Assembly Biosciences, Inc.
ASMB- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001426800
No open-market purchases or sales by Assembly Biosciences, Inc. insiders were filed in the last 90 days; 92 institutions reported holding it in 13F filings for Q2 2026, worth $514.8M in total; no superinvestor holds it.
13F holders, Q2 2021
Institutional positions in Assembly Biosciences, Inc. as of Jun 30, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 91
- −16 vs. Q1 2021
- Shares held
- 27.1M
- −1.65M (−5.7%) vs. Q1 2021
- Total value
- $105.1M
- −$28.5M (−21.3%) vs. Q1 2021
- New holders
- 14
- 30 more added
- Sold out
- 30
- 36 more reduced
Compare with Q1 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ASMB on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 92 | $514.8M |
| Q1 2026 | 75 | $381.5M |
| Q4 2025 | 69 | $466.7M |
| Q3 2025 | 57 | $324.9M |
| Q2 2025 | 33 | $57.1M |
| Q1 2025 | 37 | $30.4M |
| Q4 2024 | 35 | $50.3M |
| Q3 2024 | 30 | $15.6M |
| Q2 2024 | 27 | $16.1M |
| Q1 2024 | 24 | $8.68M |
| Q4 2023 | 45 | $7.12M |
| Q3 2023 | 32 | $8.62M |
| Q2 2023 | 32 | $12.0M |
| Q1 2023 | 38 | $11.1M |
| Q4 2022 | 40 | $18.4M |
| Q3 2022 | 50 | $27.2M |
| Q2 2022 | 54 | $36.1M |
| Q1 2022 | 54 | $39.3M |
| Q4 2021 | 62 | $54.3M |
| Q3 2021 | 65 | $79.0M |
| Q2 2021 | 91 | $105.1M |
| Q1 2021 | 107 | $133.6M |
Institutions, Q2 2021
Shares, value and share of portfolio for each institution holding Assembly Biosciences, Inc.; share changes are against Q1 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Satter Management Co., L.P. | 2,227,500 | $8.64M | 4.69% | 00.0% | Unchanged |
| Armistice Capital, LLC | 2,224,000 | $8.63M | 0.23% | −12,000−0.5% | Reduced |
| Baker Bros. Advisors LP | 2,108,621 | $8.18M | 0.04% | +567,203+36.8% | Added |
| BlackRock Inc. | 1,912,094 | $7.42M | 0.00% | −1,379,582−41.9% | Reduced |
| Vanguard Group Inc | 1,883,644 | $7.31M | 0.00% | −122,737−6.1% | Reduced |
| Platinum Investment Management Ltd | 1,653,009 | $6.41M | 0.15% | +221,889+15.5% | Added |
| Acadian Asset Management LLC | 1,566,857 | $6.08M | 0.02% | +498,331+46.6% | Added |
| Boxer Capital, LLC | 1,500,000 | $5.82M | 0.21% | 00.0% | Unchanged |
| Soleus Capital Management, L.P. | 1,122,000 | $4.35M | 0.67% | 00.0% | Unchanged |
| Candriam Luxembourg S.C.A. | 1,113,754 | $4.32M | 0.03% | −22,791−2.0% | Reduced |
| Citadel Advisors LLC | 812,691 | $3.15M | 0.00% | −72,346−8.2% | Reduced |
| Two Sigma Advisers, LP | 757,200 | $2.94M | 0.01% | +53,000+7.5% | Added |
| Hudson Bay Capital Management LP | 750,000 | $2.91M | 0.04% | +130,000+21.0% | Added |
| Two Sigma Investments, LP | 646,318 | $2.51M | 0.01% | +92,523+16.7% | Added |
| Millennium Management LLC | 532,327 | $2.06M | 0.00% | +445,090+510.2% | Added |
| Franklin Resources Inc | 528,688 | $2.05M | 0.00% | −381,389−41.9% | Reduced |
| Federated Hermes, Inc. | 523,682 | $2.03M | 0.00% | +520,344+15,588.5% | Added |
| Geode Capital Management, LLC | 472,303 | $1.83M | 0.00% | −184,793−28.1% | Reduced |
| Dimensional Fund Advisors LP | 469,193 | $1.82M | 0.00% | −28,398−5.7% | Reduced |
