Capital World Investors discloses 3% Comcast stake

Capital World Investors, a division of Capital Research and Management Company and its investment management affiliates, reports beneficial ownership of Comcast Corp. common stock.

Rhea-AI Filing Summary

Capital World Investors, a division of Capital Research and Management Company and its investment management affiliates, reports beneficial ownership of Comcast Corp. common stock. The group is deemed to beneficially own 106,085,214 shares, representing 3.0% of the class, based on 3,562,784,182 shares believed outstanding.

The filer reports sole voting power over 103,914,506 shares and sole dispositive power over 106,085,214 shares, with no shared voting or dispositive power. The filing states ownership of 5 percent or less of the class, reflecting its status below the 5% reporting threshold under the beneficial ownership rules.

Key Figures

Beneficial ownership: 106,085,214 shares Percent of class: 3.0% Shares outstanding baseline: 3,562,784,182 shares +2 more

5 metrics

Beneficial ownership 106,085,214 shares Shares of Comcast Corp. common stock deemed beneficially owned by Capital World Investors

Percent of class 3.0% Portion of Comcast common stock class beneficially owned by Capital World Investors

Shares outstanding baseline 3,562,784,182 shares Comcast common shares believed to be outstanding used to calculate ownership percentage

Sole voting power 103,914,506 shares Comcast shares over which Capital World Investors has sole voting power

Sole dispositive power 106,085,214 shares Comcast shares over which Capital World Investors has sole dispositive power

Key Terms

beneficial owner, sole voting power, sole dispositive power, percent of class, +1 more

5 terms

beneficial owner financial

"CWI is deemed to be the beneficial owner of 106,085,214 shares or 3.0%"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

sole voting power financial

"Sole power to vote or to direct the vote: 103,914,506"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole power to dispose or to direct the disposition of: 106,085,214"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

percent of class financial

"Percent of class: 3.0 %"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

Schedule 13G regulatory

"Ownership of 5 percent or less of a class "

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What percentage of Comcast (CCZ) does Capital World Investors report owning?

Capital World Investors reports beneficial ownership of 3.0% of Comcast’s common stock. This represents 106,085,214 shares out of 3,562,784,182 shares believed to be outstanding, as disclosed in the Schedule 13G/A amendment.

How many Comcast (CCZ) shares does Capital World Investors have voting power over?

Capital World Investors reports sole voting power over 103,914,506 Comcast shares. It discloses no shared voting power, indicating that voting authority for these shares is held on a sole basis by the reporting group.

What is the total Comcast (CCZ) share count used to calculate Capital World Investors’ stake?

The reported 3.0% stake is based on 3,562,784,182 Comcast common shares believed to be outstanding. Capital World Investors is deemed to beneficially own 106,085,214 shares relative to this total share count.

Does Capital World Investors still own 5% or more of Comcast (CCZ)?

No. The filing states ownership of 5 percent or less of the class. Capital World Investors’ reported beneficial ownership is 3.0%, indicating a position below the 5% beneficial ownership threshold.

Who signed the Comcast (CCZ) Schedule 13G/A for Capital World Investors?

The amendment is signed by Timothy J. Moon, identified as Vice President and Senior Counsel, Capital Research and Management Company. The signature date reported is 08/11/2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/12/2026 - 05:42 PM Accepted by SEC EDGAR 08/12/2026 - 05:40 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Comcast Corp.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

20030N101

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 20030N101

1

Names of Reporting Persons

Capital World Investors

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 103,914,506.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 106,085,214.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

106,085,214.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

3.0 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Comcast Corp.
(b)	Address of issuer's principal executive offices: One Comcast Center, Philadelphia, PA 19103-2838
Item 2.
(a)	Name of person filing: Capital World Investors
(b)	Address or principal business office or, if none, residence: 333 SOUTH HOPE STREET, 55TH FLOOR, LOS ANGELES, CALIFORNIA 90071
(c)	Citizenship: N/A
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 20030N101
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 106,085,214 ** **Capital World Investors ("CWI") is a division of Capital Research and Management Company ("CRMC"), as well as its investment management subsidiaries and affiliates Capital Bank and Trust Company, Capital International, Inc., Capital International Limited, Capital International Sarl, Capital International K.K., Capital Group Private Client Services, Inc., and Capital Group Investment Management Private Limited (together with CRMC, the "investment management entities"). CWI's divisions of each of the investment management entities collectively provide investment management services under the name "Capital World Investors." CWI is deemed to be the beneficial owner of 106,085,214 shares or 3.0% of the 3,562,784,182 shares believed to be outstanding.
(b)	Percent of class: 3.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 103,914,506
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 106,085,214
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Capital World Investors

Signature:	Timothy J. Moon
Name/Title:	Vice President and Senior Counsel, Capital Research and Management Company
Date:	08/11/2026