Comcast Corporation (CMCSA) Ownership
CMCSA ownership summary
as of October 18, 2026- Institutions
- 91.6% of shares outstanding
- Insiders
- 0.74% of shares outstanding
- Shares outstanding
- 3.54B
- Float
- 3.51B shares available to trade
- Short interest
- 2.21% 69.4M shares short
- Days to cover
- 2.23 short interest down 13.2% vs prior month
- Institutions 91.57%
- Insiders 0.74%
- Other investors 7.69%
CMCSA top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 8.83% | 313.2M | $6.86B | −1.8M (−0.6%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 6.56% | 232.6M | $5.09B | −508,878 (−0.2%) | June 30, 2026 |
| 3 | State Street Corp | 5.50% | 195.1M | $4.27B | +12.3M (+6.7%) | June 30, 2026 |
| 4 | Charles Schwab Investment Management Inc | 3.75% | 133.1M | $2.91B | +11.5M (+9.5%) | June 30, 2026 |
| 5 | Amvescap Plc. | 3.53% | 125.1M | $2.74B | +5.3M (+4.4%) | June 30, 2026 |
| 6 | Capital Research Global Investors | 3.27% | 116.1M | $2.54B | +26.5M (+29.6%) | June 30, 2026 |
| 7 | Dodge & Cox | 3.27% | 115.9M | $2.54B | +2.8M (+2.5%) | June 30, 2026 |
| 8 | Capital World Investors | 2.95% | 104.6M | $2.29B | −77.5M (−42.6%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.52% | 89.5M | $1.96B | +1.4M (+1.6%) | June 30, 2026 |
| 10 | Vanguard Portfolio Management, LLC | 2.26% | 80.0M | $1.75B | +3.3M (+4.3%) | June 30, 2026 |
| 11 | NORGES BANK | 2.16% | 76.5M | $1.68B | −7.1M (−8.4%) | June 30, 2026 |
| 12 | Arnhold & S. Bleichroeder Advisers, LLC | 2.15% | 76.3M | $1.67B | +38.6M (+102.1%) | June 30, 2026 |
| 13 | Arrowstreet Capital Limited Partnership | 1.47% | 52.3M | $1.15B | +39.9M (+322.9%) | June 30, 2026 |
| 14 | FMR Inc | 1.43% | 50.8M | $1.11B | −9.8M (−16.1%) | June 30, 2026 |
| 15 | Morgan Stanley - Brokerage Accounts | 1.22% | 43.3M | $949.0M | +390,178 (+0.9%) | June 30, 2026 |
| 16 | JPMorgan Chase & Co | 1.04% | 37.0M | $809.8M | −26.3M (−41.5%) | June 30, 2026 |
| 17 | The Goldman Sachs Group Inc | 1.02% | 36.2M | $793.7M | −2.5M (−6.5%) | June 30, 2026 |
| 18 | Northern Trust Corp | 1.02% | 36.1M | $789.5M | −308,070 (−0.8%) | June 30, 2026 |
| 19 | Bank of America Corp | 0.91% | 32.3M | $707.8M | −8.5M (−20.9%) | June 30, 2026 |
| 20 | Ameriprise Financial Inc | 0.90% | 31.9M | $698.8M | −10.5M (−24.8%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 10 holders added 142.2M shares and 10 cut 144.8M.
