Greenwich LifeSciences, Inc. (GLSI) Institutional Ownership

Ownership Summary

A total of 51 institutions have reported a stake in Greenwich LifeSciences, Inc. (NASDAQ:GLSI) as of September 2025, according to recent 13F filings with the SEC.

• The percentage of Greenwich LifeSciences owned by institutions changed from 9.2% in June 2025 to 9.1% in September 2025, marking a slight down trend.
• In percentage terms, this reflects as a holdings change of 1.19% quarter on quarter, and an increase of 24.39% year over year.
• Of these 51 institutional investors, 21 increased their holdings in Greenwich LifeSciences, while 15 of them reduced positions, and 15 investors maintained their exposure.
• This class of investors increased its holdings in Greenwich LifeSciences to 1.21Mn shares for the 13F-cycle ending September 2025, up by 14.33K shares quarter on quarter, and up 56.21K shares year over year.
• As of September 30, 2025, BlackRock, Inc. held Greenwich LifeSciences's largest shareholding position with over 363.30K shares, representing 2.72% of total outstanding shares.
• Among the most significant buyers of Greenwich LifeSciences during September 2025 were DEUTSCHE BANK AG\ (21.50K), CITADEL ADVISORS LLC (20.94K), VANGUARD GROUP INC (13.18K), RENAISSANCE TECHNOLOGIES LLC (11.10K), GOLDMAN SACHS GROUP INC (3.35K).
• Leading sellers of Greenwich LifeSciences stock in September 2025 included MARSHALL WACE, LLP (24.09K), MILLENNIUM MANAGEMENT LLC (18.68K), NORTHERN TRUST CORP (6.87K), BlackRock, Inc. (3.88K), MORGAN STANLEY (3.04K).
• The top 10 institutional holders of Greenwich LifeSciences for the quarter ending September 2025 included BlackRock, Inc. (363.30K), VANGUARD GROUP INC (282.18K), GEODE CAPITAL MANAGEMENT, LLC (142.12K), STATE STREET CORP (81.95K), NORTHERN TRUST CORP (75.91K), RENAISSANCE TECHNOLOGIES LLC (38.40K), MARSHALL WACE, LLP (32.05K), DEUTSCHE BANK AG\ (21.50K), CITADEL ADVISORS LLC (20.94K), STRS OHIO (20.00K).