CMCSA in the 13F filings

Comcast Corp New · CUSIP 20030N101

Quarter

Q3 2026 · early filers Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024 Q4 2023

Quarter end: 31 Mar 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 1 May 2026
Managers listing it: 43; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q4 2025 and Q1 2026; 30 listed it in both
Shares listed: 709,643,684; combined, among listed positions
Reported value: $20.4bn; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 17 buyers (opened or added shares) and 29 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +30,378,080.

Managers listing CMCSA in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

43 of 43 holders

				Action		Filing
Capital World Investors	182,141,779	$5.2bn	0.71%	Added	+41,798,380	13 May 2026 (the filing on sec.gov)
Invesco Ltd	119,801,906	$3.4bn	0.33%	Trimmed	-5,182,704	12 May 2026 (the filing on sec.gov)
Dodge & Cox	113,108,244	$3.2bn	1.78%	Added	+140,730	14 May 2026 (the filing on sec.gov)
Capital Research Global Investors	89,574,393	$2.6bn	0.40%	Added	+33,909,460	13 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	60,591,077	$1.7bn	0.09%	Trimmed	-6,495,485	15 May 2026 (the filing on sec.gov)
First Eagle Investment Management LLC	37,780,637	$1.1bn	1.84%	Added	+1,608,692	14 May 2026 (the filing on sec.gov)
Harris Associates LP	26,448,063	$759m	1.01%	Trimmed	-1,010,365	15 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP	12,369,364	$355m	0.19%	Trimmed	-2,014,537	14 May 2026 (the filing on sec.gov)
AQR Capital Management LLC	12,287,677	$351m	0.16%	Added	+1,575,457	15 May 2026 (the filing on sec.gov)
MFS Investment Management	10,486,288	$306m	0.10%	New	new	14 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	9,073,540	$261m	under 0.1%	Trimmed	-3,787,693	15 May 2026 (the filing on sec.gov)
AllianceBernstein LP	5,009,519	$150m	under 0.1%	Trimmed	-355,983	15 May 2026 (the filing on sec.gov)
Artisan Partners LP	4,475,806	$129m	0.21%	Added	+148,347	13 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	3,811,429	$109m	0.08%	Added	+2,895,840	27 Oct 2026 (the filing on sec.gov)
Man Group PLC	2,627,384	$75m	0.14%	Trimmed	-4,829,930	15 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP	2,336,114	$67m	under 0.1%	Trimmed	-1,349,845	15 May 2026 (the filing on sec.gov)
Wellington Management Group LLP	2,052,373	$59m	under 0.1%	Added	+40,732	15 May 2026 (the filing on sec.gov)
Citadel Advisors LLC	1,894,143	$54m	under 0.1%	Trimmed	-2,836,565	15 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC	1,633,710	$47m	0.19%	New	new	15 May 2026 (the filing on sec.gov)
Millennium Management LLC	1,347,669	$39m	under 0.1%	Trimmed	-5,787,243	15 May 2026 (the filing on sec.gov)
Bridgewater Associates LP	1,192,620	$34m	0.15%	Trimmed	-2,317,392	15 May 2026 (the filing on sec.gov)
Davidson Kempner Capital Management LP	1,151,593	$33m	0.40%	Added	+936,593	15 May 2026 (the filing on sec.gov)
Holocene Advisors LP	1,047,065	$30m	0.07%	Trimmed	-5,534,783	15 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC	999,563	$29m	under 0.1%	Trimmed	-8,784,935	13 May 2026 (the filing on sec.gov)
Tudor Investment Corp	962,219	$28m	0.05%	New	new	15 May 2026 (the filing on sec.gov)

Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Capital World Investorsexisting position · 182,141,779 shares now+41,798,380
Capital Research Global Investorsexisting position · 89,574,393 shares now+33,909,460
MFS Investment Managementnew position · 10,486,288 shares now+10,486,288
Neuberger Berman Group LLCexisting position · 3,811,429 shares now+2,895,840
Voloridge Investment Management LLCnew position · 1,633,710 shares now+1,633,710

