Rockwell Medical, Inc. (RMTI) Institutional Ownership

Ownership Summary

A total of 35 institutions have reported a stake in Rockwell Medical, Inc. (NASDAQ:RMTI) as of September 2025, according to recent 13F filings with the SEC.

• These investors collectively held 10.9% of the company's total shares outstanding in September 2025, down from 25.0% in June 2025.
• The company experienced a 13.81% quarterly change in institutional shares held, alongside a decrease of 36.36% in total owners annually.
• Of these 35 institutional investors, 13 increased their holdings in Rockwell Medical, while 8 of them reduced positions, and 14 investors maintained their exposure.
• This class of investors increased its holdings in Rockwell Medical to 3.34Mn shares for the 13F-cycle ending September 2025, up by 405.17K shares quarter on quarter, and down 6.12Mn shares year over year.
• VANGUARD GROUP INC's holding of 1.35Mn shares as of September 30, 2025 makes it the primary institutional investor in Rockwell Medical, owning 4.42% of the stock.
• Among the most significant buyers of Rockwell Medical during September 2025 were VANGUARD GROUP INC (148.74K), GSA CAPITAL PARTNERS LLP (141.67K), PERKINS CAPITAL MANAGEMENT INC (71.92K), RENAISSANCE TECHNOLOGIES LLC (20.45K), PANAGORA ASSET MANAGEMENT INC (20.16K).
• Leading sellers of Rockwell Medical stock in September 2025 included CORSAIR CAPITAL MANAGEMENT, L.P. (20.00K), WealthTrust Axiom LLC (16.80K), UBS Group AG (4.17K), MORGAN STANLEY (3.59K), Richmond Brothers, Inc. (1.75K).
• The top 10 institutional holders of Rockwell Medical for the quarter ending September 2025 included VANGUARD GROUP INC (1.35Mn), RENAISSANCE TECHNOLOGIES LLC (562.21K), GEODE CAPITAL MANAGEMENT, LLC (323.15K), BlackRock, Inc. (222.15K), GSA CAPITAL PARTNERS LLP (163.98K), STATE STREET CORP (100.90K), HighTower Advisors, LLC (93.52K), NORTHERN TRUST CORP (82.13K), PERKINS CAPITAL MANAGEMENT INC (71.92K), PANAGORA ASSET MANAGEMENT INC (68.56K).