Comscore, Inc. (SCOR) Institutional Ownership

Ownership Summary

According to SEC filings for the period ending December 2025, Comscore, Inc. (NASDAQ:SCOR) is held by 17 institutional firms.

• Institutional ownership in Comscore edged down to 10.8% in December 2025, compared to 22.6% in September 2025.
• The company experienced a 1.60% quarterly change in institutional shares held, alongside a decrease of 39.29% in total owners annually.
• Among the 17 institutional holders of Comscore, 3 added to their stakes while 4 trimmed their positions and 10 held steady.
• The aggregate institutional position in Comscore now stands at 563.23K shares as of December 2025, after investors increased their holdings (up by 8.88K shares quarter on quarter which is down 537.43K shares year over year).
• As of December 31, 2025, VANGUARD GROUP INC held Comscore's largest shareholding position with over 172.73K shares, representing 3.32% of total outstanding shares.
• Among the most significant buyers of Comscore during December 2025 were Byrne Asset Management LLC (14.25K), GEODE CAPITAL MANAGEMENT, LLC (965), UBS Group AG (413).
• Leading sellers of Comscore stock in December 2025 included ACADIAN ASSET MANAGEMENT LLC (4.74K), RENAISSANCE TECHNOLOGIES LLC (1.60K), MORGAN STANLEY (238), PNC FINANCIAL SERVICES GROUP, INC. (168).
• The top 10 institutional holders of Comscore for the quarter ending December 2025 included VANGUARD GROUP INC (172.73K), CLUNE & ASSOCIATES, LTD. (126.66K), ACADIAN ASSET MANAGEMENT LLC (84.08K), GEODE CAPITAL MANAGEMENT, LLC (52.93K), RENAISSANCE TECHNOLOGIES LLC (41.72K), BlackRock, Inc. (38.97K), Byrne Asset Management LLC (20.10K), STATE STREET CORP (13.30K), Covestor Ltd (10.38K), PNC FINANCIAL SERVICES GROUP, INC. (1.64K).