Cellectar Biosciences, Inc. (CLRB) Ownership
CLRB ownership summary
as of October 18, 2026- Institutions
- 34.7% of shares outstanding
- Insiders
- 1.75% of shares outstanding
- Shares outstanding
- 9.5M
- Float
- 9.3M shares available to trade
- Short interest
- 1.76% 166K shares short
- Days to cover
- 2.72 short interest down 13.0% vs prior month
- Institutions 34.71%
- Insiders 1.75%
- Other investors 63.54%
CLRB top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Caligan Partners LP | 4.97% | 470K | $535,798 | +469,998 (0.0%) | June 30, 2026 |
| 2 | Nantahala Capital Management, LLC | 4.66% | 440K | $501,595 | +439,996 (0.0%) | June 30, 2026 |
| 3 | StemPoint Capital LP | 3.76% | 355K | $404,629 | +354,938 (0.0%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 3.46% | 327K | $373,198 | +245,483 (+299.8%) | June 30, 2026 |
| 5 | SILVERARC CAPITAL MANAGEMENT, LLC | 3.40% | 322K | $366,770 | +321,728 (0.0%) | June 30, 2026 |
| 6 | Bleichroeder LP | 3.05% | 289K | $329,094 | +188,679 (+188.7%) | June 30, 2026 |
| 7 | Jupiter Topco LLC | 2.90% | 274K | $312,538 | +274,156 (0.0%) | June 30, 2026 |
| 8 | Balyasny Asset Management LLC | 2.33% | 220K | $250,800 | +220,000 (0.0%) | June 30, 2026 |
| 9 | Empery Asset Management, LP | 2.01% | 190K | $216,150 | +189,605 (0.0%) | June 30, 2026 |
| 10 | Diadema Partners LP | 1.46% | 138K | $157,709 | +138,341 (0.0%) | June 30, 2026 |
| 11 | Stonepine Capital Management Llc | 1.11% | 105K | $119,187 | +104,550 (0.0%) | June 30, 2026 |
| 12 | Persistent Asset Partners Limited | 0.98% | 93K | $106,001 | +92,983 (0.0%) | June 30, 2026 |
| 13 | BOOTHBAY FUND MANAGEMENT, LLC | 0.90% | 85K | $96,979 | +85,069 (0.0%) | June 30, 2026 |
| 14 | Geode Capital Management, LLC | 0.56% | 53K | $60,820 | +573 (+1.1%) | June 30, 2026 |
| 15 | Vanguard Fiduciary Trust Co | 0.49% | 46K | $52,691 | +29,647 (+178.9%) | June 30, 2026 |
| 16 | Sequoia Financial Advisors LLC | 0.23% | 22K | $24,909 | +3,000 (+15.9%) | June 30, 2026 |
| 17 | Acadian Asset Management LLC | 0.18% | 17K | $18,898 | +16,577 (0.0%) | June 30, 2026 |
| 18 | Northern Trust Corp | 0.16% | 15K | $16,916 | +14,839 (0.0%) | June 30, 2026 |
| 19 | Riverview Capital Advisers LLC | 0.11% | 10K | $11,838 | — | June 30, 2026 |
| 20 | BlackRock Inc | 0.05% | 4,735 | $5,398 | −10 (−0.2%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 18 holders added 3.2M shares and 1 cut 10.
CLRB top mutual fund and ETF holders
5 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 1.95% | 184K | $209,925 | — | August 31, 2026 |
| 2 | Fidelity Extended Market Index | 0.50% | 47K | $53,637 | +4,534 (+10.7%) | August 31, 2026 |
| 3 | Abante Quant Value FI | 0.38% | 36K | $41,391 | — | August 31, 2026 |
| 4 | Fidelity Series Total Market Index | 0.11% | 10K | $11,964 | +4,854 (+86.0%) | August 31, 2026 |
| 5 | Fidelity Total Market Index | 0.04% | 3,586 | $4,088 | +1,522 (+73.7%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
CLRB insider transactions
latest 4| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-12 | John Neis | Sell | $3.70 | 198 | $733 |
| 2025-07-02 | Chad J Kolean | Buy | $4.99 | 5,000 | $24,950 |
| 2025-07-02 | James V Caruso | Buy | $4.99 | 10,000 | $49,900 |
| 2025-07-02 | Jarrod Longcor | Buy | $4.99 | 10,000 | $49,900 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
CLRB shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns CLRB
Institutional investors own 34.7% of Cellectar Biosciences's shares and insiders 1.75%. The largest holder is Caligan Partners LP with 4.97% of the shares (470K), as of June 30, 2026. Among the top 20 institutions, 18 added shares and 1 reduced their stake in the latest filings. Short interest is 1.76% of the float, or 2.72 days of average trading volume. The share count rose 55,690.8% since 2014.
Related: CLRB analyst forecast, CLRB key metrics. See the CLRB stock overview for the latest quote and news.
CLRB ownership FAQ
Who owns the most Cellectar Biosciences stock?
The largest shareholders of Cellectar Biosciences are Caligan Partners LP (4.97%), Nantahala Capital Management, LLC (4.66%), StemPoint Capital LP (3.76%), Vanguard Capital Management, LLC (3.46%), SILVERARC CAPITAL MANAGEMENT, LLC (3.40%).
What percentage of Cellectar Biosciences is owned by institutions?
Institutions hold 34.7% of Cellectar Biosciences's shares outstanding; insiders hold 1.75%.
Which funds own Cellectar Biosciences?
The largest fund holders of Cellectar Biosciences are Vanguard MStar Total Stk Mkt Idx Invest (1.95%), Fidelity Extended Market Index (0.50%), Abante Quant Value FI (0.38%), Fidelity Series Total Market Index (0.11%), Fidelity Total Market Index (0.04%).
What is Cellectar Biosciences's short interest?
166K shares of Cellectar Biosciences were sold short, 1.76% of the float; at the average daily volume it would take 2.72 days to cover.
Are insiders buying or selling Cellectar Biosciences?
Of the latest 4 reported insider transactions in Cellectar Biosciences (since July 2, 2025), 3 were purchases and 1 were sales.
How many shares of Cellectar Biosciences are outstanding?
Cellectar Biosciences has 9.5M shares outstanding, of which 9.3M are in the public float.