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          <cik>0001256071</cik>
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      <periodOfReport>06-30-2025</periodOfReport>
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      <reportCalendarOrQuarter>06-30-2025</reportCalendarOrQuarter>
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        <name>PLATINUM INVESTMENT MANAGEMENT LTD</name>
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          <ns1:street1>C/O PLATINUM ASSET MANAGEMENT</ns1:street1>
          <ns1:street2>LEVEL 8, 7 MACQUARIE PLACE</ns1:street2>
          <ns1:city>SYDNEY AUSTRALIA 2000</ns1:city>
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          <ns1:zipCode>00000</ns1:zipCode>
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      <name>Joanne Jefferies</name>
      <title>Chief Legal and Compliance Officer</title>
      <phone>6 129 255-7574</phone>
      <signature>/s/Joanne Jefferies</signature>
      <city>Sydney</city>
      <stateOrCountry>C3</stateOrCountry>
      <signatureDate>07-18-2025</signatureDate>
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