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 | $376.4M |
| Q4 2025 | 69 | $466.7M |
| Q3 2025 | 57 | $324.9M |
| Q2 2025 | 33 | $57.0M |
| Q1 2025 | 37 | $30.4M |
| Q4 2024 | 35 | $50.3M |
| Q3 2024 | 30 | $15.5M |
| Q2 2024 | 27 | $16.1M |
| Q1 2024 | 24 | $8.61M |
| Q4 2023 | 45 | $7.09M |
| Q3 2023 | 32 | $8.44M |
| Q2 2023 | 32 | $12.0M |
| Q1 2023 | 38 | $10.1M |
| Q4 2022 | 40 | $18.4M |
| Q3 2022 | 50 | $27.2M |
| Q2 2022 | 54 | $36.1M |
| Q1 2022 | 54 | $39.3M |
| Q4 2021 | 62 | $53.8M |
| 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 |
|---|---|---|---|---|---|
| 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 |
| BNP Paribas Arbitrage, SA | 125 | $485 | 0.00% | −9,799−98.7% | Reduced |
| 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 |
| 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 |
| 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 |
| 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 |
| Legal & General Group Plc | 2,100 | $8.00K | 0.00% | −4,262−67.0% | Reduced |
| Citigroup Inc | 4,856 | $19.0K | 0.00% | +1,770+57.4% | Added |
| Group One Trading, L.P. | 7,597 | $29.0K | 0.00% | −1,926−20.2% | Reduced |
| SG3 Management, LLC | 10,000 | $39.0K | 0.02% | +10,000 | New |
| Royal Bank of Canada | 10,319 | $40.0K | 0.00% | +6,703+185.4% | Added |
| Pinnacle Wealth Planning Services, Inc. | 10,839 | $42.0K | 0.01% | +10,839 | New |
| New York Life Investments Alternatives | 11,324 | $44.0K | 0.03% | +11,324 | New |
| Bridgefront Capital, LLC | 11,503 | $45.0K | 0.02% | +11,503 | New |
| ETF Managers Group, LLC | 11,848 | $46.0K | 0.00% | +122+1.0% | Added |
| LMR Partners LLP | 14,225 | $55.0K | 0.00% | +14,225 | New |
| RBF Capital, LLC | 14,741 | $57.0K | 0.00% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 15,825 | $61.0K | 0.00% | −1,135−6.7% | Reduced |
| Blair William & Co | 16,000 | $62.0K | 0.00% | −500−3.0% | Reduced |
| Simplex Trading, LLC | 17,392 | $67.0K | 0.00% | −4,416−20.2% | Reduced |
| Commonwealth Equity Services, LLC | 19,299 | $74.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 19,800 | $77.0K | 0.00% | +16,694+537.5% | Added |
| Quantbot Technologies LP | 20,507 | $79.0K | 0.01% | +20,507 | New |
| Boothbay Fund Management, LLC | 21,145 | $82.0K | 0.00% | +9,005+74.2% | Added |
| Marquette Asset Management, LLC | 22,691 | $88.0K | 0.02% | +22,691 | New |
| Bank of New York Mellon Corp | 22,996 | $90.0K | 0.00% | −103,669−81.8% | Reduced |
| GAM Holding AG | 24,100 | $94.0K | 0.00% | 00.0% | Unchanged |
| Valeo Financial Advisors, LLC | 25,500 | $99.0K | 0.01% | −6,164−19.5% | Reduced |
| Diversified Trust Co | 30,348 | $118.0K | 0.00% | +9,100+42.8% | Added |
| SEI Investments Co | 32,619 | $120.0K | 0.00% | −14,025−30.1% | Reduced |
| Engineers Gate Manager LP | 31,800 | $123.0K | 0.01% | −54,419−63.1% | Reduced |
| Cubist Systematic Strategies, LLC | 33,277 | $129.0K | 0.00% | −27,648−45.4% | Reduced |
| Jane Street Group, LLC | 36,109 | $140.0K | 0.00% | +22,710+169.5% | Added |
| Wellington Management Group LLP | 46,567 | $180.0K | 0.00% | −2,723−5.5% | Reduced |
| Invesco Ltd. | 47,903 | $186.0K | 0.00% | −6,976−12.7% | Reduced |
| Russell Investments Group, Ltd. | 50,732 | $195.0K | 0.00% | −81,630−61.7% | Reduced |
| Bank of America Corp | 54,904 | $213.0K | 0.00% | +23,662+75.7% | Added |
| JPMorgan Chase & Co | 55,522 | $216.0K | 0.00% | −224,602−80.2% | Reduced |
| 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 |
