What does CUSIP 20564W105 represent in this 13F holders report?

CUSIP 20564W105 is the security identifier for SCOR - COMSCORE, INC. - Common Stock, par value $0.001 per share used to aggregate holder disclosures.

How many institutions held SCOR - COMSCORE, INC. - Common Stock, par value $0.001 per share in Q1 2019?

81 institutional investors reported SCOR - COMSCORE, INC. - Common Stock, par value $0.001 per share for Q1 2019. Use the holders table for investor-level position and value details.

COMSCORE, INC. - Common Stock, par value $0.001 per share (SCOR)

CUSIP: 20564W105

Q1 2019 13F Holders as of 31 Mar 2019

Security type / class: Equity / Common Stock, par value $0.001 per share
Total 13F shares: 42,946,826
Total 13F value: $869,673,284
Share change: +1,051,608
Put/Call ratio: 119%
SEC-reported price per share: $20.25
Number of holders: 81
Value change: +$22,476,458
Number of buys: 50
Number of sells: 21
Shares outstanding: 14,893,895

Security key

20564W105

Report period

Q1 2019

Institutions

Top holders

SCOR full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 COMSCORE, INC. SEC filings COMSCORE, INC. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 20564W105

Newer quarter: Q3 2025

Recent filing periods:

Q2 2026 Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of SCOR - COMSCORE, INC. - Common Stock, par value $0.001 per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

PRIMECAP MANAGEMENT CO/CA/

Disclosed value leader

PRIMECAP MANAGEMENT CO/CA/

Comparable rows

15/15

Latest evidence

31 Dec 2018

13F Lead comparable stake: 58% Showing 1-6 of 15 holder rows.

Quick read

PRIMECAP MANAGEMENT CO/CA/ leads the comparable SEC ownership view at 58%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens PRIMECAP MANAGEMENT CO/CA/'s linked filing trail.

Comparable ownership Top 5

PRIMECAP MANAGEMENT CO/CA/ 58%

RGM Capital, LLC 29%

FMR LLC 24%

Bares Capital Management, Inc. 24%

VISTA EQUITY PARTNERS MANAGEMENT,... 19%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
PRIMECAP MANAGEMENT CO/CA/	13F Company 13F	58%	$124,755,000 8,645,532 shares	—	31 Dec 2018
RGM Capital, LLC	13F Company 13F	29%	$62,984,000 4,364,820 shares	—	31 Dec 2018
FMR LLC	13F Company 13F	24%	$51,101,000 3,541,357 shares	—	31 Dec 2018
Bares Capital Management, Inc.	13F Company 13F	24%	$50,926,000 3,529,171 shares	—	31 Dec 2018
VISTA EQUITY PARTNERS MANAGEMENT, LLC	13F Company 13F	19%	$40,014,000 2,772,996 shares	—	31 Dec 2018
Weiss Multi-Strategy Advisers LLC	13F Company 13F	15%	$31,939,000 2,213,343 shares	—	31 Dec 2018

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q1 2019

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

42,946,826

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2019 vs Q1 2026 Across Filers

Q1 2026 holders

Q1 2019 holders

Holder diff

Investor	Q1 2026 Shares	Q1 2019 Shares	Share Diff	Share Chg %	Q1 2026 value	Q1 2019 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend