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CMCSA Institutional Ownership & 13F Holders | SmartMoneyDB

CMCSACOMCAST CORP NEW

CL A · CUSIP 20030N101

Smart Money Ownership

Of the 23 tracked institutions holding CMCSA, 15 have a 3-year clone track record — 9 of them beat the S&P. Average holder's clone alpha: +1.6pt. It's a gauge of who owns the name, not just how many.

CMCSA (COMCAST CORP NEW) Institutional Ownership Summary

Among the 23 tracked institutional investors we monitor, CMCSA (COMCAST CORP NEW) is held with a combined value of $31.48B across 1,081,257,319 shares. The largest holder is VANGUARD GROUP INC with a position worth $11.04B (0.16% of their portfolio). 6 funds increased their holdings. 15 funds reduced their position.

Total Institutional Value

$31.48B

Total Shares Held

1,081,257,319

Institutional Holders

Days to Cover

2.6-3.3%

85.09M shares short · FINRA 2026-07-15

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

Capital Research Global Investors+61% shares~$973.4M VANGUARD GROUP INC+1% shares~$65.8M AQR CAPITAL MANAGEMENT LLC+15% shares~$45.0M Grantham, Mayo, Van Otterloo & Co. LLC+4% shares~$1.8M WELLINGTON MANAGEMENT GROUP LLP+2% shares~$1.2M

13F Institutional Holders

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Capital Research Global Investors

HARRIS ASSOCIATES L P

1.01% of book-3.7%

$759.32M

AQR CAPITAL MANAGEMENT LLC

0.16% of book+14.7%

$350.81M

PRICE T ROWE ASSOCIATES INC /MD/

0.03% of book-29.5%

$260.50M

MILLENNIUM MANAGEMENT LLC

0.03% of book-78.5%

$83.94M

ADAGE CAPITAL PARTNERS GP, L.L.C.

0.13% of book-5.4%

$83.68M

#	Fund	Value↓	Shares	Portfolio %	Change
1	VANGUARD GROUP INC	$11.04B	369,311,219	0.16%	+0.6%
2	BlackRock, Inc.	$9.04B	314,985,765	0.16%	-0.3%
3	STATE STREET CORP	$5.25B	182,735,113	0.18%	-2.2%
4	Capital Research Global Investors	$2.57B	89,574,393	0.40%	+60.9%
5	FMR LLC	$1.74B	60,591,077	0.09%	-9.7%
6	HARRIS ASSOCIATES L P	$759.32M	26,448,063	1.01%	-3.7%
7	AQR CAPITAL MANAGEMENT LLC	$350.81M	12,287,677	0.16%	+14.7%
8	PRICE T ROWE ASSOCIATES INC /MD/	$260.50M	9,073,540	0.03%	-29.5%
9	MILLENNIUM MANAGEMENT LLC	$83.94M	2,923,769	0.03%	-78.5%
10	ADAGE CAPITAL PARTNERS GP, L.L.C.	$83.68M	2,914,659	0.13%	-5.4%

Congress Trading

24 members · 52 disclosed trades in CMCSA

Member	Type	Amount	Date
Gilbert Cisneros	Buy	$1,001 - $15,000	Jun 16, 2026
Mike Kelly	Sell	$1,001 - $15,000	May 7, 2026
Gilbert Cisneros	Sell	$15,001 - $50,000	Apr 14, 2026
Alan Armstrong	Buy	$1,001 - $15,000

Frequently Asked Questions

Which institutional investors own the most CMCSA stock?

As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of CMCSA with a position worth $11.04B, representing 0.16% of their portfolio. In total, 23 institutional investors hold CMCSA with a combined value of $31.48B.

What percentage of CMCSA is owned by institutional investors?

Institutional investors hold $31.48B worth of CMCSA stock across 23 positions. The largest institutional holder is VANGUARD GROUP INC with $11.04B in holdings.

What is a 13F filing and why does it matter for CMCSA?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For CMCSA, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track CMCSA institutional moves

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