MATTEL INC (MAT) Institutional Ownership Changes & 13F Activity

MATTEL INC (MAT). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Longleaf Partners, Ariel Appreciation Fund, Sequoia Financial Advisors, Renaissance Technologies LLC, and Miller Value Partners.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2021Ariel Appreciation FundSell-616,90715,309,847$304,972
Q1 2021Renaissance Technologies LLCBuy410,4001,105,900$22,030
Q1 2021Dodge & Cox Stock FundSell-19,30037,000$737
Q4 2020Dodge & Cox Stock FundSell-12,579,72156,300$982
Q4 2020Longleaf PartnersSell-10,660,99817,417,239$303,931
Q4 2020Ariel Appreciation FundSell-1,287,87215,926,754$277,922
Q4 2020Renaissance Technologies LLCBuy425,600695,500$12,136
Q3 2020Dodge & Cox Stock FundSell-10,712,28812,636,021$147,841
Q3 2020Longleaf PartnersSell-1,080,23228,078,237$328,514
Q3 2020Ariel Appreciation FundSell-473,36717,214,626$201,411
Q2 2020Longleaf PartnersSell-273,40729,158,469$281,962
Q2 2020Dodge & Cox Stock FundSell-124,05623,348,309$225,778
Q2 2020Ariel Appreciation FundBuy88,49817,687,993$171,043
Q1 2020Dodge & Cox Stock FundSell-15,459,94323,472,365$206,792
Q1 2020Longleaf PartnersSell-3,348,58129,431,876$259,295
Q1 2020Ariel Appreciation FundBuy2,291,82917,599,495$155,052
Q1 2020Renaissance Technologies LLCSell-886,200269,900$2,378
Q4 2019Longleaf PartnersSell-1,153,63432,780,457$444,175
Q4 2019Renaissance Technologies LLCSell-657,1751,156,100$15,665
Q4 2019Dodge & Cox Stock FundBuy79,40038,932,308$527,533
Q4 2019Ariel Appreciation FundSell-63,72115,307,666$207,419
Q3 2019Ariel Appreciation FundBuy1,674,94915,371,387$175,080
Q3 2019Longleaf PartnersSell-719,00533,934,091$386,509
Q3 2019Dodge & Cox Stock FundBuy550,99138,852,908$442,535
Q2 2019Ariel Appreciation FundBuy2,309,76413,696,438$153,537
Q2 2019Dodge & Cox Stock FundBuy1,283,65638,301,917$429,364
Q2 2019Longleaf PartnersSell-1,182,56834,653,096$388,461
Q1 2019Longleaf PartnersSell-4,011,87635,835,664$465,863
Q1 2019Dodge & Cox Stock FundBuy1,647,00437,018,261$481,237
Q1 2019Renaissance Technologies LLCBuy1,245,2751,813,275$23,573

Frequently asked questions about MAT activity

  • Which institutional owners are buying MAT?

    Institutional owners buying MAT include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MAT activity?

    "Buy" means an investor increased their reported position in MAT compared to the prior reporting period. This reflects growing exposure to MATTEL INC (MAT) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MAT increasing?

    Institutional interest in MAT can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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