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Comscore Inc (SCOR1EUR)

CUSIP: 20564W105 | EO | 552 institutional holders

Quarters

Q3 2026Q2 2026Q1 2026Q4 2025Q3 2025
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Beneficial Ownership — 13D / 13G

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5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

HolderShares% of ClassChangeEvent Datevs 13F
13D/ACharter Communications Holding Company, LLC15,090,68150.0%+7,530,446Aug 19, 2026No 13F filer matched
13D/ALiberty Broadband Corporation00.0%Fell below 5%Aug 19, 2026No 13F filer matched
13D/AWPP PLC565,9683.8%Newly reportedDec 29, 2025No 13F filer matched
13D/ACharter Communications Holding Company, LLC15,090,681
50.0% of class · Aug 19, 2026+7,530,446
No 13F filer matched
13D/ALiberty Broadband Corporation0
0.0% of class · Aug 19, 2026Fell below 5%
No 13F filer matched
13D/AWPP PLC565,968
3.8% of class · Dec 29, 2025Newly reported
No 13F filer matched

Institutional Holders — Q3 2026

Byrne Asset Management LLC13,380
0.0% of portfolio›$60.6K
StyleTurnoverLocationFiled
Byrne Asset Management LLC
13,380$60.6K0.0%CoreLowKingston, NJ2026-10-06