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        <confirmingCopyFlag>false</confirmingCopyFlag>
        <returnCopyFlag>true</returnCopyFlag>
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        <credentials>
          <cik>0001422849</cik>
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      <periodOfReport>03-31-2016</periodOfReport>
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        <name>Capital World Investors</name>
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          <com:street1>333 SOUTH HOPE STREET</com:street1>
          <com:street2>55TH FLOOR</com:street2>
          <com:city>LOS ANGELES</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>90071</com:zipCode>
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      <form13FFileNumber>028-12786</form13FFileNumber>
      <provideInfoForInstruction5>N</provideInfoForInstruction5>
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    <signatureBlock>
      <name>Alan N. Berro</name>
      <title>Chair</title>
      <phone>213-486-9200</phone>
      <signature>Alan N. Berro</signature>
      <city>Los Angeles</city>
      <stateOrCountry>CA</stateOrCountry>
      <signatureDate>05-16-2016</signatureDate>
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      <tableEntryTotal>488</tableEntryTotal>
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            <form13FFileNumber>028-00218</form13FFileNumber>
            <name>CAPITAL GROUP COMPANIES INC</name>
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