COMCAST CORP (CMCSA)
Every FINRA and SEC series the site collects for COMCAST CORP: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq, classified by the SEC as cable & other pay television services.
75.5M
Short interest
settlement 2026-08-14
3.1
Days to cover
+4.0% vs prior
53.6%
Short share of volume
2026-09-11
7,267
Fails to deliver
settlement 2026-08-14
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-09-11.
Short interest
FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSONAs of 14 August 2026, short interest in CMCSA is 75,479,151 shares, down 9,611,439 shares over the last month. Over the last 48 readings it ranged from 43,267,330 shares (13 June 2025) to 89,134,254 shares (15 June 2026). At the reported average volume of 24.3M shares a day that is 3.1 days to cover.
Embed this chartfree, with the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/cmcsa" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-08-14 | 75,479,151 | +4.0% | 24,269,491 | 3.11 |
| 2026-07-31 | 72,592,374 | -14.7% | 36,797,643 | 1.97 |
| 2026-07-15 | 85,090,590 | -3.3% | 32,598,857 | 2.61 |
| 2026-06-30 | 88,032,735 | -1.2% | 52,851,273 | 1.67 |
| 2026-06-15 | 89,134,254 | +6.3% | 29,440,995 | 3.03 |
| 2026-05-29 | 83,844,940 | -1.5% | 30,818,090 | 2.72 |
| 2026-05-15 | 85,159,958 | -1.9% | 31,674,240 | 2.69 |
| 2026-04-30 | 86,769,384 | +14.2% | 34,455,623 | 2.52 |
| 2026-04-15 | 75,956,586 | -3.9% | 22,732,587 | 3.34 |
| 2026-03-31 | 79,003,913 | +14.4% | 45,324,263 | 1.74 |
| 2026-03-13 | 69,028,994 | -10.6% | 25,703,387 | 2.69 |
| 2026-02-27 | 77,168,966 | -8.6% | 23,490,689 | 3.29 |
| 2026-02-13 | 84,443,427 | +6.5% | 31,230,528 | 2.70 |
| 2026-01-30 | 79,270,043 | +24.9% | 44,110,968 | 1.80 |
| 2026-01-15 | 63,455,401 | +3.8% | 32,586,887 | 1.95 |
| 2025-12-31 | 61,140,797 | +14.2% | 39,624,611 | 1.54 |
| 2025-12-15 | 53,525,909 | +2.0% | 36,880,707 | 1.45 |
| 2025-11-28 | 52,488,029 | -0.1% | 28,521,269 | 1.84 |
| 2025-11-14 | 52,554,069 | +6.5% | 40,000,628 | 1.31 |
| 2025-10-31 | 49,367,832 | -9.0% | 29,312,278 | 1.68 |
| 2025-10-15 | 54,229,836 | -3.5% | 24,746,992 | 2.19 |
| 2025-09-30 | 56,197,276 | +1.4% | 28,051,328 | 2.00 |
| 2025-09-15 | 55,434,200 | +12.2% | 21,475,154 | 2.58 |
| 2025-08-29 | 49,405,919 | -3.2% | 19,666,498 | 2.51 |
Daily short volume
FINRA Reg SHO, last 60 sessions. JSONAs of 11 September 2026, the short share of CMCSA volume is 53.6%, down 2.7 points over the last five sessions. Over the last 52 readings it ranged from 29.9% (27 July 2026) to 65.0% (8 September 2026). The latest reading is in line with the 30-session average of 52.3%, on 5.3M shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-09-11 | 2.8M | 5.3M | 53.6% | 7,366 |
| 2026-09-10 | 4.8M | 9.6M | 50.4% | 7,743 |
| 2026-09-09 | 9.9M | 16.4M | 60.4% | 6,241 |
| 2026-09-08 | 6.5M | 10.0M | 65.0% | 52,893 |
| 2026-09-04 | 4.5M | 7.4M | 61.3% | 7,249 |
| 2026-09-03 | 4.7M | 8.3M | 56.3% | 17,749 |
| 2026-09-02 | 4.6M | 8.7M | 53.4% | 33,560 |
