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 quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2024 | Viking Global Investors | Buy | 16,726,300 | 19,818,985 | $743,806,507 |
| Q4 2024 | Eagle Capital Management | Buy | 12,279,836 | 30,881,614 | $1,158,986,973 |
| Q4 2024 | Dodge & Cox Stock Fund | Buy | 5,039,823 | 79,102,667 | $2,968,723,093 |
| Q4 2024 | First Eagle U.S. Value | Buy | 2,270,186 | 34,101,077 | $1,279,813,401 |
| Q4 2024 | Gardner Russo & Quinn | Sell | -185,879 | 2,784,048 | $104,485,322 |
| Q4 2024 | Sequoia Financial Advisors | Buy | 54,521 | 445,259 | $16,710,570 |
| Q4 2024 | Yacktman Asset Management | Sell | -6,000 | 1,247,500 | $46,818,675 |
| Q4 2024 | Matrix Advisors Value Fund | Sell | -4,129 | 726,705 | $27,273,239 |
| Q4 2024 | Cullen Value Fund | Buy | 3,005 | 240,762 | $9,035,804 |
| Q4 2024 | Parnassus Endeavor Fund | Buy | 945 | 1,921,745 | $72,123,090 |
| Q4 2024 | Tweedy, Browne Co All Funds (US) | Sell | -903 | 34,578 | $1,297,712 |
| Q4 2024 | Hillman Value Fund | Sell | -82 | 148,923 | $5,589,080 |
| Q3 2024 | Viking Global Investors | Sell | -10,985,983 | 3,092,685 | $129,181,452 |
| Q3 2024 | Dodge & Cox Stock Fund | Buy | 1,323,500 | 74,062,844 | $3,093,604,994 |
| Q3 2024 | Yacktman Asset Management | Sell | -167,500 | 1,253,500 | $52,358,695 |
| Q3 2024 | Sequoia Financial Advisors | Buy | 145,012 | 390,738 | $16,321,110 |
| Q3 2024 | Gardner Russo & Quinn | Sell | -94,895 | 2,969,927 | $124,053,844 |
| Q3 2024 | Parnassus Endeavor Fund | Buy | 68,139 | 1,920,800 | $80,231,816 |
| Q3 2024 | Eagle Capital Management | Sell | -63,567 | 18,601,778 | $776,996,267 |
| Q3 2024 | Olstein Capital Management | Buy | 21,000 | 111,000 | $4,636 |
| Q3 2024 | Matrix Advisors Value Fund | Buy | 6,218 | 730,834 | $30,526,936 |
| Q3 2024 | Tweedy, Browne Co All Funds (US) | Sell | -2,160 | 35,481 | $1,482,041 |
| Q3 2024 | First Eagle U.S. Value | Sell | -753 | 31,830,891 | $1,329,576,336 |
| Q3 2024 | Cullen Value Fund | Buy | 611 | 237,757 | $9,931,119 |
| Q3 2024 | Mairs & Power Growth Fund | Sell | -162 | 5,392 | $225,224 |
| Q3 2024 | Hillman Value Fund | Sell | -38 | 149,005 | $6,223,939 |
| Q2 2024 | Dodge & Cox Stock Fund | Sell | -404,596 | 72,739,344 | $2,848,472,711 |
| Q2 2024 | Parnassus Endeavor Fund | Buy | 392,245 | 1,852,661 | $72,550,205 |
| Q2 2024 | Eagle Capital Management | Sell | -257,614 | 18,665,345 | $730,934,910 |
| Q2 2024 | First Eagle U.S. Value | Sell | -164,674 | 31,831,644 | $1,246,527,179 |
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.
Related CMCSA insights
- CMCSA Overview
- CMCSA Institutions
- CMCSA Institutional Ownership
- CMCSA Top Shareholders
- CMCSA Institutional Buying
- CMCSA Institutional Selling
- CMCSA Ownership Changes
- CMCSA Insiders
- Communication Services Sector Institutional Ownership
- Communication Services Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Communication Services Stocks By Institutional Owners in Q1 2026
- Most Sold Communication Services Stocks By Institutional Owners in Q1 2026
- Top Institutional Investor Stock Rankings