Comcast CMCSA
$24.39 −$0.56 (-2.24%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $24.29 -0.41%
Open$24.21
Prev close$24.95
Day range$24.09 – $24.77
Volume26.42M
Market cap$86.61B
P/E (TTM)7.7
Dividend yield5.41%
Ownership & positioning
Who holds it, who is betting against it, and where the big money is moving
Institutional ownership90.2%-0.13 pts vs. prior quarter
Institutions holding2,195-25 vs. prior quarter
Insider trades (recent)32 buys / 18 sellsNet buying
Short interest2.18% of floatDays to cover 2.8 · as of 15 Oct 2026
Short-sale volume share22.4%5-day average of daily volume
Short-sale volume as % of daily volume
Large-order net flow, last 20 sessions
Net of large-order buying minus selling, in USD. Over this window: +$48.82M (9 inflow days, 11 outflow days).
Net flow by order size, last 20 sessions
Super/Big orders approximate institutional-size trades; Mid/Small approximate retail-size trades. Net buy minus sell value in each bucket, summed over the window.
The five largest holders on file together own 31.6% of shares outstanding.
Largest holders
By investor type
Reported short interest has risen from 2.05% to 2.18% of float over the last 6 biweekly reports (31 Jul 2026 to 15 Oct 2026).
Recent institutional activity
| Holder | Type | Period | Share change | New stake |
|---|---|---|---|---|
| Arrowstreet Capital, Limited Partnership | Mutual Fund | 2026/Q3 | +39,936,908 | 1.5% |
| State Street Global Advisors | Mutual Fund | 2026/Q3 | +12,324,336 | 5.5% |
| Charles Schwab Investment Management | Mutual Fund | 2026/Q3 | +11,536,428 | 3.8% |
| Invesco Capital Management LLC | Mutual Fund | 2026/Q3 | +8,742,085 | 3.3% |
| GoldenTree Asset Management LP | Hedge Fund | 2026/Q3 | +6,376,908 | 0.4% |
| Two Sigma Investments, LP | Hedge Fund | 2026/Q3 | +4,899,902 | 0.1% |
| Sparinvest SA (Luxembourg) | Mutual Fund | 2026/Q3 | +4,872,698 | 0.2% |
| Boston Partners Global Investors, Inc. | Mutual Fund | 2026/Q3 | +4,773,121 | 0.2% |
| Pacer Advisors, Inc. | Mutual Fund | 2026/Q3 | +4,305,342 | 0.5% |
| Morgan Stanley | Public Company | 2026/Q3 | +3,985,951 | 0.7% |
| Citigroup Inc. | Public Company | 2026/Q3 | +3,659,053 | 0.3% |
| Numeric Investors LLC | Hedge Fund | 2026/Q3 | +3,580,930 | 0.1% |
| Canada Pension Plan Investment Board | Government Pension Fund | 2026/Q3 | +3,496,920 | 0.3% |
| Citadel Advisors LLC | Hedge Fund | 2026/Q3 | +3,353,116 | 0.1% |
| Vanguard Portfolio Management, LLC | Mutual Fund | 2026/Q3 | +3,326,800 | 2.3% |
Institutional buy/sell activity by reporting period, largest moves first.
Insider transactions
| Date | Insider | Title | Transaction | Shares | Price | Held after |
|---|---|---|---|---|---|---|
| 29 Sep 2026 | Edward Breen | Lead Independent Director | Other Acquisition | +920 | – | 28,257 |
| 29 Sep 2026 | Gordon Smith | Independent Director | Other Acquisition | +1,552 | – | 12,221 |
| 29 Sep 2026 | Jeffrey Honickman | Independent Director | Other Acquisition | +2,011 | – | 177,344 |
| 29 Sep 2026 | Louise Brady | Independent Director | Other Acquisition | +1,552 | – | 36,810 |
| 29 Sep 2026 | Thomas Baltimore | Independent Director | Other Acquisition | +1,552 | – | 43,379 |
| 31 Aug 2026 | Michael Cavanagh | Co-Chief Executive Officer | Derivative Disposition Under Emp | -565,642 | – | – |
| 31 Aug 2026 | Michael Cavanagh | Co-Chief Executive Officer | Derivative Disposition Under Emp | -392,769 | – | – |
| 16 Aug 2026 | Edward Breen | Lead Independent Director | Other Disposition | -62,440 | – | 27,337 |
| 4 Aug 2026 | Brian Roberts | Chairperson & Co-CEO | Other Disposition | -204,100 | – | 22,886,141 |
| 29 Jun 2026 | Edward Breen | Lead Independent Director | Other Acquisition | +815 | – | 89,777 |
| 29 Jun 2026 | Gordon Smith | Independent Director | Other Acquisition | +1,375 | – | 10,522 |
| 29 Jun 2026 | Jeffrey Honickman | Independent Director | Other Acquisition | +1,783 | – | 170,501 |
| 29 Jun 2026 | Louise Brady | Independent Director | Other Acquisition | +1,375 | – | 34,770 |
| 29 Jun 2026 | Thomas Baltimore | Independent Director | Other Acquisition | +1,375 | – | 41,257 |
| 18 May 2026 | Brian Roberts | Chairperson & Co-CEO | Other Disposition | -202,500 | – | 23,090,241 |
| 10 May 2026 | Edward Breen | Lead Independent Director | Other Acquisition | +32,440 | – | 88,962 |
| 2 Apr 2026 | Daniel Murdock | Executive VP, Chief Accounting Officer & Controller | Derivative Exercise and Sale | -2,073 | $27.93 | 62,362 |
| 2 Apr 2026 | Daniel Murdock | Executive VP, Chief Accounting Officer & Controller | Derivative Exercise and Retained | +3,195 | – | 62,362 |
| 30 Mar 2026 | Edward Breen | Lead Independent Director | Other Acquisition | +697 | – | 56,522 |
| 30 Mar 2026 | Gordon Smith | Independent Director | Other Acquisition | +1,176 | – | 9,045 |
From Form 4/Form 144 filings. Negative share counts are disposals (sales, gifts, or shares withheld for taxes); positive are acquisitions.
Short interest, by report
| Report date | Shares short | % of float | Days to cover |
|---|---|---|---|
| 15 Oct 2026 | 77,493,803 | 2.2% | 2.8 |
| 30 Sep 2026 | 69,389,724 | 2.0% | 1.9 |
| 15 Sep 2026 | 79,928,949 | 2.3% | 3.1 |
| 31 Aug 2026 | 82,965,352 | 2.3% | 4.1 |
| 14 Aug 2026 | 75,479,151 | 2.1% | 3.1 |
| 31 Jul 2026 | 72,592,374 | 2.0% | 2.0 |
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