COMCAST CORP-CLASS A (CMCSA) Top Institutional Shareholders
COMCAST CORP-CLASS A (CMCSA) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $84.30B in CMCSA holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of CMCSA tracked by InsiderSet, reporting ownership valued at approximately $9.04B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $7.42B, representing an estimated loss of -17.90% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 50% of the total disclosed CMCSA value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, State Street Corp, and several other long-term asset managers with concentrated positions in COMCAST CORP-CLASS A (CMCSA).
This page ranks the largest institutional CMCSA shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
1,990
Total Reported Value
$84.30B
Largest Holder
Blackrock, Inc.
Largest Position
$9.04B
Insider Transactions (90d)
7
Latest Filing Quarter
Q2 2026
New Institutional Positions
28
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.16% | 314,985,765 | $9,043,241,311 | $7,424,214,481 | -$1,619,026,830 | -17.90% | |
| Vanguard Capital Management Llc | 0.17% | 233,154,772 | $6,693,873,504 | $5,495,457,976 | -$1,198,415,528 | -17.90% | |
| State Street Corp | 0.18% | 182,735,113 | $5,246,325,094 | $4,307,066,613 | -$939,258,481 | -17.90% | |
| Capital World Investors | 0.71% | 182,141,779 | $5,229,504,203 | $4,293,081,731 | -$936,422,472 | -17.91% | |
| Charles Schwab Investment Management Inc | 0.53% | 121,558,654 | $3,491,379,019 | $2,865,137,475 | -$626,241,544 | -17.94% | |
| Dodge & Cox Stock Fund | V. D. Dodge, E. M. Cox | 1.78% | 113,108,244 | $3,247,337,685 | $2,665,961,311 | -$581,376,374 | -17.90% |
| Capital Research Global Investors | 0.40% | 89,574,393 | $2,571,689,927 | $2,111,268,443 | -$460,421,484 | -17.90% | |
| Geode Capital Management, Llc | 0.16% | 88,110,009 | $2,520,842,753 | $2,076,752,912 | -$444,089,841 | -17.62% | |
| Vanguard Portfolio Management Llc | 0.12% | 76,713,093 | $2,202,432,900 | $1,808,127,602 | -$394,305,298 | -17.90% | |
| Fmr Llc | 0.09% | 60,591,077 | $1,739,569,841 | $1,428,131,685 | -$311,438,156 | -17.90% | |
| Storebrand Asset Management As | 0.47% | 31,392,322 | $1,411,150,468 | $739,917,030 | -$671,233,438 | -47.57% | |
| Invesco Ltd. | 0.20% | 44,489,802 | $1,277,302,203 | $1,048,624,633 | -$228,677,570 | -17.90% | |
| Morgan Stanley | 0.07% | 42,940,885 | $1,232,832,903 | $1,012,116,659 | -$220,716,244 | -17.90% | |
| Ameriprise Financial Inc | 0.28% | 42,441,056 | $1,218,490,492 | $1,000,335,690 | -$218,154,802 | -17.90% | |
| Bank Of America Corp | 0.09% | 40,864,921 | $1,173,231,888 | $963,186,188 | -$210,045,700 | -17.90% | |
| Goldman Sachs Group Inc | 0.15% | 38,782,574 | $1,113,447,706 | $914,105,269 | -$199,342,437 | -17.90% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 1.44% | 37,780,637 | $1,084,682,099 | $890,489,614 | -$194,192,485 | -17.90% |
| Eagle Capital Management | Ravenel Boykin Curry IV | 3.62% | 37,575,087 | $1,078,780,757 | $885,644,801 | -$193,135,956 | -17.90% |
| Northern Trust Corp | 0.14% | 36,359,424 | $1,043,879,062 | $856,991,624 | -$186,887,438 | -17.90% | |
| Franklin Resources Inc | 0.22% | 31,636,333 | $908,279,108 | $745,668,369 | -$162,610,739 | -17.90% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.19% | 31,207,937 | $895,979,871 | $735,571,075 | -$160,408,796 | -17.90% | |
| Dimensional Fund Advisors Lp | 0.18% | 29,461,308 | $845,919,177 | $694,403,030 | -$151,516,147 | -17.91% | |
