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          <ccc>XXXXXXXX</ccc>
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      <regLei>5493000SCRZM3WD72S74</regLei>
      <regStreet1>111 HUNTINGTON AVENUE</regStreet1>
      <regCity>BOSTON</regCity>
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      <regZipOrPostalCode>02199</regZipOrPostalCode>
      <regPhone>617-954-5000</regPhone>
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      <repPdEnd>2025-08-31</repPdEnd>
      <repPdDate>2025-05-31</repPdDate>
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      <totLiabs>12157197.14</totLiabs>
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        <name>Highwoods Properties Inc</name>
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        <name>Ventas Inc</name>
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        <name>American Homes 4 Rent</name>
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        <name>Goodman Group</name>
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        <name>Shurgard Self Storage Ltd</name>
        <lei>549300J0UEIKU81XO336</lei>
        <title>Shurgard Self Storage Ltd</title>
        <cusip>000000000</cusip>
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          <isin value="GG00BQZCBZ44"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GG</invCountry>

        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      </invstOrSec>
      <invstOrSec>
        <name>Ryman Hospitality Properties Inc</name>
        <lei>529900GCCWW9SRMPJR11</lei>
        <title>Ryman Hospitality Properties Inc</title>
        <cusip>78377T107</cusip>
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          <isin value="US78377T1079"/>
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        <balance>313104.00000000</balance>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Lamar Advertising Co</name>
        <lei>529900Y8WW4MKVPTB543</lei>
        <title>Lamar Advertising Co</title>
        <cusip>512816109</cusip>
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          <isin value="US5128161099"/>
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        <balance>287893.00000000</balance>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Parkway Life Real Estate Investment Trust</name>
        <lei>549300I4DKVD2OF5LW91</lei>
        <title>Parkway Life Real Estate Investment Trust</title>
        <cusip>000000000</cusip>
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          <isin value="SG1V52937132"/>
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        <balance>4866067.00000000</balance>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>SG</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Cellnex Telecom SA</name>
        <lei>5493008T4YG3AQUI7P67</lei>
        <title>Cellnex Telecom SA</title>
        <cusip>000000000</cusip>
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          <isin value="ES0105066007"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>ES</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Sunstone Hotel Investors Inc</name>
        <lei>529900ZQ2V52V96ATF67</lei>
        <title>Sunstone Hotel Investors Inc</title>
        <cusip>867892101</cusip>
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          <isin value="US8678921011"/>
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        <balance>1733428.00000000</balance>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Douglas Emmett Inc</name>
        <lei>N/A</lei>
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        <cusip>25960P109</cusip>
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          <isin value="US25960P1093"/>
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        <curCd>USD</curCd>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
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        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Link REIT</name>
        <lei>529900XUE70U36QX5M62</lei>
        <title>Link REIT</title>
        <cusip>000000000</cusip>
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          <isin value="HK0823032773"/>
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        <balance>10104500.00000000</balance>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>HK</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>2</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Grainger PLC</name>
        <lei>2138007CEIRKZMNI2979</lei>
        <title>Grainger PLC</title>
        <cusip>000000000</cusip>
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          <isin value="GB00B04V1276"/>
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        <balance>12000137.00000000</balance>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GB</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Kimco Realty Corp</name>
        <lei>254900ARY41P4V1JL861</lei>
        <title>Kimco Realty Corp</title>
        <cusip>49446R109</cusip>
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          <isin value="US49446R1095"/>
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        <balance>2826339.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>60087967.14000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Charter Hall Group</name>
        <lei>N/A</lei>
        <title>Charter Hall Group</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="AU000000CHC0"/>
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        <balance>2268183.00000000</balance>
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        <currencyConditional curCd="AUD" exchangeRt="1.55135000"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>AU</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Japan Metropolitan Fund Invest</name>
        <lei>353800QDHNIP60E1LQ93</lei>
        <title>Japan Metropolitan Fund Invest</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="JP3039710003"/>
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        <balance>41760.00000000</balance>
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        <currencyConditional curCd="JPY" exchangeRt="143.89500000"/>
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        <pctVal>1.252180899513</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>JP</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Essex Property Trust Inc</name>
        <lei>549300TR2H2VEFX0NC60</lei>
        <title>Essex Property Trust Inc</title>
        <cusip>297178105</cusip>
        <identifiers>
          <isin value="US2971781057"/>
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        <balance>224533.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>63744918.70000000</valUSD>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
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          <isLoanByFund>N</isLoanByFund>
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      <invstOrSec>
        <name>Helios Towers PLC</name>
        <lei>213800DGC7GS4XCHCU30</lei>
        <title>Helios Towers PLC</title>
        <cusip>000000000</cusip>
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          <isin value="GB00BJVQC708"/>
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        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GB</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>SBA Communications Corp</name>
        <lei>5299001HX8ZN8Y8QIT49</lei>
        <title>SBA Communications Corp</title>
        <cusip>78410G104</cusip>
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          <isin value="US78410G1040"/>
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        <balance>98094.00000000</balance>
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        <curCd>USD</curCd>
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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>MFS Institutional Money Market Portfolio</name>