| Vida Ventures Advisors, LLC | 384,635 | $1.49M | 0.37% | −65,365−14.5% | Reduced |
| Renaissance Technologies LLC | 355,841 | $1.38M | 0.00% | −221,494−38.4% | Reduced |
| Jacobs Levy Equity Management, Inc | 220,499 | $856.0K | 0.01% | −36,416−14.2% | Reduced |
| Charles Schwab Investment Management Inc | 194,046 | $753.0K | 0.00% | −28,675−12.9% | Reduced |
| Goldman Sachs Group Inc | 189,721 | $736.0K | 0.00% | +30,140+18.9% | Added |
| State Street Corp | 170,423 | $661.0K | 0.00% | −442,313−72.2% | Reduced |
| Barclays PLC | 162,150 | $628.0K | 0.00% | +9,258+6.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 151,677 | $589.0K | 0.00% | +12,932+9.3% | Added |
| Prosight Management, LP | 149,090 | $578.0K | 0.37% | +92,590+163.9% | Added |
| UBS Group AG | 142,147 | $552.0K | 0.00% | +126,565+812.3% | Added |
| Wells Fargo & Company | 123,451 | $479.0K | 0.00% | +115,558+1,464.1% | Added |
| Ergoteles LLC | 108,600 | $421.0K | 0.01% | +108,600 | New |
| Morgan Stanley | 104,400 | $405.0K | 0.00% | +95,635+1,091.1% | Added |
| Northern Trust Corp | 102,163 | $396.0K | 0.00% | −268,964−72.5% | Reduced |
| Raffles Associates LP | 100,000 | $388.0K | 0.33% | +50,000+100.0% | Added |
| Caption Management, LLC | 90,000 | $349.0K | 0.03% | +90,000 | New |
| Occudo Quantitative Strategies LP | 89,502 | $347.0K | 0.05% | −7,700−7.9% | Reduced |
| Parametric Portfolio Associates LLC | 89,340 | $347.0K | 0.00% | +46,070+106.5% | Added |
| IndexIQ Advisors LLC | 87,949 | $341.0K | 0.01% | −1,242−1.4% | Reduced |
| HRT Financial LP | 86,901 | $337.0K | 0.00% | +55,421+176.1% | Added |
| Susquehanna International Group, LLP | 80,488 | $312.0K | 0.00% | +46,823+139.1% | Added |
| ExodusPoint Capital Management, LP | 74,430 | $289.0K | 0.00% | +59,476+397.7% | Added |
| Tibra Equities Europe Ltd | 72,700 | $282.0K | 0.09% | +72,700 | New |
| Ikarian Capital, LLC | 72,468 | $281.0K | 0.05% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 64,000 | $248.0K | 0.00% | −86,000−57.3% | Reduced |
| Virtu Financial LLC | 64,020 | $248.0K | 0.02% | +64,020 | New |
| JPMorgan Chase & Co | 55,522 | $216.0K | 0.00% | −224,602−80.2% | Reduced |
| Bank of America Corp | 54,904 | $213.0K | 0.00% | +23,662+75.7% | Added |
| Russell Investments Group, Ltd. | 50,732 | $195.0K | 0.00% | −81,630−61.7% | Reduced |
| Invesco Ltd. | 47,903 | $186.0K | 0.00% | −6,976−12.7% | Reduced |
| Wellington Management Group LLP | 46,567 | $180.0K | 0.00% | −2,723−5.5% | Reduced |
| Jane Street Group, LLC | 36,109 | $140.0K | 0.00% | +22,710+169.5% | Added |
| Cubist Systematic Strategies, LLC | 33,277 | $129.0K | 0.00% | −27,648−45.4% | Reduced |
| Engineers Gate Manager LP | 31,800 | $123.0K | 0.01% | −54,419−63.1% | Reduced |
| SEI Investments Co | 32,619 | $120.0K | 0.00% | −14,025−30.1% | Reduced |
| Diversified Trust Co | 30,348 | $118.0K | 0.00% | +9,100+42.8% | Added |
| Valeo Financial Advisors, LLC | 25,500 | $99.0K | 0.01% | −6,164−19.5% | Reduced |
| GAM Holding AG | 24,100 | $94.0K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 22,996 | $90.0K | 0.00% | −103,669−81.8% | Reduced |
