COMCAST CORP-CLASS A (CMCSA) Stock Institutional Trading Activity


COMCAST CORP-CLASS A (CMCSA) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Eagle Capital Management, Renaissance Technologies LLC, Matrix Advisors Value Fund, Cullen Value Fund, and Yacktman Asset Management. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2022Sequoia Financial AdvisorsBuy5,069220,671$8,660
Q2 2022Matrix Advisors Value FundBuy141,665742,048$29,118
Q2 2022Parnassus Endeavor FundBuy4,457,02428,263,627$1,109,065
Q2 2022First Eagle U.S. ValueBuy203,52130,305,640$1,189,193
Q2 2022Gardner Russo & QuinnSell-155,4394,720,538$185,234
Q2 2022Disciplined Growth InvestorsSell-2,1485,120$201
Q2 2022Tweedy, Browne Co All Funds (US)Sell-5,1511,047,683$41,111
Q2 2022Hancock Classic ValueBuy11,51011,510$452
Q1 2022Yacktman Asset ManagementSell-41,2501,475,200$69,069
Q1 2022Dodge & Cox Stock FundBuy116,32584,782,490$3,969,516
Q1 2022Eagle Capital ManagementSell-872,95727,101,724$1,268,903
Q1 2022Matrix Private Capital GroupSell-3065,095$239
Q1 2022Mairs & Power Growth FundBuy7126,800$318
Q1 2022Hillman Value FundBuy1,74110,800$506
Q1 2022Sequoia Financial AdvisorsBuy16,870215,602$10,095
Q1 2022Matrix Advisors Value FundBuy72,636600,383$28,110
Q1 2022Renaissance Technologies LLCBuy4,007,1004,754,976$222,628
Q1 2022Viking Global InvestorsSell-134,42314,078,668$659,163
Q1 2022Parnassus Endeavor FundSell-1,036,71423,806,603$1,114,625
Q1 2022First Eagle U.S. ValueBuy707,69530,102,119$1,409,381
Q1 2022Gardner Russo & QuinnSell-155,7934,875,977$228,293
Q1 2022Disciplined Growth InvestorsSell-1,5247,268$340
Q1 2022Tweedy, Browne Co All Funds (US)Sell-5,9191,052,834$49,294
Q4 2021Yacktman Asset ManagementBuy7,0001,516,450$76,323
Q4 2021Torray FundBuy2,005321,979$16,205
Q4 2021Dodge & Cox Stock FundBuy958,09184,666,165$4,261,248
Q4 2021Eagle Capital ManagementSell-890,70527,974,681$1,407,966
Q4 2021Parnassus Endeavor FundBuy140,83924,843,317$1,250,364
Q4 2021Matrix Private Capital GroupBuy5775,401$272
Q4 2021Mairs & Power Growth FundBuy4916,088$306

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.