Reductions

Acadian Asset Management LLCexisting position · 999,563 shares now-8,784,935
Fidelity (FMR LLC)existing position · 60,591,077 shares now-6,495,485
Millennium Management LLCexisting position · 1,347,669 shares now-5,787,243
Renaissance Technologies LLCexisting position · 788,376 shares now-5,772,200
Holocene Advisors LPexisting position · 1,047,065 shares now-5,534,783

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (5)

Exited (4)

Schonfeld Strategic Advisors LLCwas $40m
Rokos Capital Management LLPwas $39m
Winton Group Ltdwas $5.3m
ExodusPoint Capital Management LPwas $3.1m

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

33 in Q3 2024 to 29 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

CMCSA by quarter
Quarter	Holders	Reported value	Buyers	Sellers
Q2 2013	28	$20.3bn	n.a.	n.a.
Q3 2013	30	$21.3bn	n.a.	n.a.
Q4 2013	34	$23.7bn	n.a.	n.a.
Q1 2014	35	$24.3bn	n.a.	n.a.
Q2 2014	36	$27.5bn	n.a.	n.a.
Q3 2014	32	$27.0bn	n.a.	n.a.
Q4 2014	34	$26.1bn	n.a.	n.a.
Q1 2015	31	$24.8bn	n.a.	n.a.
Q2 2015	34	$26.5bn	n.a.	n.a.
Q3 2015	36	$26.4bn	n.a.	n.a.
Q4 2015	35	$29.0bn	n.a.	n.a.
Q1 2016	33	$30.7bn	n.a.	n.a.
Q2 2016	34	$32.7bn	n.a.	n.a.
Q3 2016	33	$33.5bn	n.a.	n.a.
Q4 2016	38	$34.0bn	n.a.	n.a.
Q1 2017	40	$38.8bn	n.a.	n.a.
Q2 2017	40	$40.1bn	n.a.	n.a.
Q3 2017	39	$40.5bn	n.a.	n.a.
Q4 2017	39	$41.1bn	n.a.	n.a.
Q1 2018	36	$33.7bn	n.a.	n.a.
Q2 2018	39	$32.8bn	n.a.	n.a.
Q3 2018	39	$32.2bn	n.a.	n.a.
Q4 2018	38	$30.5bn	n.a.	n.a.
Q1 2019	36	$35.3bn	n.a.	n.a.
Q2 2019	42	$37.0bn	n.a.	n.a.
Q3 2019	35	$38.7bn	n.a.	n.a.
Q4 2019	36	$36.1bn	n.a.	n.a.
Q1 2020	36	$27.7bn	n.a.	n.a.
Q2 2020	33	$33.2bn	n.a.	n.a.
Q3 2020	32	$40.8bn	n.a.	n.a.
Q4 2020	35	$45.9bn	n.a.	n.a.
Q1 2021	38	$49.8bn	n.a.	n.a.
Q2 2021	34	$52.9bn	n.a.	n.a.
Q3 2021	33	$51.4bn	n.a.	n.a.
Q4 2021	37	$45.2bn	n.a.	n.a.
Q1 2022	38	$40.3bn	n.a.	n.a.
Q2 2022	39	$32.1bn	n.a.	n.a.
Q3 2022	37	$22.8bn	n.a.	n.a.
Q4 2022	28	$25.4bn	n.a.	n.a.
Q1 2023	26	$28.7bn	n.a.	n.a.
Q2 2023	25	$29.4bn	n.a.	n.a.
Q3 2023	32	$30.6bn	n.a.	n.a.
Q4 2023	25	$28.6bn	13	12
Q1 2024	26	$26.8bn	12	14
Q2 2024	28	$24.1bn	18	12
Q3 2024	33	$27.0bn	22	10
Q4 2024	29	$24.1bn	15	17
Q1 2025	33	$24.1bn	25	8
Q2 2025	34	$22.3bn	18	17
Q3 2025	34	$18.9bn	19	14
Q4 2025	33	$20.0bn	23	26
Q1 2026	28	$20.1bn	17	29
Q2 2026	29	$16.2bn	23	24

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

CMCSA and NFLX →CMCSA and TMUS →CMCSA and SPOT →Choose a stock to compare with CMCSA →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own CMCSA, latest filings →Back to the 13F Explorer →

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