Buyback Radar
Company reports

Comcast

CMCSA

Comcast has retired 37.0% of its shares since 2010, from 5,616,000,000 to 3,539,192,198.

37.0%retired since 2010
22.8%last 5 years
4.3%last 12 months
3.5Bshares today
Shares outstanding, 2010 to todaysplit adjusted, from SEC filings
a quarter gone 20225.6B shares, 20103.5B2010201520202025
2010, 5,616,000,0002026-07-15, 3,539,192,198

Early years use the fiscal-year average share count from the 10-K.

A share bought in 2010
1.6× more of Comcast today, without buying another share. It was one of 5,616,000,000 shares then. It is one of 3,539,192,198 now.
Every filing we read16 fiscal years, split adjusted
Fiscal yearDateShares outstandingFiling
20102010-12-315,616,000,00010-Kfiscal-year average
20112011-12-315,492,000,00010-Kfiscal-year average
20122012-12-315,356,000,00010-Kfiscal-year average
20132013-12-315,250,000,00010-Kfiscal-year average
20142014-12-315,166,000,00010-Kfiscal-year average
20152015-12-314,972,000,00010-Kfiscal-year average
20162016-12-314,819,000,00010-Kfiscal-year average
20172017-12-314,708,000,00010-Kfiscal-year average
20182018-12-314,584,000,00010-Kfiscal-year average
20192019-12-314,548,000,00010-Kfiscal-year average
20202020-12-314,574,000,00010-Kfiscal-year average
20212021-12-314,584,000,00010-Kfiscal-year average
20222022-12-314,406,000,00010-Kfiscal-year average
20232023-12-314,122,000,00010-Kfiscal-year average
20242024-12-313,885,000,00010-Kfiscal-year average
20252025-12-313,699,000,00010-Kfiscal-year average

Source: all 10-K filings of Comcast on EDGAR. Download this series as CSV. Licence CC BY 4.0, credit Buyback Radar.

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Comcast buybacks, answered

Is Comcast buying back its stock?

Yes. Comcast has 4.3% fewer shares outstanding than twelve months ago, 3,539,192,198 as of July 15, 2026. Over five years the share count is down 22.8%.

How many shares has Comcast bought back?

Net of every new share it issued, Comcast has 2.08 billion fewer shares than at its 2010 peak. That is 37.0% of the company.

How many shares does Comcast have outstanding?

3,539,192,198 shares, as of July 15, 2026, from the cover page of its latest 10-Q. At the 2010 peak it had 5,616,000,000.

What do Comcast's buybacks mean for a shareholder?

Each share is a bigger slice of the company. Someone who held Comcast stock in 2010 owns 1.6 times as much of the business today without buying another share. Whether that was a good use of cash depends on the price paid.

How does Comcast compare with other cannibal stocks?

Comcast ranks No. 134 of 251 companies on Buyback Radar by share of the company retired since its peak. Close to it on the list: Jefferies (37.4%), Copart (37.3%), ADP (37.0%), Columbia Sportswear (36.5%).

Every answer is computed from Comcast's own SEC filings and rebuilt every Monday. Latest count: 10-Q on EDGAR.

Superinvestors who own it

Bill NygrenHarris Associates7,173,464 shares, $176.1M, Q2 2026
First EagleFirst Eagle Investment Management76,345,970 shares, $1.9B, Q2 2026
Tom GaynerMarkel Group802,074 shares, $19.7M, Q2 2026
David KatzMatrix Asset Advisors1,017,294 shares, $22.1M, Q3 2026
Donald YacktmanYacktman Asset Management1,170,500 shares, $28.7M, Q2 2026
Tweedy BrowneTweedy, Browne31,330 shares, $769K, Q2 2026
Steven RomickFirst Pacific Advisors8,676,664 shares, $213.0M, Q2 2026
Glenn GreenbergBrave Warrior Advisors31,094 shares, $763K, Q2 2026
Tom RussoGardner Russo & Quinn2,193,660 shares, $53.9M, Q2 2026
Wally WeitzWeitz Investment Management47,000 shares, $1.2M, Q2 2026
David EinhornDME Capital Management1,345,780 shares, $33.0M, Q2 2026

From the latest 13F filings. All superinvestors.

Insider buying, last 12 months

No open-market purchases reported in the last 12 months.

The story

The numbers say what happened. The story says whether it can continue. We cover companies like Comcast in depth on Cannibal Stocks.

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