| Marquette Asset Management, LLC | 22,691 | $88.0K | 0.02% | +22,691 | New |
| Boothbay Fund Management, LLC | 21,145 | $82.0K | 0.00% | +9,005+74.2% | Added |
| Quantbot Technologies LP | 20,507 | $79.0K | 0.01% | +20,507 | New |
| Tower Research Capital LLC (TRC) | 19,800 | $77.0K | 0.00% | +16,694+537.5% | Added |
| Commonwealth Equity Services, LLC | 19,299 | $74.0K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 17,392 | $67.0K | 0.00% | −4,416−20.2% | Reduced |
| Blair William & Co | 16,000 | $62.0K | 0.00% | −500−3.0% | Reduced |
| Ameriprise Financial Inc | 15,825 | $61.0K | 0.00% | −1,135−6.7% | Reduced |
| RBF Capital, LLC | 14,741 | $57.0K | 0.00% | 00.0% | Unchanged |
| LMR Partners LLP | 14,225 | $55.0K | 0.00% | +14,225 | New |
| ETF Managers Group, LLC | 11,848 | $46.0K | 0.00% | +122+1.0% | Added |
| Bridgefront Capital, LLC | 11,503 | $45.0K | 0.02% | +11,503 | New |
| New York Life Investments Alternatives | 11,324 | $44.0K | 0.03% | +11,324 | New |
| Pinnacle Wealth Planning Services, Inc. | 10,839 | $42.0K | 0.01% | +10,839 | New |
| Royal Bank of Canada | 10,319 | $40.0K | 0.00% | +6,703+185.4% | Added |
| SG3 Management, LLC | 10,000 | $39.0K | 0.02% | +10,000 | New |
| Group One Trading, L.P. | 7,597 | $29.0K | 0.00% | −1,926−20.2% | Reduced |
| Citigroup Inc | 4,856 | $19.0K | 0.00% | +1,770+57.4% | Added |
| Legal & General Group Plc | 2,100 | $8.00K | 0.00% | −4,262−67.0% | Reduced |
| Panagora Asset Management Inc | 1,094 | $4.00K | 0.00% | −186,860−99.4% | Reduced |
| Macquarie Group Ltd | 912 | $4.00K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 695 | $3.00K | 0.00% | 00.0% | Unchanged |
| Penserra Capital Management LLC | 915 | $3.00K | 0.00% | +60+7.0% | Added |
| FMR LLC | 501 | $2.00K | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 482 | $2.00K | 0.00% | +482 | New |
| Evoke Wealth, LLC | 496 | $2.00K | 0.00% | +496 | New |
| New York State Common Retirement Fund | 264 | $1.00K | 0.00% | −20,236−98.7% | Reduced |
| Captrust Financial Advisors | 162 | $1.00K | 0.00% | −255−61.2% | Reduced |
| The PNC Financial Services Group, Inc. | 239 | $1.00K | 0.00% | +217+986.4% | Added |
| BNP Paribas Arbitrage, SA | 125 | $485 | 0.00% | −9,799−98.7% | Reduced |
| Cutler Group LP | 200 | $0 | 0.00% | −500−71.4% | Reduced |
| Daiwa Securities Group Inc. | 72 | $0 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 57 | $0 | 0.00% | +57 | New |
| PDT Partners, LLC | 0 | $0 | 0.00% | −274,476−100.0% | Sold out |
| Nuveen Asset Management, LLC | 0 | $0 | 0.00% | −211,554−100.0% | Sold out |
| Walleye Capital LLC | 0 | $0 | 0.00% | −80,524−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −70,500−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −64,109−100.0% | Sold out |
| California Public Employees Retirement System | 0 | $0 | 0.00% | −62,400−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −59,743−100.0% | Sold out |
| AQR Capital Management LLC | 0 | $0 | 0.00% | −58,444−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −49,800−100.0% | Sold out |