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 2025Cullen Value FundBuy1,243255,545$9,120,392
Q1 2025Yacktman Asset ManagementSell-4,0001,243,500$45,885,150
Q1 2025Dodge & Cox Stock FundBuy15,115,07494,217,741$3,476,634,643
Q1 2025Olstein Capital ManagementBuy56,000167,000$6,162
Q1 2025Hillman Value FundSell-40,348108,575$4,006,418
Q1 2025Sequoia Financial AdvisorsSell-18,379426,880$15,751,886
Q1 2025Matrix Advisors Value FundBuy1,336728,041$26,864,713
Q1 2025Parnassus Endeavor FundBuy3,7801,925,525$71,051,873
Q1 2025First Eagle U.S. ValueBuy1,313,23635,414,313$1,306,788,138
Q1 2025Eagle Capital ManagementBuy11,890,80142,772,415$1,578,302,113
Q1 2025Gardner Russo & QuinnSell-167,2372,616,811$96,560,333
Q1 2025Tweedy, Browne Co All Funds (US)Sell-2,25232,326$1,192,829
Q1 2025Cullen Value FundBuy13,540254,302$9,383,748
Q4 2024Yacktman Asset ManagementSell-6,0001,247,500$46,818,675
Q4 2024Dodge & Cox Stock FundBuy5,039,82379,102,667$2,968,723,093
Q4 2024Hillman Value FundSell-82148,923$5,589,080
Q4 2024Sequoia Financial AdvisorsBuy54,521445,259$16,710,570
Q4 2024Matrix Advisors Value FundSell-4,129726,705$27,273,239
Q4 2024Parnassus Endeavor FundBuy9451,921,745$72,123,090
Q4 2024Eagle Capital ManagementBuy12,279,83630,881,614$1,158,986,973
Q4 2024First Eagle U.S. ValueBuy2,270,18634,101,077$1,279,813,401
Q4 2024Viking Global InvestorsBuy16,726,30019,818,985$743,806,507
Q4 2024Gardner Russo & QuinnSell-185,8792,784,048$104,485,322
Q4 2024Tweedy, Browne Co All Funds (US)Sell-90334,578$1,297,712
Q4 2024Cullen Value FundBuy3,005240,762$9,035,804
Q3 2024Yacktman Asset ManagementSell-167,5001,253,500$52,358,695
Q3 2024Dodge & Cox Stock FundBuy1,323,50074,062,844$3,093,604,994
Q3 2024Olstein Capital ManagementBuy21,000111,000$4,636
Q3 2024Mairs & Power Growth FundSell-1625,392$225,224
Q3 2024Hillman Value FundSell-38149,005$6,223,939

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.