$CMCSA
Comcast Corp
XNAS•Communication Services•Cable & Other Pay Television Services
Why is CMCSA down today? It is at $26.29 (-1.12%), and our scanner flagged it 133 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment CMCSA spikes, and full due diligence on CMCSA — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $26.29
- Change today
- -1.12%
- Previous close
- $26.59
- 52-week range
- $21.28 – $34.45
- Market cap
- $109.01B
- Total held
- 0.98%
- Tradeable float
- 4.09B 99% of shares · after <1% insiders + institutional n/a
- Short interest
- 72.6M ▼ -15% vs prior · as of 2026-07-31
- Short % of float
- 1.8%
- Days to cover
- 2.0d
- Avg daily volume
- 32.7M
- Sector
- Communication Services
- Industry
- Cable & Other Pay Television Services
- Exchange
- XNAS
- 5mthin
- 0.2x
- 15mthin
- 0.5x
- 1hthin
- 0.8x
- 1D
- 0.4x
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Why is $CMCSA down today?
Here is the latest on CMCSA from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for CMCSA today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Analyst data via Nasdaq. Not investment advice.
From the trading subreddits (WallStreetBets, r/stocks and more). Retail chatter, not a signal. Do your own research.
Insiders
Insiders buying5 buys, 2 sells last 3 months (32/26 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Breen Edward D Director | Sold (automatic/other) | -62K | sold 70% | 27K | n/a | Aug 17, 26 |
Roberts Brian L Officer | Sold (automatic/other) | -204K | sold 3.6% | 5.49M | n/a | Aug 5, 26 |
Baltimore Thomas J Jr Director | Acquired (grant/award) | +1K | added 3.4% | 41K | n/a | Jun 30, 26 |
Brady Louise F. Director | Acquired (grant/award) | +1K | added 4.1% | 35K | n/a | Jun 30, 26 |
Breen Edward D Director | Acquired (grant/award) | +815 | added 0.9% | 90K | n/a | Jun 30, 26 |
Honickman Jeffrey A Director | Acquired (grant/award) | +2K | added 0.7% | 272K | n/a | Jun 30, 26 |
Smith Gordon Director | Acquired (grant/award) | +1K | added 15% | 11K | n/a | Jun 30, 26 |
Roberts Brian L Officer | Sold (automatic/other) | -203K | sold 3.4% | 5.70M | n/a | May 19, 26 |
Breen Edward D Director | Acquired (grant/award) | +32K | added 57% | 89K | n/a | May 11, 26 |
Murdock Daniel C. Officer | Sold (automatic/other) | -2K | sold 3.2% | 62K | $58K at $27.93 | Apr 3, 26 |
Murdock Daniel C. Officer | Other | 5K | added 8.9% | 64K | n/a | Apr 3, 26 |
Baltimore Thomas J Jr Director | Acquired (grant/award) | +1K | added 3.1% | 39K | n/a | Mar 31, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
Dilution watch
Recent offeringRecent priced share offering — a one-time sale that has already completed (not ongoing). If $CMCSA runs, these filings show who may be positioned to sell new or newly-registered shares into the move.
Sourced from SEC EDGAR filings (last 9 months); terms read straight from the filing text where available. Ongoing = an at-the-market (ATM) program still selling over time or a live shelf, so it can keep diluting; Completed = a one-time priced sale that already finished. A shelf (S-3) stays effective ~3 years. Form type signals dilution capacity, not an exact share count, and we can't confirm how much of a shelf or ATM remains unused. Not investment advice.
$CMCSA Sentiment
NeutralBlend of news sentiment, today’s move, and community votes. Not investment advice.
$CMCSA Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
Stocks similar to CMCSA
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CMCSA stock FAQ
Why is $CMCSA down today?
Here is the latest on CMCSA from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for CMCSA today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
What is the CMCSA stock price today?
CMCSA last traded at $26.29, down 1.12% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live CMCSA alerts?
The CMCSA Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged CMCSA 133 times in the last 30 days.
What exchange is CMCSA on?
CMCSA (Comcast Corp) trades on XNAS, with a market cap of about $109.01B in the CABLE & OTHER PAY TELEVISION SERVICES sector.
Is CMCSA good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge CMCSA for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.