Assembly BiosciencesASMB
13F holders, Q2 2025 (June 30)At the end of Q2 2025, 33 institutions reported holding Assembly Biosciences Inc. (ASMB) in their 13F filings, down 4 from Q1 2025. 5 opened new positions and 9 sold out. The largest holders were Gilead Sciences, Inc. ($40.0M), Vanguard Group Inc. ($4.6M) and B Group, Inc. ($3.4M). 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
- Assembly Biosciences Inc.
- CUSIP
- 045396207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $463K |
| Exits | 9 | $1.0M |
All 13F filers, Q1 2025 → Q2 2025: 103,708 shares bought and 130,901 shares sold, net −27,193 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 33 holders
| Gilead Sciences, Inc. | 3.13% | No change | 2,209,471 | $40.0M |
| Vanguard Group Inc. | 0.00% | Add +17.5% | 253,825 | $4.6M |
| B Group, Inc. | 2.96% | Reduce -5.3% | 189,350 | $3.4M |
| Renaissance Technologies | 0.00% | Reduce -5.1% | 107,521 | $1.9M |
| BlackRock, Inc. | 0.00% | Add +13.5% | 89,672 | $1.6M |
| Geode Capital Management, LLC | 0.00% | Add +6.9% | 51,015 | $925K |
| Monimus Capital Management, LP | 0.61% | No change | 42,067 | $762K |
| Citadel Advisors | 0.00% | Add +191.4% | 35,725 | $647K |
| Northern Trust Corp. | 0.00% | Reduce -0.9% | 28,075 | $509K |
| Federated Hermes, Inc. | 0.00% | No change | 25,394 | $460K |
| Acadian Asset Management LLC | 0.00% | Reduce -11.3% | 20,421 | $369K |
| Palumbo Wealth Management LLC | 0.10% | Add +3.8% | 18,667 | $338K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 15,225 | $276K |
| Gsa Capital Partners LLP | 0.02% | New | 14,840 | $269K |
| State Street Corp. | 0.00% | No change | 14,009 | $254K |
| Man Group plc | 0.00% | Reduce -26.3% | 13,227 | $240K |
| Lynx1 Capital Management LP | 0.05% | New | 10,366 | $188K |
| UBS Group AG | 0.00% | Add +282.4% | 2,933 | $53K |
| Barclays PLC | 0.00% | Reduce -19.0% | 2,779 | $50K |
| Morgan Stanley | 0.00% | Reduce -6.6% | 2,149 | $39K |
| BNP Paribas Financial Markets | 0.00% | No change | 302 | $5K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 260 | $5K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -30.8% | 250 | $5K |
| Raymond James Financial Inc. | 0.00% | New | 250 | $5K |
| Rhumbline Advisers | 0.00% | No change | 190 | $3K |
| Wells Fargo & Company | 0.00% | No change | 145 | $3K |
| Ameriflex Group, Inc. | 0.00% | No change | 83 | $1K |
| SBI Securities Co., Ltd. | 0.00% | No change | 67 | $1K |
| Royal Bank of Canada | 0.00% | New | 53 | $1K |
| EverSource Wealth Advisors, LLC | 0.00% | No change | 55 | $997 |
| Bank of America Corp. | 0.00% | Add +33.3% | 52 | $942 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 34 | $616 |
| JPMorgan Chase & Co. | 0.00% | No change | 7 | $127 |
"% of holder's portfolio" is ASMB's weight in each manager's 13F, not the share of Assembly Biosciences Inc. the manager owns.