| 2026-09-01 | 4.4M | 8.0M | 55.3% | 69,795 |
| 2026-08-31 | 4.0M | 8.5M | 47.2% | 5,021 |
| 2026-08-28 | 2.4M | 6.1M | 39.7% | 3,930 |
| 2026-08-27 | 3.7M | 6.9M | 53.8% | 5,983 |
| 2026-08-26 | 3.1M | 5.1M | 60.8% | 322 |
| 2026-08-25 | 4.3M | 8.3M | 52.4% | 6,908 |
| 2026-08-24 | 3.2M | 5.8M | 55.7% | 3,919 |
| 2026-08-21 | 2.1M | 4.8M | 43.4% | 5,949 |
| 2026-08-20 | 2.0M | 5.2M | 39.1% | 586 |
| 2026-08-19 | 3.6M | 7.7M | 46.2% | 2,812 |
| 2026-08-18 | 4.2M | 8.0M | 52.1% | 6,930 |
| 2026-08-17 | 3.4M | 7.5M | 45.5% | 4,898 |
| 2026-08-14 | 5.2M | 8.4M | 61.4% | 5,525 |
| 2026-08-13 | 3.2M | 7.7M | 41.2% | 12,058 |
| 2026-08-12 | 3.8M | 7.6M | 49.6% | 13,850 |
| 2026-08-11 | 5.1M | 8.5M | 59.9% | 21,733 |
| 2026-08-10 | 4.1M | 6.7M | 61.2% | 3,886 |
| 2026-08-07 | 3.7M | 6.7M | 55.5% | 10,550 |
| 2026-08-06 | 3.5M | 6.9M | 50.6% | 4,537 |
| 2026-08-05 | 5.7M | 9.6M | 59.2% | 8,430 |
| 2026-08-04 | 4.0M | 7.4M | 54.1% | 167 |
| 2026-08-03 | 6.5M | 14.9M | 43.5% | 11,219 |
| 2026-07-31 | 3.3M | 7.6M | 42.7% | 6,729 |
Fails to deliver
SEC, by settlement date. JSONAs of 14 August 2026, the fails-to-deliver balance in CMCSA is 7,267 shares, down 2,382 shares over the last settlement date. Over the last 52 readings it ranged from 17 shares (3 March 2026) to 2,270,007 shares (20 March 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-08-14 | 7,267 | $26.18 | $190K |
| 2026-08-12 | 9,649 | $25.65 | $247K |
| 2026-08-10 | 100 | $25.36 | $3K |
| 2026-08-05 | 9,328 | $24.93 | $233K |
| 2026-08-03 | 46 | $23.96 | $1K |
| 2026-07-30 | 1,397 | $24.61 | $34K |
| 2026-07-17 | 21,762 | $24.10 | $524K |
| 2026-07-13 | 4,244 | $23.57 | $100K |
| 2026-07-10 | 9,715 | $23.35 | $227K |
| 2026-07-06 | 78 | $23.79 | $2K |
| 2026-07-01 | 17,443 | $24.55 | $428K |
| 2026-06-30 | 46,754 | $24.22 | $1.1M |
| 2026-06-22 | 14,024 | $22.43 | $315K |
| 2026-06-15 | 3,358 | $24.50 | $82K |
| 2026-06-04 | 3,081 | $23.52 | $72K |
| 2026-06-03 | 21,314 | $24.85 | $530K |
| 2026-06-02 | 5,759 | $25.05 | $144K |
| 2026-04-28 | 501,813 | $27.51 | $13.8M |
| 2026-04-27 | 7,378 | $27.56 | $203K |
| 2026-04-24 | 28,187 | $31.64 | $892K |
| 2026-04-15 | 30 | $28.14 | $844 |
| 2026-04-14 | 21 | $28.05 | $589 |
| 2026-04-09 | 525 | $27.96 | $15K |
| 2026-04-08 | 60,751 | $27.79 | $1.7M |
| 2026-04-07 | 56,069 | $27.66 | $1.6M |
| 2026-04-01 | 6,253 | $28.71 | $180K |
| 2026-03-27 | 569,407 | $28.72 | $16.4M |
| 2026-03-25 | 222 | $29.22 | $6K |
| 2026-03-23 | 167,702 | $29.02 | $4.9M |
| 2026-03-20 | 2,270,007 | $28.98 | $65.8M |
Insider trades
SEC Form 4, newest first, 50 of 91 shown. JSONNo open-market insider trades were reported for CMCSA in the last 90 days. The most recent filings are listed below; grants and option exercises carry a weaker signal than voluntary trades. Latest filing: ROBERTS BRIAN L (Chairman of Board & Co-CEO) on 2026-09-02.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-09-02 | ROBERTS BRIAN L | Chairman of Board & Co-CEO | Gift | 102K | $0.00 | $0 | 5.4M |
