Comcast Corp-class A
+$1.3B
Net Activity
Data as of: 2026-03-31
Institutions Holding
2048
Popularity Rank
#128
Avg Weight
0.24%
Total Value
$90.0B
2048 institutions currently hold CMCSA, with 1035 net buyers and 965 net sellers this quarter.
Institutional Moves (Q1 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
965
Net Buying Institutions
1035
Top 5 by Value
Across its top 20 institutional holders, CMCSA's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 20/100).
+$41.8B
Total Buy Value
$48.3B
Total Sell Value
1035
Net Buyers
965
Net Sellers
Institutional accumulation signals positive bias
Signal Basis
Institutional investors added a net $1.34B to CMCSA positions in the latest quarter, with 1,035 buyers vs. 965 sellers. Insider activity is minimal: only $2.28M in total sales over 90 days and zero purchases, a negligible offset to the strong institutional inflow.
Confirmation
Continued institutional buying or any insider purchases would further support this bullish view.
Invalidation Risk
A reversal in institutional flows (e.g., net selling) or a surge in insider sales would invalidate the positive signal.
These game-theory scenarios are AI-generated from this stock's institutional holders' Form 13F data on SEC EDGAR and reflect historical patterns only — not a trading recommendation. Source filings linked below.
See the institutional 13F filings behind this signalCMCSA does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
Terms of Use for AI
AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/stocks/CMCSA
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Armstrong Jason | 2026-03-05 | $143K |
| Sell | Cavanagh Michael J | 2026-02-11 | $1.89M |
| Sell | NAKAHARA ASUKA | 2026-02-03 | $246K |
No Form 144 planned sale filings in the last 90 days
No Schedule 13D/13G filings for this ticker
2
Filings (14d)
Comcast Corporation issued a press release on July 23, 2026, reporting its financial results for the three and six months ended June 30, 2026. This 8-K filing includes that press release (Exhibit 99.1) and a related explanation of why the company believes its non-GAAP financial measures are useful to investors (Exhibit 99.2). No specific revenue or earnings figures are provided in the filing excerpt itself.
View Full Filing (SEC EDGAR)No AI summary for this filing type
View Full Filing (SEC EDGAR)20030N101, 20030N10 , 20030N20 , 20030N200, 20030N901, 20030N951, 20030n101, 20030n200
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Access CMCSA's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/CMCSACLI
npx alphasmo stocks get CMCSA