isin value="US5950171042"/>
        </identifiers>
        <balance>28045.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2251733.05000000</valUSD>
        <pctVal>1.483080682033</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Asbury Automotive Group Inc</name>
        <lei>549300JH4DTA7U42GL91</lei>
        <title>Asbury Automotive Group, Inc.</title>
        <cusip>043436104</cusip>
        <identifiers>
          <isin value="US0434361046"/>
        </identifiers>
        <balance>13599.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3244585.41000000</valUSD>
        <pctVal>2.137012619138</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Armstrong World Industries Inc</name>
        <lei>KXMRXXOJ88Q45Y45MG74</lei>
        <title>Armstrong World Industries, Inc.</title>
        <cusip>04247X102</cusip>
        <identifiers>
          <isin value="US04247X1028"/>
        </identifiers>
        <balance>20286.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2666188.98000000</valUSD>
        <pctVal>1.756057793302</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>CDW Corp/DE</name>
        <lei>9845001B052ABF0B6755</lei>
        <title>CDW Corp.</title>
        <cusip>12514G108</cusip>
        <identifiers>
          <isin value="US12514G1085"/>
        </identifiers>
        <balance>20651.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4673321.30000000</valUSD>
        <pctVal>3.078034734609</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Dollar Tree Inc</name>
        <lei>549300PMSTQITB1WHR43</lei>
        <title>Dollar Tree, Inc.</title>
        <cusip>256746108</cusip>
        <identifiers>
          <isin value="US2567461080"/>
        </identifiers>
        <balance>57407.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4036860.24000000</valUSD>
        <pctVal>2.658836240830</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>W R Berkley Corp</name>
        <lei>SQOAGCLKBDWNVYV1OV80</lei>
        <title>W.R. Berkley Corp.</title>
        <cusip>084423102</cusip>
        <identifiers>
          <isin value="US0844231029"/>
        </identifiers>
        <balance>64040.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3632989.20000000</valUSD>
        <pctVal>2.392830757872</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Gartner Inc</name>
        <lei>PP55B5R38BFB8O8HH686</lei>
        <title>Gartner, Inc.</title>
        <cusip>366651107</cusip>
        <identifiers>
          <isin value="US3666511072"/>
        </identifiers>
        <balance>19420.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>9841279.20000000</valUSD>
        <pctVal>6.481856749414</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>PACCAR Inc</name>
        <lei>KDTEY8BWE486IKZ3CC07</lei>
        <title>PACCAR, Inc.</title>
        <cusip>693718108</cusip>
        <identifiers>
          <isin value="US6937181088"/>
        </identifiers>
        <balance>57914.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>5714953.52000000</valUSD>
        <pctVal>3.764095021936</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Carlisle Cos Inc</name>
        <lei>XR64VGX1ZPX6G7ZN7Z11</lei>
        <title>Carlisle Cos., Inc.</title>
        <cusip>142339100</cusip>
        <identifiers>
          <isin value="US1423391002"/>
        </identifiers>
        <balance>14956.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6726461.00000000</valUSD>
        <pctVal>4.430313960864</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>State Street Global Advisors</name>
        <lei>549300BZ5TGIFZUZDZ37</lei>
        <title>State Street Institutional US Government Money Market Fund</title>
        <cusip>857492706</cusip>
        <identifiers>
          <isin value="US8574927062"/>
        </identifiers>
        <balance>7620623.49000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7620623.49000000</valUSD>
        <pctVal>5.019244835915</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>STIV</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Labcorp Holdings Inc</name>
        <lei>N/A</lei>
        <title>Labcorp Holdings, Inc.</title>
        <cusip>504922105</cusip>
        <identifiers>
          <isin value="US5049221055"/>
        </identifiers>
        <balance>19452.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4347132.96000000</valUSD>
        <pctVal>2.863194158476</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Arista Networks Inc</name>
        <lei>635400H1WKBLOQERUU95</lei>
        <title>Arista Networks, Inc.</title>
        <cusip>040413106</cusip>
        <identifiers>
          <isin value="US0404131064"/>
        </identifiers>
        <balance>11488.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4409324.16000000</valUSD>
        <pctVal>2.904155749066</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Ross Stores Inc</name>
        <lei>549300ENZFLPGRDFZQ60</lei>
        <title>Ross Stores, Inc.</title>
        <cusip>778296103</cusip>
        <identifiers>
          <isin value="US7782961038"/>
        </identifiers>
        <balance>56177.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>8455200.27000000</valUSD>
        <pctVal>5.568930199414</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>CarMax Inc</name>
