Assembly BiosciencesASMB
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 57 institutions reported holding Assembly Biosciences Inc. (ASMB) in their 13F filings, up 24 from Q2 2025. 31 opened new positions and 7 sold out. The largest holders were Gilead Sciences, Inc. ($115.3M), Farallon Capital Management, L.L.C. ($31.4M) and Ra Capital Management, L.P. ($26.1M). 4 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Assembly Biosciences Inc.
- CUSIP
- 045396207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 31 | $172.4M |
| Exits | 7 | $440K |
All 13F filers, Q2 2025 → Q3 2025: 9,374,700 shares bought and 40,571 shares sold, net +9,334,129 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 57 holders
| Gilead Sciences, Inc. | 6.44% | Add +103.9% | 4,505,391 | $115.3M |
| Farallon Capital Management, L.L.C. | 0.18% | New | 1,227,590 | $31.4M |
| Ra Capital Management, L.P. | 0.32% | New | 1,020,410 | $26.1M |
| Commodore Capital LP | 1.25% | New | 1,000,000 | $25.6M |
| Janus Henderson Group PLC | 0.01% | New | 752,626 | $19.2M |
| Vanguard Group Inc. | 0.00% | Add +97.8% | 502,112 | $12.9M |
| Frazier Life Sciences Management, L.P. | 0.35% | New | 456,249 | $11.7M |
| Blackstone Inc. | 0.05% | New | 447,789 | $11.5M |
| Franklin Resources Inc. | 0.00% | New | 238,169 | $11.4M |
| Point72 Asset Management | 0.02% | New | 296,017 | $7.6M |
| Parkman Healthcare Partners LLC | 0.71% | New | 250,981 | $6.4M |
| B Group, Inc. | 4.49% | Reduce -7.2% | 175,706 | $4.5M |
| BlackRock, Inc. | 0.00% | Add +89.8% | 170,199 | $4.4M |
| Renaissance Technologies | 0.01% | Add +42.9% | 153,611 | $3.9M |
| Patient Square Capital LP | 0.93% | New | 135,182 | $3.5M |
| Susquehanna International Group, LLP | 0.00% | New | 131,026 | $3.4M |
| Geode Capital Management, LLC | 0.00% | Add +155.0% | 130,095 | $3.3M |
| Schonfeld Strategic Advisors LLC | 0.02% | New | 121,888 | $3.1M |
| Marshall Wace, LLP | 0.00% | New | 85,215 | $2.2M |
| Stempoint Capital LP | 0.34% | New | 66,130 | $1.7M |
| Citadel Advisors | 0.00% | Add +50.8% | 53,878 | $1.4M |
| State Street Corp. | 0.00% | Add +219.9% | 44,814 | $1.1M |
| Monimus Capital Management, LP | 0.80% | No change | 42,067 | $1.1M |
| Northern Trust Corp. | 0.00% | Add +42.3% | 39,955 | $1.0M |
| MPM Bioimpact LLC | 0.17% | New | 39,665 | $1.0M |
| Palumbo Wealth Management LLC | 0.28% | Add +86.4% | 34,798 | $891K |
| Jane Street Group, LLC | 0.00% | New | 33,828 | $866K |
| Ellsworth Advisors, LLC | 0.18% | New | 29,950 | $852K |
| Informed Momentum Co LLC | 0.09% | New | 29,072 | $744K |
| Federated Hermes, Inc. | 0.00% | No change | 25,394 | $650K |
| Walleye Capital LLC | 0.01% | New | 24,501 | $627K |
| Acadian Asset Management LLC | 0.00% | Add +14.1% | 23,290 | $595K |
| Millennium Management | 0.00% | New | 21,608 | $553K |
| ADAR1 Capital Management, LLC | 0.05% | New | 18,947 | $485K |
| Quadrature Capital Ltd | 0.01% | New | 17,935 | $459K |
| Goldman Sachs Group Inc. | 0.00% | New | 17,656 | $452K |
| Cubist Systematic Strategies, LLC | 0.01% | New | 16,161 | $414K |
| UBS Group AG | 0.00% | Add +437.4% | 15,763 | $404K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 15,225 | $390K |
| XTX Topco Ltd | 0.02% | New | 12,806 | $328K |
| Trexquant Investment LP | 0.00% | New | 12,526 | $321K |
| Gsa Capital Partners LLP | 0.03% | Reduce -16.3% | 12,420 | $318K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | New | 11,156 | $286K |
| Qube Research & Technologies Ltd | 0.00% | New | 11,030 | $282K |
| Barclays PLC | 0.00% | Add +42.5% | 3,961 | $101K |
| Morgan Stanley | 0.00% | Add +64.1% | 3,527 | $90K |
| Bank of America Corp. | 0.00% | Add +6382.7% | 3,371 | $86K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 260 | $7K |
| Rhumbline Advisers | 0.00% | No change | 190 | $5K |
| Wells Fargo & Company | 0.00% | No change | 145 | $4K |
| Osaic Holdings, Inc. | 0.00% | New | 100 | $3K |
| SBI Securities Co., Ltd. | 0.00% | Add +1.5% | 68 | $2K |
| BNP Paribas Financial Markets | 0.00% | Reduce -80.8% | 58 | $1K |
| EverSource Wealth Advisors, LLC | 0.00% | No change | 55 | $1K |
| Quadrant Capital Group LLC | 0.00% | New | 22 | $564 |
| Point72 Europe (London) LLP | 0.00% | New | 13 | $332 |
| JPMorgan Chase & Co. | 0.00% | No change | 7 | $179 |
"% of holder's portfolio" is ASMB's weight in each manager's 13F, not the share of Assembly Biosciences Inc. the manager owns.