28 institutions reported holding $35.3M of COMSCORE INC (SCOR) in SEC 13F filings for 2026-03-31. Largest institutional holders: Cerberus Capital Management, L.P. ($23.6M), WESTERLY CAPITAL MANAGEMENT, LLC ($6.2M), VANGUARD CAPITAL MANAGEMENT LLC ($1.3M), CLUNE & ASSOCIATES, LTD. ($878,993), Beartown Capital Management, LLC ($875,877). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Cerberus Capital Management, L.P. | $23.6M | 3.4M | Hold |
| 2 | WESTERLY CAPITAL MANAGEMENT, LLC | $6.2M | 897,000 | Added |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $1.3M | 187,259 | New |
| 4 | CLUNE & ASSOCIATES, LTD. | $878,993 | 126,656 | Hold |
| 5 | Beartown Capital Management, LLC | $875,877 | 126,207 | Hold |
| 6 | ACADIAN ASSET MANAGEMENT LLC | $582,000 | 84,079 | Hold |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $442,310 | 63,723 | Added |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $283,992 | 40,921 | Trimmed |
| 9 | BlackRock, Inc. | $270,466 | 38,972 | Hold |
| 10 | MILLENNIUM MANAGEMENT LLC | $256,280 | 36,928 | New |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $143,672 | 20,702 | Added |
| 12 | VANGUARD FIDUCIARY TRUST CO | $132,394 | 19,077 | New |
| 13 | Byrne Asset Management LLC | $129,639 | 18,680 | Trimmed |
| 14 | STATE STREET CORP | $92,330 | 13,304 | Hold |
| 15 | Covestor Ltd | $72,000 | 10,376 | Hold |
| 16 | Vanguard Global Advisers, LLC | $10,972 | 1,581 | New |
| 17 | Tower Research Capital LLC (TRC) | $10,535 | 1,518 | Added |
| 18 | UBS Group AG | $8,044 | 1,159 | Added |
| 19 | PNC Financial Services Group, Inc. | $4,428 | 638 | Trimmed |
| 20 | MORGAN STANLEY | $736 | 106 | Hold |
| 21 | Activest Wealth Management | $694 | 100 | Hold |
| 22 | RHUMBLINE ADVISERS | $451 | 65 | Hold |
| 23 | BNP PARIBAS FINANCIAL MARKETS | $243 | 35 | Added |
| 24 | WELLS FARGO & COMPANY/MN | $69 | 10 | Hold |
| 25 | OSAIC HOLDINGS, INC. | $7 | 1 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31