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: 30 Jun 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 31 Jul 2026
Managers listing it: 43; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q1 2026 and Q2 2026; 25 listed it in both
Shares listed: 682,174,970; combined, among listed positions
Reported value: $16.8bn; 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: 23 buyers (opened or added shares) and 24 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -27,468,714.

Managers listing CMCSA in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, 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
Invesco Ltd	125,126,243	$3.1bn	0.24%	Added	+5,324,337	14 Aug 2026 (the filing on sec.gov)
Capital Research Global Investors	116,113,743	$2.9bn	0.40%	Added	+26,539,350	12 Aug 2026 (the filing on sec.gov)
Dodge & Cox	115,903,125	$2.8bn	1.49%	Added	+2,794,881	13 Aug 2026 (the filing on sec.gov)
Capital World Investors	104,629,299	$2.6bn	0.30%	Trimmed	-77,512,480	12 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP	52,306,272	$1.3bn	0.57%	Added	+39,936,908	13 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)	50,806,417	$1.2bn	0.05%	Trimmed	-9,784,660	13 Aug 2026 (the filing on sec.gov)
First Eagle Investment Management LLC	38,172,985	$937m	1.54%	Added	+392,348	5 Aug 2026 (the filing on sec.gov)
MFS Investment Management	9,967,520	$249m	0.08%	Trimmed	-518,768	3 Aug 2026 (the filing on sec.gov)
Man Group PLC	7,300,157	$179m	0.29%	Added	+4,672,773	14 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC	7,350,709	$179m	0.06%	Trimmed	-4,936,968	14 Aug 2026 (the filing on sec.gov)
Harris Associates LP	7,173,464	$176m	0.23%	Trimmed	-19,274,599	14 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	5,249,306	$129m	under 0.1%	Trimmed	-3,824,234	14 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC	5,247,259	$129m	under 0.1%	Added	+3,353,116	2 Sep 2026 (the filing on sec.gov)
AllianceBernstein LP	4,324,815	$124m	under 0.1%	Trimmed	-684,704	14 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP	4,899,902	$120m	0.09%	New	new	14 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP	4,263,280	$105m	under 0.1%	Added	+1,927,166	14 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP	2,678,831	$66m	0.07%	Added	+2,670,831	14 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC	2,494,773	$61m	0.07%	Added	+1,495,210	13 Aug 2026 (the filing on sec.gov)
Davidson Kempner Capital Management LP	2,188,388	$54m	0.64%	Added	+1,036,795	14 Aug 2026 (the filing on sec.gov)
Millennium Management LLC	1,903,810	$47m	under 0.1%	Added	+556,141	14 Aug 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC	1,879,973	$46m	0.17%	New	new	14 Aug 2026 (the filing on sec.gov)
Wellington Management Group LLP	1,722,450	$42m	under 0.1%	Trimmed	-329,923	14 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC	1,664,267	$41m	0.05%	Added	+1,610,707	14 Aug 2026 (the filing on sec.gov)
Greenlight Capital	1,345,780	$33m	0.85%	New	new	14 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	1,043,614	$26m	under 0.1%	Trimmed	-2,767,815	27 Oct 2026 (the filing on sec.gov)

Page 1 of 2

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Arrowstreet Capital LPexisting position · 52,306,272 shares now+39,936,908
Capital Research Global Investorsexisting position · 116,113,743 shares now+26,539,350
Invesco Ltdexisting position · 125,126,243 shares now+5,324,337
Two Sigma Investments LPnew position · 4,899,902 shares now+4,899,902
Man Group PLCexisting position · 7,300,157 shares now+4,672,773

Reductions

Capital World Investorsexisting position · 104,629,299 shares now-77,512,480
Harris Associates LPexisting position · 7,173,464 shares now-19,274,599
Fidelity (FMR LLC)existing position · 50,806,417 shares now-9,784,660
AQR Capital Management LLCexisting position · 7,350,709 shares now-4,936,968
Artisan Partners LPexisting position · 363,105 shares now-4,112,701

New positions and exits

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

New (4)

Exited (4)

Voloridge Investment Management LLCwas $47m
Holocene Advisors LPwas $30m
Renaissance Technologies LLCwas $23m
Soros Fund Management LLCwas $413k

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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