| 2026-08-17 | BREEN EDWARD D | n/a | Gift | 62K | $0.00 | $0 | 27K |
| 2026-08-05 | ROBERTS BRIAN L | Chairman of Board & Co-CEO | Gift | 204K | $0.00 | $0 | 5.5M |
| 2026-05-19 | ROBERTS BRIAN L | Chairman of Board & Co-CEO | Gift | 203K | $0.00 | $0 | 5.7M |
| 2026-05-11 | BREEN EDWARD D | n/a | Gift | 32K | $0.00 | $0 | 89K |
| 2026-04-03 | Murdock Daniel C. | EVP & Chief Accounting Officer | Tax withholding | 2K | $27.93 | $58K | 62K |
| 2026-04-03 | Murdock Daniel C. | EVP & Chief Accounting Officer | Option exercise | 5K | $0.00 | $0 | 64K |
| 2026-03-31 | Smith Gordon | n/a | Grant | 1K | $0.00 | $0 | 9K |
| 2026-03-31 | Honickman Jeffrey A | n/a | Grant | 2K | $0.00 | $0 | 263K |
| 2026-03-31 | Brady Louise F. | n/a | Grant | 1K | $0.00 | $0 | 33K |
| 2026-03-31 | Baltimore Thomas J Jr | n/a | Grant | 1K | $0.00 | $0 | 39K |
| 2026-03-31 | BREEN EDWARD D | n/a | Grant | 697 | $0.00 | $0 | 57K |
| 2026-03-17 | Khoury Jennifer | Chief Communications Officer | Tax withholding | 11K | $30.08 | $316K | 61K |
| 2026-03-17 | Khoury Jennifer | Chief Communications Officer | Option exercise | 11K | $28.38 | $308K | 71K |
| 2026-03-17 | BREEN EDWARD D | n/a | Gift | 30K | $0.00 | $0 | 56K |
| 2026-03-05 | Armstrong Jason | CFO | Tax withholding | 69K | $31.75 | $2.2M | 99K |
| 2026-03-05 | Armstrong Jason | CFO | Sell | 4K | $31.73 | $143K | 168K |
| 2026-03-05 | Armstrong Jason | CFO | Option exercise | 73K | $28.38 | $2.1M | 172K |
| 2026-03-01 | ROBERTS BRIAN L | Chairman of Board & Co-CEO | Tax withholding | 46K | $30.96 | $1.4M | 5.9M |
| 2026-03-01 | ROBERTS BRIAN L | Chairman of Board & Co-CEO | Option exercise | 46K | $0.00 | $0 | 5.9M |
| 2026-03-01 | Cavanagh Michael J | Co-CEO | Tax withholding | 35K | $30.96 | $1.1M | 39K |
| 2026-03-01 | Cavanagh Michael J | Co-CEO | Option exercise | 35K | $0.00 | $0 | 74K |
| 2026-03-01 | Khoury Jennifer | Chief Communications Officer | Tax withholding | 3K | $30.96 | $89K | 60K |
| 2026-03-01 | Khoury Jennifer | Chief Communications Officer | Tax withholding | 2K | $30.96 | $61K | 63K |
| 2026-03-01 | Khoury Jennifer | Chief Communications Officer | Tax withholding | 1K | $30.96 | $39K | 65K |
| 2026-03-01 | Khoury Jennifer | Chief Communications Officer | Option exercise | 3K | $0.00 | $0 | 66K |
| 2026-03-01 | Khoury Jennifer | Chief Communications Officer | Option exercise | 3K | $0.00 | $0 | 64K |
| 2026-03-01 | Khoury Jennifer | Chief Communications Officer | Option exercise | 4K | $0.00 | $0 | 61K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Tax withholding | 1K | $30.96 | $31K | 59K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Tax withholding | 944 | $30.96 | $29K | 60K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Tax withholding | 771 | $30.96 | $24K | 61K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Tax withholding | 553 | $30.96 | $17K | 62K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Option exercise | 2K | $0.00 | $0 | 62K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Option exercise | 3K | $0.00 | $0 | 60K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Option exercise | 4K | $0.00 | $0 | 57K |
