Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in CLRB held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Caligan Partners LP | 470K | $1.3M | β | 3.842% | 0.06% |
| 2 | STEMPOINT CAPITAL LP | 355K | $987K | β | 2.902% | 0.17% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 327K | $910K | +299.8% | 2.676% | 0.00% |
| 4 | SILVERARC CAPITAL MANAGEMENT, LLC | 322K | $894K | β | 2.630% | 0.09% |
| 5 | Bleichroeder LP | 289K | $803K | +188.7% | 2.360% | 0.14% |
| 6 | Jupiter Topco LLC | 274K | $759K | β | 2.241% | 0.00% |
| 7 | BALYASNY ASSET MANAGEMENT L.P. | 220K | $612K | β | 1.799% | 0.00% |
| 8 | Nantahala Capital Management, LLC | 220K | $612K | β | 1.799% | 0.01% |
| 9 | Empery Asset Management, LP | 190K | $527K | β | 1.550% | 0.61% |
| 10 | DIADEMA PARTNERS LP | 138K | $385K | β | 1.131% | 0.05% |
| 11 | Stonepine Capital Management, LLC | 105K | $291K | β | 0.855% | 0.07% |
| 12 | Persistent Asset Partners Ltd | 93K | $258K | β | 0.760% | 0.08% |
| 13 | BOOTHBAY FUND MANAGEMENT, LLC | 85K | $236K | β | 0.696% | 0.00% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 53K | $148K | +1.1% | 0.436% | 0.00% |
| 15 | VANGUARD FIDUCIARY TRUST CO | 46K | $128K | +178.9% | 0.378% | 0.00% |
| 16 | Sequoia Financial Advisors, LLC | 22K | $61K | +15.9% | 0.179% | 0.00% |
| 17 | Riverview Capital Advisers, LLC | 10K | $50K | 0.0% | 0.085% | 0.01% |
| 18 | NORTHERN TRUST CORP | 15K | $41K | β | 0.121% | 0.00% |
| 19 | BlackRock, Inc. | 5K | $13K | -0.2% | 0.039% | 0.00% |
| 20 | UBS Group AG | 3K | $9K | -67.9% | 0.025% | 0.00% |
| 21 | BARCLAYS PLC | 561 | $2K | β | 0.005% | 0.00% |
| 22 | MORGAN STANLEY | 510 | $1K | 0.0% | 0.004% | 0.00% |
| 23 | TD Waterhouse Canada Inc. | 63 | $178 | 0.0% | 0.001% | 0.00% |
| 24 | ACADIAN ASSET MANAGEMENT LLC | 17K | $46 | β | 0.136% | 0.00% |
| 25 | SBI Securities Co., Ltd. | 11 | $31 | 0.0% | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in CLRB β a direct measure of their conviction.
Filings activity in CLRB during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 29 | +53% | 26.65% | +21.71 pp | $9M | +1011% |
| Q1 2026 | 19 | +0.0% | 4.94% | +0.14 pp | $1M | 11% |
| Q4 2025 | 19 | 5.0% | 4.80% | +2.55 pp | $1M | 41% |
| Q3 2025 | 20 | +11% | 2.25% | +1.40 pp | $2M | +138% |
| Q2 2025 | 18 | +1700% | 0.85% | +0.84 pp | $1M | +1093% |
| Q2 2024 | 1 | 98% | 0.01% | 5.60 pp | $0M | 100% |
| Q2 2021 | 44 | 2.2% | 5.61% | +4.92 pp | $245M | +504% |
| Q1 2021 | 45 | β | 0.69% | β | $41M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as a key fundamental indicator because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| May 7, 2026 | CARUSO JAMES V | Buy | 9K | $2.88 | $25K |
| May 7, 2026 | Longcor Jarrod | Buy | 9K | $2.88 | $25K |
Quick answers to the most common questions about buying CLRB stock.
Based on Q2 2026 13F filings, institutional ownership of Cellectar Biosciences, Inc. stands at 26.7%, held across 29 reporting institutions.
Caligan Partners LP is the largest reported institutional holder of CLRB, with approximately 469,998 shares worth $0.00B as of Q2 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of CLRB.
Our composite Smart Money Score for CLRB is 55 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
13 institutions opened new positions in CLRB during Q2 2026, while 4 fully exited. 11 added to existing positions and 1 trimmed.
CLRB institutional ownership rose by 21.71 percentage points quarter-over-quarter, with a net change of +10 holders.
The top 10 institutions account for 86.3% of all reported 13F value in CLRB, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Cellectar Biosciences, Inc. (CLRB) Institutional Ownership