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CMCSA · Comcast Corp · Holdings

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$21.58 +0.01 (+0.05%)
Market Cap
$77.52B
Shares
3.55B
Volume · Oct 6 23.69M Avg daily vol (3M) 29.13M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 1,914
Total Value: $79,139,759,591
Total Shares: 3,227,966,872
Showing 1–100 of 1,982 holdings by value · page 1 of 20

Institutional Ownership Trend

28 quarters

Holder Concentration

Across 1,915 13F filers
Top Holder
9.7%
Sep 2023 → Jun 2026 · range 9.7% – 12.1%
of institutional value
Top 5
31.0%
Sep 2023 → Jun 2026 · range 31.0% – 36.2%
of institutional value
Top 10
46.7%
Sep 2023 → Jun 2026 · range 44.9% – 48.1%
of institutional value
HHI
298
Sep 2023 → Jun 2026 · range 298 – 378
Broadly held
Showing 100 of 1,982
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1166691 CUSIP 20030N101 13F (30d) 53 filings 37 filers Visit website Investor relations