        <lei>N/A</lei>
        <title>CarMax, Inc.</title>
        <cusip>143130102</cusip>
        <identifiers>
          <isin value="US1431301027"/>
        </identifiers>
        <balance>30923.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>2392821.74000000</valUSD>
        <pctVal>1.576007288317</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Cullen/Frost Bankers Inc</name>
        <lei>529900V2E9G9AY665O34</lei>
        <title>Cullen/Frost Bankers, Inc.</title>
        <cusip>229899109</cusip>
        <identifiers>
          <isin value="US2298991090"/>
        </identifiers>
        <balance>13401.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1499035.86000000</valUSD>
        <pctVal>0.987324463546</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Brown &amp; Brown Inc</name>
        <lei>549300PC8KTJ71XKFY89</lei>
        <title>Brown &amp; Brown, Inc.</title>
        <cusip>115236101</cusip>
        <identifiers>
          <isin value="US1152361010"/>
        </identifiers>
        <balance>75080.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7778288.00000000</valUSD>
        <pctVal>5.123088934585</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>MKS Instruments Inc</name>
        <lei>549300KEQATBHAGVF505</lei>
        <title>MKS Instruments, Inc.</title>
        <cusip>55306N104</cusip>
        <identifiers>
          <isin value="US55306N1046"/>
        </identifiers>
        <balance>33663.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3659504.73000000</valUSD>
        <pctVal>2.410294937437</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Liberty Media Corp-Liberty Formula One</name>
        <lei>N/A</lei>
        <title>Liberty Media Corp.-Liberty Formula One</title>
        <cusip>531229755</cusip>
        <identifiers>
          <isin value="US5312297550"/>
        </identifiers>
        <balance>48905.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3786714.15000000</valUSD>
        <pctVal>2.494080106098</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Copart Inc</name>
        <lei>549300KVYX3JWMYEHU61</lei>
        <title>Copart, Inc.</title>
        <cusip>217204106</cusip>
        <identifiers>
          <isin value="US2172041061"/>
        </identifiers>
        <balance>114700.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>6010280.00000000</valUSD>
        <pctVal>3.958608753206</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Moelis &amp; Co</name>
        <lei>549300891QNU7VTQUR83</lei>
        <title>Moelis &amp; Co.</title>
        <cusip>60786M105</cusip>
        <identifiers>
          <isin value="US60786M1053"/>
        </identifiers>
        <balance>67461.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4621753.11000000</valUSD>
        <pctVal>3.044069879673</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Glacier Bancorp Inc</name>
        <lei>549300SMJAUKZB5D7V74</lei>
        <title>Glacier Bancorp, Inc.</title>
        <cusip>37637Q105</cusip>
        <identifiers>
          <isin value="US37637Q1058"/>
        </identifiers>
        <balance>36603.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1672757.10000000</valUSD>
        <pctVal>1.101744161345</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Thor Industries Inc</name>
        <lei>254900XZO1228PDSG060</lei>
        <title>Thor Industries, Inc.</title>
        <cusip>885160101</cusip>
        <identifiers>
          <isin value="US8851601018"/>
        </identifiers>
        <balance>39073.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4293731.97000000</valUSD>
        <pctVal>2.828022148779</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Waters Corp</name>
        <lei>5T547R1474YC9HOD8Q74</lei>
        <title>Waters Corp.</title>
        <cusip>941848103</cusip>
        <identifiers>
          <isin value="US9418481035"/>
        </identifiers>
        <balance>10926.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>3932158.14000000</valUSD>
        <pctVal>2.589875285676</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Graco Inc</name>
        <lei>4T5VJ4S81BRT6Q7GGT78</lei>
        <title>Graco, Inc.</title>
        <cusip>384109104</cusip>
        <identifiers>
          <isin value="US3841091040"/>
        </identifiers>
        <balance>17603.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>1540438.53000000</valUSD>
        <pctVal>1.014593903883</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Floor &amp; Decor Holdings Inc</name>
        <lei>549300M5FR3N688XGQ36</lei>
        <title>Floor &amp; Decor Holdings, Inc.</title>
        <cusip>339750101</cusip>
        <identifiers>
          <isin value="US3397501012"/>
        </identifiers>
        <balance>38030.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>4722185.10000000</valUSD>
        <pctVal>3.110218371044</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <signature>
      <ncom:dateSigned>2024-10-15</ncom:dateSigned>
      <ncom:nameOfApplicant>ULTRA SERIES FUND</ncom:nameOfApplicant>
      <ncom:signature>Greg Hoppe</ncom:signature>
      <ncom:signerName>Greg Hoppe</ncom:signerName>
      <ncom:title>Chief Financial Officer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
