Assembly BiosciencesASMB
13F holders, Q1 2026 (March 31)75holders +6
13new positions
10sold out
4famous investors
$27.74avg. 13F price*
At the end of Q1 2026, 75 institutions reported holding Assembly Biosciences Inc. (ASMB) in their 13F filings, up 6 from Q4 2025. 13 opened new positions and 10 sold out. The largest holders were Gilead Sciences, Inc. ($125.0M), Farallon Capital Management, L.L.C. ($34.1M) and Ra Capital Management, L.P. ($28.3M). 4 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Assembly Biosciences Inc.
- CUSIP
- 045396207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 13 | $5.6M |
| Exits | 10 | $13.0M |
All 13F filers, Q4 2025 → Q1 2026: 779,587 shares bought and 946,675 shares sold, net −167,088 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 75 holders
| Gilead Sciences, Inc. | 5.90% | No change | 4,505,391 | $125.0M |
| Farallon Capital Management, L.L.C. | 0.20% | No change | 1,227,590 | $34.1M |
| Ra Capital Management, L.P. | 0.30% | No change | 1,020,410 | $28.3M |
| Commodore Capital LP | 1.61% | No change | 1,000,000 | $27.8M |
| Janus Henderson Group PLC | 0.01% | Add +1.4% | 849,309 | $23.5M |
| Paradigm Biocapital Advisors LP | 0.38% | No change | 665,251 | $18.5M |
| Vanguard Capital Management LLC | 0.00% | — | 490,447 | $13.6M |
| Parkman Healthcare Partners LLC | 1.18% | Add +64.9% | 411,227 | $11.4M |
| Point72 Asset Management | 0.02% | Reduce -42.7% | 344,105 | $9.5M |
| Blackstone Inc. | 0.03% | Reduce -6.9% | 296,855 | $8.2M |
| Millennium Management | 0.01% | Add +137.9% | 233,650 | $6.5M |
| BlackRock, Inc. | 0.00% | Add +5.4% | 202,743 | $5.6M |
| Stempoint Capital LP | 0.99% | Add +18.3% | 185,435 | $5.1M |
| B Group, Inc. | 3.61% | No change | 175,706 | $4.9M |
| Marshall Wace, LLP | 0.00% | Add +26.6% | 163,400 | $4.5M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | No change | 161,000 | $4.5M |
| Patient Square Capital LP | 0.67% | Add +7.3% | 136,315 | $3.8M |
| Geode Capital Management, LLC | 0.00% | Add +1.3% | 132,971 | $3.7M |
| Schonfeld Strategic Advisors LLC | 0.03% | Add +122.2% | 120,500 | $3.3M |
| Caption Management, LLC | 0.11% | Reduce -23.2% | 81,841 | $2.3M |
| HighVista Strategies LLC | 0.57% | New | 74,735 | $2.1M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 71,606 | $2.0M |
| Qube Research & Technologies Ltd | 0.00% | Add +64.2% | 69,256 | $1.9M |
| State Street Corp. | 0.00% | Add +7.0% | 56,689 | $1.6M |
| Seven Fleet Capital Management LP | 0.49% | Reduce -23.9% | 56,147 | $1.6M |
| JPMorgan Chase & Co. | 0.00% | Add +12.1% | 53,962 | $1.4M |
| Monimus Capital Management, LP | 0.37% | Add +26.3% | 48,390 | $1.3M |
| Gsa Capital Partners LLP | 0.08% | Add +254.7% | 45,049 | $1.3M |
| Northern Trust Corp. | 0.00% | Reduce -0.5% | 41,014 | $1.1M |
| Eversept Partners, LP | 0.07% | Reduce -74.4% | 40,889 | $1.1M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Add +4.3% | 39,446 | $1.1M |
| Goldman Sachs Group Inc. | 0.00% | Add +4.1% | 36,205 | $1.0M |
| Jane Street Group, LLC | 0.00% | Reduce -35.8% | 34,499 | $957K |
| Morgan Stanley | 0.00% | Add +46.7% | 33,055 | $917K |
| Susquehanna International Group, LLP | 0.00% | Reduce -59.0% | 32,949 | $914K |
| 683 Capital Management, LLC | 0.08% | No change | 27,863 | $773K |
| Barclays PLC | 0.00% | Add +9.3% | 27,050 | $751K |
| Wellington Management Group LLP | 0.00% | New | 26,496 | $735K |
| Citadel Advisors | 0.00% | Reduce -22.6% | 25,437 | $706K |
| Squarepoint Ops LLC | 0.00% | New | 23,804 | $661K |
| Trexquant Investment LP | 0.00% | Reduce -19.6% | 22,741 | $631K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +4.6% | 21,761 | $604K |
| Two Sigma Investments, LP | 0.00% | New | 20,550 | $570K |
| ADAR1 Capital Management, LLC | 0.03% | Add +1.0% | 19,947 | $554K |
| Palumbo Wealth Management LLC | 0.13% | Reduce -47.3% | 19,643 | $545K |
| Federated Hermes, Inc. | 0.00% | Reduce -25.6% | 18,904 | $525K |
| Vanguard Portfolio Management LLC | 0.00% | — | 17,723 | $492K |
| Hudson Bay Capital Management LP | 0.00% | Add +11.6% | 16,799 | $466K |
| Renaissance Technologies | 0.00% | Add +69.4% | 15,651 | $434K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | Add +1.4% | 14,100 | $391K |
| EntryPoint Capital, LLC | 0.10% | New | 12,384 | $344K |
| Brevan Howard Capital Management LP | 0.00% | New | 11,112 | $308K |
| Jump Financial, LLC | 0.01% | New | 10,917 | $303K |
| Bank of America Corp. | 0.00% | Add +113.3% | 10,902 | $303K |
| XTX Topco Ltd | 0.01% | New | 10,785 | $299K |
| Engineers Gate Manager LP | 0.00% | Reduce -9.2% | 9,423 | $261K |
| American Century Companies Inc. | 0.00% | New | 9,154 | $254K |
| Canada Pension Plan Investment Board | 0.00% | Add +142.9% | 8,500 | $236K |
| OMERS ADMINISTRATION Corp | 0.00% | Reduce -48.1% | 8,100 | $225K |
| Virtus Investment Advisers, LLC | 0.06% | Add +2.5% | 7,553 | $210K |
| Citigroup Inc. | 0.00% | Add +194.6% | 6,483 | $180K |
| Vanguard Global Advisers, LLC | 0.00% | — | 4,615 | $128K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -10.4% | 544 | $15K |
| UBS Group AG | 0.00% | Reduce -96.3% | 364 | $10K |
| Northwestern Mutual Wealth Management Co. | 0.00% | No change | 260 | $7K |
| Aquatic Capital Management LLC | 0.00% | New | 220 | $6K |
| Rhumbline Advisers | 0.00% | No change | 190 | $5K |
| BNP Paribas Financial Markets | 0.00% | Add +7350.0% | 149 | $4K |
| Accent Capital Management, LLC | 0.00% | New | 142 | $4K |
| Osaic Holdings, Inc. | 0.00% | No change | 100 | $3K |
| US Bancorp \de | 0.00% | No change | 59 | $2K |
| Fifth Third Bancorp | 0.00% | New | 57 | $2K |
| EverSource Wealth Advisors, LLC | 0.00% | No change | 55 | $2K |
| Allworth Financial LP | 0.00% | Reduce -9.4% | 29 | $805 |
| Royal Bank of Canada | 0.00% | New | 16 | $0 |
"% of holder's portfolio" is ASMB's weight in each manager's 13F, not the share of Assembly Biosciences Inc. the manager owns.