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      <invstOrSec>
        <name>Boston Scientific Corp</name>
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      <invstOrSec>
        <name>CBRE Group Inc</name>
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        <assetCat>EC</assetCat>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Block Inc</name>
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        <assetCat>EC</assetCat>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Fiserv Inc</name>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Microsoft Corp</name>
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        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Veeva Systems Inc</name>
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        <assetCat>EC</assetCat>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Trane Technologies PLC</name>
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        <assetCat>EC</assetCat>
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        <invCountry>IE</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>NVIDIA Corp</name>
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      <invstOrSec>
        <name>Take-Two Interactive Software Inc</name>
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      <invstOrSec>
        <name>O'Reilly Automotive Inc</name>
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      <invstOrSec>
        <name>Linde PLC</name>
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        <assetCat>EC</assetCat>
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        <name>Gartner Inc</name>
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        <name>Ares Management Corp</name>
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        <name>TransUnion</name>
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        <name>Guidewire Software Inc</name>
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        <name>Marvell Technology Inc</name>
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        <name>CoStar Group Inc</name>
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        <name>Netflix Inc</name>
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        <name>Cadence Design Systems Inc</name>
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        <name>Intuitive Surgical Inc</name>
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        <name>Mastercard Inc</name>
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        <name>Broadcom Inc</name>
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        <name>Abbott Laboratories</name>
        <lei>HQD377W2YR662HK5JX27</lei>
        <title>Abbott Laboratories</title>
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        <name>Apollo Global Management Inc</name>
        <lei>254900LMFT1CY9IYB476</lei>
        <title>Apollo Global Management Inc</title>
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      <invstOrSec>
        <name>MFS Institutional Money Market Portfolio</name>
        <lei>5L2W638H85N8T1136O07</lei>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>Goldman Sachs Group Inc/The</name>
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        <fairValLevel>1</fairValLevel>
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      <invstOrSec>
        <name>ServiceNow Inc</name>
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      <invstOrSec>
        <name>General Electric Co</name>
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        <name>Meta Platforms Inc</name>
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        <name>KKR &amp; Co Inc</name>
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        <name>Autodesk Inc</name>
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        <name>Crowdstrike Holdings Inc</name>
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        <name>GE Vernova Inc</name>
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        <name>Starbucks Corp</name>
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        <name>Datadog Inc</name>
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        <name>Shopify Inc</name>
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        <fairValLevel>1</fairValLevel>
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        <name>KLA Corp</name>
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        <name>Verisk Analytics Inc</name>
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        <name>Synopsys Inc</name>
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        <name>Apple Inc</name>
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        <name>Danaher Corp</name>
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        <name>Taiwan Semiconductor Manufacturing Co Ltd</name>
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        <name>Howmet Aerospace Inc</name>
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        <name>AppLovin Corp</name>
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        <name>Eli Lilly &amp; Co</name>
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        <name>Arthur J Gallagher &amp; Co</name>
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        <name>Amazon.com Inc</name>
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        <name>Eaton Corp PLC</name>
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        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
    </invstOrSecs>
    <explntrNotes>
      <explntrNote note="Monthly returns presented in Item B.5(a) have been calculated without deducting any applicable sales loads or redemption fees." noteItem="B.5.a"/>
    </explntrNotes>
    <signature>
      <ncom:dateSigned>2025-04-30</ncom:dateSigned>
      <ncom:nameOfApplicant>MFS VARIABLE INSURANCE TRUST</ncom:nameOfApplicant>
      <ncom:signature>James Byrne</ncom:signature>
      <ncom:signerName>James Byrne</ncom:signerName>
      <ncom:title>Assistant Treasurer</ncom:title>
    </signature>
  </formData>
  <documents>XXXX</documents>
</edgarSubmission>