CMCSA top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 3.19% | 113.2M | $2.48B | −216,810 (−0.2%) | August 31, 2026 |
| 2 | Schwab US Dividend Equity ETF™ | 2.77% | 98.4M | $2.16B | +273,056 (+0.3%) | September 30, 2026 |
| 3 | Vanguard 500 Index Investor | 2.67% | 94.6M | $2.07B | +1.1M (+1.2%) | August 31, 2026 |
| 4 | Dodge & Cox Stock I | 2.13% | 75.4M | $1.65B | — | June 30, 2026 |
| 5 | Invesco QQQ Trust | 2.08% | 73.9M | $1.62B | −120,538 (−0.2%) | September 30, 2026 |
| 6 | American Funds Invmt Co of Amer A | 1.44% | 51.2M | $1.12B | +11.7M (+29.7%) | June 30, 2026 |
| 7 | iShares Core S&P 500 ETF | 1.33% | 47.2M | $1.03B | −75,924 (−0.2%) | September 30, 2026 |
| 8 | Fidelity 500 Index | 1.30% | 46.2M | $1.01B | +177,644 (+0.4%) | August 31, 2026 |
| 9 | American Funds Washington Mutual A | 1.29% | 45.9M | $1.01B | −16.1M (−25.9%) | June 30, 2026 |
| 10 | State Street® SPDR® S&P 500® ETF | 1.22% | 43.4M | $949.5M | — | September 30, 2026 |
| 11 | Capital Group Dividend Value ETF | 1.17% | 41.6M | $911.7M | +42,320 (+0.1%) | September 30, 2026 |
| 12 | State Street® CommServSelSectSPDR®ETF | 1.15% | 40.9M | $894.7M | −151,230 (−0.4%) | September 30, 2026 |
| 13 | Vanguard MStar Value Index Investor | 0.96% | 34.1M | $746.0M | +130,127 (+0.4%) | August 31, 2026 |
| 14 | American Funds Income Fd of Amer A | 0.73% | 25.8M | $565.2M | −31.7M (−55.1%) | June 30, 2026 |
| 15 | First Eagle Global A | 0.70% | 25.0M | $547.0M | — | August 31, 2026 |
| 16 | Vanguard Windsor II Inv | 0.55% | 19.5M | $427.7M | −3.9M (−16.7%) | June 30, 2026 |
| 17 | American Funds American Balanced A | 0.55% | 19.4M | $424.1M | −22.9M (−54.2%) | June 30, 2026 |
| 18 | Vanguard Institutional Index I | 0.54% | 19.0M | $417.1M | −190,094 (−1.0%) | August 31, 2026 |
| 19 | Invesco NASDAQ 100 ETF | 0.46% | 16.3M | $356.3M | +37,884 (+0.2%) | September 30, 2026 |
| 20 | Pacer US Cash Cows 100 ETF | 0.42% | 14.9M | $326.9M | −2,680 (−0.0%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
CMCSA insider transactions
latest 4| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-17 | Kevin Hern | Sell | $30.08 | — | — |
| 2026-02-26 | Michael T. McCaul | Sell | $30.86 | — | — |
| 2026-02-17 | Ro Khanna | Sell | $31.55 | — | — |
| 2026-02-11 | Michael J Cavanagh | Sell | $32.66 | 57,947 | $1.9M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
CMCSA shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns CMCSA
Institutional investors own 91.6% of Comcast's shares and insiders 0.74%. The largest holder is BlackRock Inc with 8.83% of the shares (313.2M), as of June 30, 2026. Among the top 20 institutions, 10 added shares and 10 reduced their stake in the latest filings. Short interest is 2.21% of the float, or 2.23 days of average trading volume. The share count fell 29.8% since 2014.
Related: CMCSA analyst forecast, CMCSA key metrics, CMCSA dividend history. See the CMCSA stock overview for the latest quote and news.
CMCSA ownership FAQ
Who owns the most Comcast stock?
The largest shareholders of Comcast are BlackRock Inc (8.83%), Vanguard Capital Management, LLC (6.56%), State Street Corp (5.50%), Charles Schwab Investment Management Inc (3.75%), Amvescap Plc. (3.53%).
What percentage of Comcast is owned by institutions?
Institutions hold 91.6% of Comcast's shares outstanding; insiders hold 0.74%.
Which funds own Comcast?
The largest fund holders of Comcast are Vanguard MStar Total Stk Mkt Idx Invest (3.19%), Schwab US Dividend Equity ETF™ (2.77%), Vanguard 500 Index Investor (2.67%), Dodge & Cox Stock I (2.13%), Invesco QQQ Trust (2.08%).
What is Comcast's short interest?
69.4M shares of Comcast were sold short, 2.21% of the float; at the average daily volume it would take 2.23 days to cover.
Are insiders buying or selling Comcast?
Of the latest 4 reported insider transactions in Comcast (since February 11, 2026), 0 were purchases and 4 were sales.
How many shares of Comcast are outstanding?
Comcast has 3.54B shares outstanding, of which 3.51B are in the public float.