| 2026-03-01 | Murdock Daniel C. | EVP & Chief Accounting Officer | Option exercise | 4K | $0.00 | $0 | 53K |
| 2026-03-01 | Reid Thomas J. | Chief Legal Officer, Secretary | Tax withholding | 49K | $30.96 | $1.5M | 175K |
| 2026-03-01 | Reid Thomas J. | Chief Legal Officer, Secretary | Option exercise | 93K | $0.00 | $0 | 223K |
| 2026-03-01 | Armstrong Jason | CFO | Tax withholding | 43K | $30.96 | $1.3M | 99K |
| 2026-03-01 | Armstrong Jason | CFO | Tax withholding | 3K | $30.96 | $83K | 142K |
| 2026-03-01 | Armstrong Jason | CFO | Tax withholding | 2K | $30.96 | $65K | 145K |
| 2026-03-01 | Armstrong Jason | CFO | Option exercise | 5K | $0.00 | $0 | 147K |
| 2026-03-01 | Armstrong Jason | CFO | Option exercise | 6K | $0.00 | $0 | 142K |
| 2026-03-01 | Armstrong Jason | CFO | Option exercise | 93K | $0.00 | $0 | 136K |
| 2026-02-11 | ROBERTS BRIAN L | Chairman of Board & Co-CEO | Tax withholding | 908K | $32.70 | $29.7M | 5.9M |
| 2026-02-11 | ROBERTS BRIAN L | Chairman of Board & Co-CEO | Option exercise | 984K | $28.38 | $27.9M | 6.8M |
| 2026-02-11 | Cavanagh Michael J | Co-CEO | Tax withholding | 384K | $32.66 | $12.5M | 239K |
| 2026-02-11 | Cavanagh Michael J | Co-CEO | Sell | 58K | $32.66 | $1.9M | 622K |
| 2026-02-11 | Cavanagh Michael J | Co-CEO | Option exercise | 442K | $28.38 | $12.5M | 680K |
| 2026-02-11 | Cavanagh Michael J | Co-CEO | Tax withholding | 294K | $32.66 | $9.6M | 39K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are the rarer, stronger signal.
13F holders
Tracked managers holding CMCSA at their latest 13F. JSON9 of the 30 tracked managers held CMCSA at their latest 13F, $991.6M in total at quarter-end prices. Citadel Advisors is the largest at $389.0M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 5 added shares and 3 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Citadel Advisors | 2026-06-30 | 15.8M | $389.0M | 0.04% | +4.4M |
| AQR Capital Management | 2026-06-30 | 7.4M | $178.8M | 0.06% | -4.9M |
| Point72 Asset Management | 2026-06-30 | 5.0M | $123.7M | 0.14% | +4.1M |
| Two Sigma Investments | 2026-06-30 | 4.9M | $120.3M | 0.09% | +4.8M |
| Millennium Management | 2026-06-30 | 4.0M | $97.8M | 0.04% | -9.6M |
| Greenlight Capital (DME Capital) | 2026-06-30 | 1.3M | $33.0M | 0.85% | new or n/a |
| D. E. Shaw & Co. | 2026-06-30 | 1.0M | $25.6M | 0.01% | +124K |
| Bridgewater Associates | 2026-06-30 | 920K | $22.6M | 0.09% | -272K |
| Fisher Asset Management | 2026-06-30 | 37K | $910K | 0.00% | +1K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 2026 (quarter ended 2026-06-30) COMCAST CORP reported revenue of $29.94B, down 1.2% from the same quarter a year earlier, and net income of $3.53B (0.99 diluted EPS). In FY 2025 it generated $33.64B of operating cash flow and spent $7.16B on buybacks and $4.89B on dividends. As of 2026-06-30, cash was $7.66B against $6.12B of debt.