| Bank Of New York Mellon Corp | 0.14% | 27,245,876 | $782,229,082 | $642,185,297 | -$140,043,785 | -17.90% | |
| Hotchkis & Wiley Capital Management Llc | 2.38% | 26,799,751 | $769,420,851 | $631,670,131 | -$137,750,720 | -17.90% | |
| Harris Associates L P | 1.01% | 26,448,063 | $759,323,901 | $623,380,845 | -$135,943,056 | -17.90% | |
| Legal & General Group Plc | 0.16% | 24,372,610 | $699,737,634 | $574,462,418 | -$125,275,216 | -17.90% | |
| Ubs Group Ag | 0.12% | 23,208,137 | $666,305,599 | $547,015,789 | -$119,289,810 | -17.90% | |
| Nuveen, Llc | 0.16% | 20,821,363 | $597,781,328 | $490,759,526 | -$107,021,802 | -17.90% | |
| Vanguard Fiduciary Trust Co | 0.15% | 20,200,373 | $579,952,709 | $476,122,792 | -$103,829,917 | -17.90% | |
| Raymond James Financial Inc | 0.15% | 17,008,857 | $488,378,657 | $400,898,759 | -$87,479,898 | -17.91% | |
| Clearbridge Investments, Llc | 0.42% | 16,956,292 | $486,777,832 | $399,659,802 | -$87,118,030 | -17.90% | |
| Deutsche Bank Ag\ | 0.14% | 15,061,322 | $432,410,555 | $354,995,360 | -$77,415,195 | -17.90% | |
| Capital International Investors | 0.09% | 14,060,861 | $403,691,347 | $331,414,494 | -$72,276,853 | -17.90% | |
| First Trust Advisors Lp | 0.28% | 13,592,149 | $390,230,580 | $320,366,952 | -$69,863,628 | -17.90% | |
| Amundi | 0.10% | 12,803,578 | $367,589,402 | $301,780,333 | -$65,809,069 | -17.90% | |
| Barclays Plc | 0.13% | 12,533,543 | $359,838,019 | $295,415,609 | -$64,422,410 | -17.90% | |
| Arrowstreet Capital, Limited Partnership | 0.19% | 12,369,364 | $355,124,440 | $291,545,909 | -$63,578,531 | -17.90% | |
| Aqr Capital Management Llc | 0.16% | 12,287,677 | $350,813,197 | $289,620,547 | -$61,192,650 | -17.44% | |
| Healthcare Of Ontario Pension Plan Trust Fund | 0.55% | 11,616,490 | $333,509,428 | $273,800,669 | -$59,708,759 | -17.90% | |
| Rothschild & Co Wealth Management Uk Ltd | 5.05% | 11,493,697 | $329,984,041 | $270,906,438 | -$59,077,603 | -17.90% | |
| Allianz Asset Management Gmbh | 0.38% | 11,382,849 | $326,801,593 | $268,293,751 | -$58,507,842 | -17.90% | |
| Wells Fargo & Company/Mn | 0.06% | 11,267,965 | $323,503,275 | $265,585,935 | -$57,917,340 | -17.90% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.21% | 11,115,188 | $319,117,047 | $261,984,981 | -$57,132,066 | -17.90% | |
| Swiss National Bank | 0.18% | 10,666,200 | $306,226,602 | $251,402,334 | -$54,824,268 | -17.90% | |
| Massachusetts Financial Services Co | 0.10% | 10,486,288 | $305,503,322 | $247,161,808 | -$58,341,514 | -19.10% | |
| National Pension Service | 0.23% | 10,358,164 | $297,382,888 | $244,141,925 | -$53,240,963 | -17.90% | |
| Victory Capital Management Inc | 0.18% | 9,539,298 | $273,873,245 | $224,841,254 | -$49,031,991 | -17.90% | |
| California Public Employees Retirement System | 0.17% | 9,351,906 | $268,493,221 | $220,424,424 | -$48,068,797 | -17.90% | |
| Bnp Paribas Financial Markets | 0.17% | 8,850,691 | $254,103,339 | $208,610,787 | -$45,492,552 | -17.90% | |
| First Pacific Advisors, Lp | 3.46% | 8,592,563 | $246,692,484 | $202,526,710 | -$44,165,774 | -17.90% |
Frequently asked questions about CMCSA
Who owns the most CMCSA stock?
The largest holders of CMCSA are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for COMCAST CORP-CLASS A (CMCSA).
Is CMCSA widely held by superinvestors?
Many widely followed stocks like CMCSA appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CMCSA is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.