| Ikarian Capital, LLC | 72,468 | $281.0K | 0.05% | 00.0% | Unchanged |
| Tibra Equities Europe Ltd | 72,700 | $282.0K | 0.09% | +72,700 | New |
| ExodusPoint Capital Management, LP | 74,430 | $289.0K | 0.00% | +59,476+397.7% | Added |
| Susquehanna International Group, LLP | 80,488 | $312.0K | 0.00% | +46,823+139.1% | Added |
| HRT Financial LP | 86,901 | $337.0K | 0.00% | +55,421+176.1% | Added |
| IndexIQ Advisors LLC | 87,949 | $341.0K | 0.01% | −1,242−1.4% | Reduced |
| 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 |
| Caption Management, LLC | 90,000 | $349.0K | 0.03% | +90,000 | New |
| Raffles Associates LP | 100,000 | $388.0K | 0.33% | +50,000+100.0% | Added |
| Northern Trust Corp | 102,163 | $396.0K | 0.00% | −268,964−72.5% | Reduced |
| Morgan Stanley | 104,400 | $405.0K | 0.00% | +95,635+1,091.1% | Added |
| Ergoteles LLC | 108,600 | $421.0K | 0.01% | +108,600 | New |
| Wells Fargo & Company | 123,451 | $479.0K | 0.00% | +115,558+1,464.1% | Added |
| UBS Group AG | 142,147 | $552.0K | 0.00% | +126,565+812.3% | Added |
| Prosight Management, LP | 149,090 | $578.0K | 0.37% | +92,590+163.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 151,677 | $589.0K | 0.00% | +12,932+9.3% | Added |
| Barclays PLC | 162,150 | $628.0K | 0.00% | +9,258+6.1% | Added |
| State Street Corp | 170,423 | $661.0K | 0.00% | −442,313−72.2% | Reduced |
| Goldman Sachs Group Inc | 189,721 | $736.0K | 0.00% | +30,140+18.9% | Added |
| Charles Schwab Investment Management Inc | 194,046 | $753.0K | 0.00% | −28,675−12.9% | Reduced |
| Jacobs Levy Equity Management, Inc | 220,499 | $856.0K | 0.01% | −36,416−14.2% | Reduced |
| Renaissance Technologies LLC | 355,841 | $1.38M | 0.00% | −221,494−38.4% | Reduced |
| Vida Ventures Advisors, LLC | 384,635 | $1.49M | 0.37% | −65,365−14.5% | Reduced |
| Dimensional Fund Advisors LP | 469,193 | $1.82M | 0.00% | −28,398−5.7% | Reduced |
| Geode Capital Management, LLC | 472,303 | $1.83M | 0.00% | −184,793−28.1% | Reduced |
| Federated Hermes, Inc. | 523,682 | $2.03M | 0.00% | +520,344+15,588.5% | Added |
| Franklin Resources Inc | 528,688 | $2.05M | 0.00% | −381,389−41.9% | Reduced |
| Millennium Management LLC | 532,327 | $2.06M | 0.00% | +445,090+510.2% | Added |
| Two Sigma Investments, LP | 646,318 | $2.51M | 0.01% | +92,523+16.7% | Added |
| Hudson Bay Capital Management LP | 750,000 | $2.91M | 0.04% | +130,000+21.0% | Added |
| Two Sigma Advisers, LP | 757,200 | $2.94M | 0.01% | +53,000+7.5% | Added |
| Citadel Advisors LLC | 812,691 | $3.15M | 0.00% | −72,346−8.2% | Reduced |
| Candriam Luxembourg S.C.A. | 1,113,754 | $4.32M | 0.03% | −22,791−2.0% | Reduced |
| Soleus Capital Management, L.P. | 1,122,000 | $4.35M | 0.67% | 00.0% | Unchanged |
| Boxer Capital, LLC | 1,500,000 | $5.82M | 0.21% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 1,566,857 | $6.08M | 0.02% | +498,331+46.6% | Added |
| Platinum Investment Management Ltd | 1,653,009 | $6.41M | 0.15% | +221,889+15.5% | Added |
| Vanguard Group Inc | 1,883,644 | $7.31M | 0.00% | −122,737−6.1% | Reduced |
| BlackRock Inc. | 1,912,094 | $7.42M | 0.00% | −1,379,582−41.9% | Reduced |
| Baker Bros. Advisors LP | 2,108,621 | $8.18M | 0.04% | +567,203+36.8% | Added |
| Armistice Capital, LLC | 2,224,000 | $8.63M | 0.23% | −12,000−0.5% | Reduced |
| Satter Management Co., L.P. | 2,227,500 | $8.64M | 4.69% | 00.0% | Unchanged |
| 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 |