        <lei>5L2W638H85N8T1136O07</lei>
        <title>MFS Institutional Money Market Portfolio</title>
        <cusip>55291X109</cusip>
        <identifiers>
          <isin value="US55291X1090"/>
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        <curCd>USD</curCd>
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        <assetCat>EC</assetCat>
        <issuerCat>RF</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>UNITE Group PLC/The</name>
        <lei>213800BBUUWVDH9YI827</lei>
        <title>UNITE Group PLC/The</title>
        <cusip>000000000</cusip>
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          <isin value="GB0006928617"/>
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        <assetCat>EC</assetCat>
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        <invCountry>GB</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Simon Property Group Inc</name>
        <lei>529900GQL5X8H7AO3T64</lei>
        <title>Simon Property Group Inc</title>
        <cusip>828806109</cusip>
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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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        <name>NNN REIT Inc</name>
        <lei>5493008JKH5SOTI0JS97</lei>
        <title>NNN REIT Inc</title>
        <cusip>637417106</cusip>
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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>Canadian Apartment Properties REIT</name>
        <lei>549300B1MYVTQEB2DI90</lei>
        <title>Canadian Apartment Properties REIT</title>
        <cusip>134921105</cusip>
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          <isin value="CA1349211054"/>
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        <assetCat>EC</assetCat>
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        <invCountry>CA</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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        <name>National Storage REIT</name>
        <lei>N/A</lei>
        <title>National Storage REIT</title>
        <cusip>000000000</cusip>
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          <isin value="AU000000NSR2"/>
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        <invCountry>AU</invCountry>
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        <fairValLevel>2</fairValLevel>
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        <name>Vonovia SE</name>
        <lei>5299005A2ZEP6AP7KM81</lei>
        <title>Vonovia SE</title>
        <cusip>000000000</cusip>
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        <assetCat>EC</assetCat>
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        <invCountry>DE</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Mid-America Apartment Communities Inc</name>
        <lei>549300FQZKFR5YNSHZ21</lei>
        <title>Mid-America Apartment Communities Inc</title>
        <cusip>59522J103</cusip>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
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        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
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      <invstOrSec>
        <name>Digital Realty Trust Inc</name>
        <lei>549300HKCZ31D08NEI41</lei>
        <title>Digital Realty Trust Inc</title>
        <cusip>253868103</cusip>
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        <balance>524450.00000000</balance>
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        <curCd>USD</curCd>
        <valUSD>89953664.00000000</valUSD>
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        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>US</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
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          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Segro PLC</name>
        <lei>213800XC35KGM9NFC641</lei>
        <title>Segro PLC</title>
        <cusip>000000000</cusip>
        <identifiers>
          <isin value="GB00B5ZN1N88"/>
        </identifiers>
        <balance>3852809.00000000</balance>
        <units>NS</units>
        <currencyConditional curCd="GBP" exchangeRt="0.74219800"/>
        <valUSD>36181825.78000000</valUSD>
        <pctVal>1.583309623701</pctVal>
        <payoffProfile>Long</payoffProfile>
        <assetCat>EC</assetCat>
        <issuerCat>CORP</issuerCat>
        <invCountry>GB</invCountry>
        <isRestrictedSec>N</isRestrictedSec>

        <fairValLevel>1</fairValLevel>
        <securityLending>
          <isCashCollateral>N</isCashCollateral>
          <isNonCashCollateral>N</isNonCashCollateral>
          <isLoanByFund>N</isLoanByFund>
        </securityLending>
      </invstOrSec>
      <invstOrSec>
        <name>Weyerhaeuser Co</name>
        <lei>08IRJODWFYBI7QWRGS31</lei>
        <title>Weyerhaeuser Co</title>
        <cusip>962166104</cusip>
        <identifiers>
          <isin value="US9621661043"/>
        </identifiers>
        <balance>1598761.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>41423897.51000000</valUSD>
        <pctVal>1.812701657942</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>Extra Space Storage Inc</name>
        <lei>N/A</lei>
        <title>Extra Space Storage Inc</title>
        <cusip>30225T102</cusip>
        <identifiers>
          <isin value="US30225T1025"/>
        </identifiers>
        <balance>479616.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>72493958.40000000</valUSD>
        <pctVal>3.172321449249</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>Rexford Industrial Realty Inc</name>
        <lei>549300MSLO0DF0EMX355</lei>
        <title>Rexford Industrial Realty Inc</title>
        <cusip>76169C100</cusip>
        <identifiers>
          <isin value="US76169C1009"/>
        </identifiers>
        <balance>1363748.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>48058479.52000000</valUSD>
        <pctVal>2.103029669843</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>Healthcare Realty Trust Inc</name>
        <lei>549300L0I14L7I0VLX84</lei>
        <title>Healthcare Realty Trust Inc</title>
        <cusip>42226K105</cusip>
        <identifiers>
          <isin value="US42226K1051"/>
        </identifiers>
        <balance>2405400.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>34878300.00000000</valUSD>
        <pctVal>1.526267590367</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>Equinix Inc</name>
        <lei>549300EVUN2BTLJ3GT74</lei>
        <title>Equinix Inc</title>
        <cusip>29444U700</cusip>
        <identifiers>
          <isin value="US29444U7000"/>
        </identifiers>
        <balance>141753.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>125992901.46000000</valUSD>
        <pctVal>5.513424740161</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>Equity LifeStyle Properties Inc</name>
        <lei>529900PEQG66LENB6798</lei>
        <title>Equity LifeStyle Properties Inc</title>
        <cusip>29472R108</cusip>
        <identifiers>
          <isin value="US29472R1086"/>
        </identifiers>
        <balance>837729.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>53254432.53000000</valUSD>
        <pctVal>2.330403557912</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>DigitalBridge Group Inc</name>
        <lei>549300XG87L902AGBO89</lei>
        <title>DigitalBridge Group Inc</title>
        <cusip>25401T603</cusip>
        <identifiers>
          <isin value="US25401T6038"/>
        </identifiers>
        <balance>706034.00000000</balance>
        <units>NS</units>
        <curCd>USD</curCd>
        <valUSD>7808736.04000000</valUSD>
        <pctVal>0.341708762743</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>
    <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>2025-06-27</ncom:dateSigned>
      <ncom:nameOfApplicant>MFS SERIES TRUST XIII</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>