- Cash
- $7.66B
- Debt
- $6.12B
- Equity
- $89.76B
- Total assets
- $257.55B
- Shares outstanding
- 2,063,073,161
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | $29.94B | $3.53B | 11.8% | 0.99 |
| Q1 2026 | 2026-03-31 | $31.46B | $2.17B | 6.9% | 0.60 |
| Q4 2025derived | 2025-12-31 | $32.31B | $2.17B | 6.7% | n/a |
| Q3 2025 | 2025-09-30 | $31.20B | $3.33B | 10.7% | 0.90 |
| Q2 2025 | 2025-06-30 | $30.31B | $11.12B | 36.7% | 2.98 |
| Q1 2025 | 2025-03-31 | $29.89B | $3.38B | 11.3% | 0.89 |
| Q4 2024derived | 2024-12-31 | $31.91B | $4.78B | 15.0% | n/a |
| Q3 2024 | 2024-09-30 | $32.07B | $3.63B | 11.3% | 0.94 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $123.71B | $20.00B | $33.64B | $11.75B | $7.16B | $4.89B |
| FY 2024 | 2024-12-31 | $123.73B | $16.19B | $27.67B | $12.18B | $9.10B | $4.81B |
| FY 2023 | 2023-12-31 | $121.57B | $15.39B | $28.50B | $12.24B | $11.29B | $4.77B |
| FY 2022 | 2022-12-31 | $121.43B | $5.37B | $26.41B | $10.63B | $13.33B | $4.74B |
| FY 2021 | 2021-12-31 | $116.39B | $14.16B | $29.15B | $9.17B | $4.67B | $4.53B |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are cash paid to repurchase common stock in the year (XBRL PaymentsForRepurchaseOfCommonStock), not authorizations. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2009-12-31 from the cover page.
What this page is
COMCAST CORP in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.
This page follows COMCAST CORP (CMCSA), SEC CIK 1166691, listed on Nasdaq, classified by the SEC as cable & other pay television services. The cross-market tables live on the short interest and insider transactions hubs.
Source and method
- Short interest
- FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-14.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-11.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC XBRL company factsRefreshed weekly from the SEC's structured data; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Insider trades
- SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-09-02.JSON and CSV
- Company record
- EDGAR filing index for CIK 1166691Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 30 requests a minute without a key, 120 a minute with a key from a free account.
Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 13 Sep 09:50 UTC.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as cable & other pay television services
- ROKUROKU, INC
- WBDWarner Bros. Discovery, Inc.
- LILALiberty Latin America Ltd.
- GLIBKLiberty Capital Corp/NV
- CCZCOMCAST CORP
- GLIBALiberty Capital Corp/NV
- LILABLiberty Latin America Ltd.
- LILAKLiberty Latin America Ltd.
- LILAPLiberty Latin America Ltd.
- CRWVCoreWeave, Inc.
- UTHRUNITED THERAPEUTICS Corp
- TEAMAtlassian Corp
- CVNACARVANA CO.
- CRWDCrowdStrike Holdings, Inc.
- RCGRENN Fund, Inc.
- APPAppLovin Corp
- SESea Ltd
- VICRVICOR CORP
- GOOGLAlphabet Inc.
- ANETArista Networks, Inc.
- CRMSalesforce, Inc.
- RDDTReddit, Inc.
- CRDOCredo Technology Group Holding Ltd
- NVDANVIDIA CORP
Datasets
Frequently Asked Questions
How much of CMCSA is sold short?
What is CMCSA's daily short volume?
Does CMCSA have fails to deliver?
Are CMCSA insiders buying or selling?
What did CMCSA report last quarter?
Which funds hold CMCSA?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.