Cellectar BiosciencesCLRB
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 21 institutions reported holding Cellectar Biosciences Inc. (CLRB) in their 13F filings, up 2 from Q2 2025. 6 opened new positions and 4 sold out. The largest holders were Bleichroeder LP ($560K), Vanguard Group Inc. ($365K) and Renaissance Technologies ($139K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Cellectar Biosciences Inc.
- CUSIP
- 15117F880
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 6 | $1.1M |
| Exits | 4 | $91K |
All 13F filers, Q2 2025 → Q3 2025: 208,568 shares bought and 15,811 shares sold, net +192,757 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 21 holders
| Bleichroeder LP | 0.11% | New | 100,000 | $560K |
| Vanguard Group Inc. | 0.00% | Add +15.7% | 65,171 | $365K |
| Renaissance Technologies | 0.00% | New | 24,900 | $139K |
| Geode Capital Management, LLC | 0.00% | Add +72.4% | 24,892 | $139K |
| DRW Securities, LLC | 0.01% | New | 21,101 | $118K |
| Citadel Advisors | 0.00% | New | 18,526 | $104K |
| Dimensional Fund Advisors LP | 0.00% | New | 13,033 | $73K |
| Sequoia Financial Advisors, LLC | 0.00% | New | 10,783 | $60K |
| Riverview Capital Advisers, LLC | 0.01% | Reduce -1.1% | 10,384 | $50K |
| BlackRock, Inc. | 0.00% | Add +0.1% | 4,745 | $27K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +459.0% | 1,090 | $6K |
| UBS Group AG | 0.00% | Reduce -74.9% | 908 | $5K |
| Morgan Stanley | 0.00% | No change | 510 | $3K |
| Bank of America Corp. | 0.00% | Add +1250.0% | 27 | $152 |
| Group One Trading LLC | 0.00% | Reduce -58.9% | 23 | $129 |
| Osaic Holdings, Inc. | 0.00% | Add +4.5% | 23 | $122 |
| Citigroup Inc. | 0.00% | Add +1800.0% | 19 | $106 |
| SBI Securities Co., Ltd. | 0.00% | No change | 11 | $62 |
| US Bancorp \de | 0.00% | No change | 3 | $17 |
| Jones Financial Companies LLLP | 0.00% | No change | 3 | $17 |
| Danske Bank A/S | 0.00% | No change | 2 | $11 |
"% of holder's portfolio" is CLRB's weight in each manager's 13F, not the share of Cellectar Biosciences Inc. the manager owns.