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CMCSA · Comcast Corp

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$26.85 +0.43 (+1.63%) At close · Aug 21
Market Cap
$93.75B
Shares
3.55B

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.

Holders: 1,887
Total Value: $79,003,127,095
Total Shares: 3,222,376,392

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 1,887 13F filers · Δ vs Mar 31, 2026
Top Holder
9.7%
Sep 2023 → Jun 2026 · range 9.7% – 12.1%
−0.3 pts
Top 5
31.0%
Sep 2023 → Jun 2026 · range 31.0% – 36.2%
−1.9 pts
Top 10
46.8%
Sep 2023 → Jun 2026 · range 44.9% – 48.1%
+0.2 pts
HHI
299
Sep 2023 → Jun 2026 · range 299 – 378
Broadly held−9

Quarterly Activity

vs Mar 31, 2026
New
158
Increased
676
Decreased
867
Sold Out
332
Unchanged
186
Holder count: -174
Institutional value: -12.4%
Shares held: +2.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 1,955
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1166691 CUSIP 20030N101 13F (30d) 1569 filings 1488 filers Visit website Investor relations