COMCAST CORP-CLASS A (CMCSA) Institutional Ownership Changes & 13F Activity

COMCAST CORP-CLASS A (CMCSA) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC, Eagle Capital Management, First Eagle U.S. Value, Matrix Advisors Value Fund, and Torray Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q3 2021Longleaf PartnersSell-2,145,1992,503,917$140,044
Q3 2021Parnassus Endeavor FundBuy1,639,06824,702,478$1,381,610
Q3 2021Eagle Capital ManagementSell-913,27028,865,386$1,614,441
Q3 2021Trian Fund ManagementSell-806,05019,991,416$1,118,120
Q3 2021First Eagle U.S. ValueSell-422,61529,449,845$1,647,130
Q3 2021Dodge & Cox Stock FundSell-276,42383,708,074$4,681,793
Q3 2021Gardner Russo & QuinnSell-174,1285,189,614$290,255
Q3 2021Viking Global InvestorsBuy131,55810,176,623$569,179
Q3 2021Sequoia Financial AdvisorsSell-104,73348,357$2,705
Q3 2021Yacktman Asset ManagementSell-9,2001,509,450$84,424
Q3 2021Sound Shore ManagementSell-7,0331,651,691$92,379
Q3 2021Hillman Value FundBuy5,4719,611$537
Q3 2021Matrix Advisors Value FundBuy4,375413,422$23,123
Q3 2021Tweedy, Browne Co All Funds (US)Sell-1,8671,121,847$62,745
Q3 2021Torray FundBuy482319,974$17,896
Q3 2021Matrix Private Capital GroupBuy2844,824$270
Q3 2021Mairs & Power Growth FundSell-1505,597$313
Q2 2021Eagle Capital ManagementSell-8,347,68929,778,656$1,697,979
Q2 2021Dodge & Cox Stock FundSell-1,216,24683,984,497$4,788,796
Q2 2021Parnassus Endeavor FundBuy970,96923,063,410$1,315,076
Q2 2021Trian Fund ManagementBuy939,57420,797,466$1,185,872
Q2 2021Egerton Capital UKBuy693,86410,144,500$578,439
Q2 2021First Eagle U.S. ValueSell-308,60829,872,460$1,703,328
Q2 2021Gardner Russo & QuinnSell-167,5585,363,742$305,841
Q2 2021Matrix Advisors Value FundBuy84,849409,047$23,324
Q2 2021Sequoia Financial AdvisorsSell-29,804153,090$8,729
Q2 2021Tweedy, Browne Co All Funds (US)Sell-21,8841,123,714$64,074
Q2 2021Sound Shore ManagementSell-7,3041,658,724$94,580
Q2 2021Yacktman Asset ManagementSell-5,5501,518,650$86,593
Q2 2021Longleaf PartnersSell-3,8614,649,116$265,092

Frequently asked questions about CMCSA activity

  • Which institutional owners are buying CMCSA?

    Institutional owners buying CMCSA 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 CMCSA activity?

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

  • Is institutional interest in CMCSA increasing?

    Institutional interest in CMCSA 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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