Sentiment · CMCSA
Institutional 13F for CMCSA
AI-generated plain-English read of institutional 13f for CMCSA. Updated daily.
Stable institutional base, marquee holder adding
moderateMost institutions are holding flat, but a marquee holder quietly added. Low-noise accumulation from a top name: a positive structural read that plays out over multiple quarters, not weeks.
What will probably happen
- Stable institutional positioning means no structural change in supply or demand: price direction will be driven by fundamentals and sentiment, not institutional flows.
- Concentration in a few large holders creates binary risk: if any of the top-5 decide to exit, the price impact will be amplified.
What to do
- If you HOLD this stock
- Institutional positioning is steady. No action triggered from this signal: hold and use other catalysts for sizing decisions.
- If you're EVALUATING this stock
- Institutions are holding flat: no structural tailwind, but no headwind either. Entry here is thesis-driven; the 13F read is neutral.
- If you trade OPTIONS
- No institutional edge for directional options. Look to technicals and fundamentals for structure selection.
only 13 institutions reporting
Technical details
Technical analysis
- Adders
- 1
- Net flow
- Stable
- Reducers
- 0
- Velocity
- Slow
- Concentration
- Top Heavy
- Marquee action
- Marquee Buying
- Institutions reporting
- 13
- Most recent 13F filing
- 2026-09-30
- Marquee holders (top-5)
- BlackRock, Vanguard Group, State Street Corp, Charles Schwab, Capital Research Global Investors
- Max single-holder change
- +0.6%
- Top-5 share of inst float
- $34.52B / $37.45B (92%)
Key levels
| Level | Value |
|---|---|
| all value | 37,450,853,532 |
| top5 value | 34,520,813,199 |
| adder count | 1 |
| reducer count | 0 |
| max change pct | 0.006 |
| staleness days | 43.804 |
| institution count | 13 |
Caveats
- 13F filings are lagged 45 days after quarter end: the position changes you're reading reflect what funds did one quarter ago.
- 13F shows long positions only: derivatives, shorts, and non-US holdings are not visible.
- Concentration in a few large holders means a single fund's reallocation could move price disproportionately.