Cellectar Biosciences, Inc. (CLRB) Institutional Ownership

Ownership Summary

Recent 13F filings as of December 2025 show that 19 institutional investors hold a position in Cellectar Biosciences, Inc. (NASDAQ:CLRB).

• These investors collectively held 11.0% of the company's total shares outstanding in December 2025, up from 9.4% in September 2025.
• Quarterly data indicates a 44.75% shift in institutional share volume, and the annual owner count reflects a decrease of 38.71%.
• A review of institutional activity for Cellectar Biosciences shows 11 of 19 filers increasing their positions, while 1 reduced their stake, and 7 remained unchanged.
• The aggregate institutional position in Cellectar Biosciences now stands at 346.84K shares as of December 2025, after investors increased their holdings (up by 107.22K shares quarter on quarter which is down 4.75Mn shares year over year).
• Bleichroeder LP continues to be the largest institutional holder of Cellectar Biosciences as of December 31, 2025, with a position of 100.00K shares, representing 3.17% of the company's outstanding stock.
• Among the most significant buyers of Cellectar Biosciences during December 2025 were DRW Securities, LLC (24.09K), VANGUARD GROUP INC (23.95K), Sequoia Financial Advisors, LLC (14.57K), Warberg Asset Management LLC (13.90K), XTX Topco Ltd (12.24K).
• Leading sellers of Cellectar Biosciences stock in December 2025 included OSAIC HOLDINGS, INC. (16).
• The top 10 institutional holders of Cellectar Biosciences for the quarter ending December 2025 included Bleichroeder LP (100.00K), VANGUARD GROUP INC (89.12K), DRW Securities, LLC (45.19K), GEODE CAPITAL MANAGEMENT, LLC (28.64K), Sequoia Financial Advisors, LLC (25.35K), Warberg Asset Management LLC (13.90K), XTX Topco Ltd (12.24K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (12.20K), Riverview Capital Advisers, LLC (10.38K), BlackRock, Inc. (4.75K).