comScore, Inc.
comScore, Inc. (SCOR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · SCOR · as of Sep 30, 2025
Ownership Breakdown
29
Institutional Holders
▲ 3 vs Q2
$10.22M
Total Inst. Value
▲ $4.69M vs Q2
5.25M
Shares Outstanding
freeFloat 54.40%
1.17M
13F Shares Held
▲ 22,761 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
SCOR largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
WESTERLY CAPITAL MANAGEMENT, LLC services-business services, nec | 400.0K | 7.82% | 7.82% | $3.49B | Nov 14, 2025 | — held |
VANGUARD GROUP INC services-business services, nec | 172.7K | 3.38% | 3.38% | $1.51B | Nov 7, 2025 | — held |
CLUNE & ASSOCIATES, LTD. services-business services, nec | 126.7K | 2.48% | 2.48% | $1.11B | Oct 17, 2025 | — held |
CERBERUS CAPITAL MANAGEMENT, L.P. services-business services, nec | 109.7K | 2.14% | 2.14% | $957.28M | Nov 14, 2025 | — held |
ACADIAN ASSET MANAGEMENT LLC services-business services, nec | 88.8K | 1.74% | 1.74% | $774.00M | Nov 13, 2025 | — held |
GEODE CAPITAL MANAGEMENT, LLC services-business services, nec | 52.0K | 1.02% | 1.02% | $453.74M | Nov 12, 2025 | ▲ 907 |
RENAISSANCE TECHNOLOGIES LLC services-business services, nec | 43.3K | 84.70% | 84.70% | $378.19M | Nov 13, 2025 | ▲ 800 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP services-business services, nec | 39.1K | 76.37% | 76.37% | $341.03M | Nov 14, 2025 | ▲ 5.2K |
BLACKROCK, INC. services-business services, nec | 39.0K | 76.19% | 76.19% | $340.23M | Nov 12, 2025 | — held |
BRIDGEWAY CAPITAL MANAGEMENT, LLC services-business services, nec | 36.8K | 71.89% | 71.89% | $321.02M | Nov 14, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
4
Increased
+7.0K shares5
New Positions
first time holders5
Decreased
−5.4K shares2
Sold Out
fully exitedNet shares change (top 50)
+1.5K
+7.0K / −5.4K
Net new holders
+2
5 new / 2 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
SCOR insider trading · insider activity
Source: SEC Form 4
11
Buy transactions
13
Sell transactions
0.85
Buy/Sell ratio
$96M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Cerberus Capital Management, L.P.
| Dec 29, 2025 | Award | 4,223,621 | — | — | 4.22M | Form 4 ↗ |
Cerberus Capital Management, L.P.
| Dec 29, 2025 | Award | 3,286,825 | $0.00 | $3.3K | 3.40M | Form 4 ↗ |
Cerberus Capital Management, L.P.
| Dec 29, 2025 | Award | 5,000 | — | — | 5.0K | Form 4 ↗ |
Cerberus Capital Management, L.P.
| Dec 29, 2025 | D-Return | 31,928,301 | — | — | 0 | Form 4 ↗ |
CHARTER COMMUNICATIONS, INC. /MO/ 10 percent owner | Dec 29, 2025 | Award | 4,223,621 | — | — | 4.22M | Form 4 ↗ |
CHARTER COMMUNICATIONS, INC. /MO/ 10 percent owner | Dec 29, 2025 | Award | 3,286,825 | — | — | 3.34M | Form 4 ↗ |
CHARTER COMMUNICATIONS, INC. /MO/ 10 percent owner | Dec 29, 2025 | D-Return | 31,928,301 | — | — | 0 | Form 4 ↗ |
Liberty Broadband Corp
| Dec 29, 2025 | Award | 4,223,621 | — | — | 4.22M | Form 4 ↗ |
Liberty Broadband Corp
| Dec 29, 2025 | Award | 3,286,825 | — | — | 3.29M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
comScore, Inc. (SCOR) is primarily owned by institutional investors, who hold approximately 22.3% of total shares outstanding. Company insiders own approximately 45.60%, while retail and public investors account for the remaining 32.09%.
The largest institutional shareholder of comScore, Inc. is WESTERLY CAPITAL MANAGEMENT, LLC, holding approximately 400,000 shares — equal to 7.82% of outstanding shares — as of September 30, 2025.
A total of 29 institutional investors currently hold SCOR stock, with a combined institutional value of approximately $10,218,629 as of the most recent 13F filing period.
Frequently asked questions
SCOR ownershipcomScore, Inc. (SCOR) is primarily owned by institutional investors, who hold approximately 22.3% of shares. The largest shareholder is WESTERLY CAPITAL MANAGEMENT, LLC with a 7.82% stake. Company insiders hold 45.60%. Data sourced from SEC Form 13F as of September 30, 2025.