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, Q3 2021
Institutional positions in Assembly Biosciences, Inc. as of Sep 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
- 65
- −26 vs. Q2 2021
- Shares held
- 22.7M
- −4.39M (−16.2%) vs. Q2 2021
- Total value
- $79.0M
- −$26.1M (−24.8%) vs. Q2 2021
- New holders
- 3
- 25 more added
- Sold out
- 29
- 26 more reduced
Compare with Q2 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, Q3 2021
Shares, value and share of portfolio for each institution holding Assembly Biosciences, Inc.; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Satter Management Co., L.P. | 2,227,500 | $7.75M | 5.31% | 00.0% | Unchanged |
| Armistice Capital, LLC | 2,208,000 | $7.68M | 0.19% | −16,000−0.7% | Reduced |
| BlackRock Inc. | 1,969,977 | $6.86M | 0.00% | +57,883+3.0% | Added |
| Vanguard Group Inc | 1,903,733 | $6.63M | 0.00% | +20,089+1.1% | Added |
| Platinum Investment Management Ltd | 1,653,009 | $5.75M | 0.16% | 00.0% | Unchanged |
| Boxer Capital, LLC | 1,500,000 | $5.22M | 0.18% | 00.0% | Unchanged |
| Candriam Luxembourg S.C.A. | 1,468,846 | $5.11M | 0.03% | +355,092+31.9% | Added |
| Acadian Asset Management LLC | 1,412,727 | $4.91M | 0.02% | −154,130−9.8% | Reduced |
| Soleus Capital Management, L.P. | 1,122,000 | $3.90M | 0.61% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 850,000 | $2.96M | 0.04% | +100,000+13.3% | Added |
| Citadel Advisors LLC | 846,324 | $2.94M | 0.00% | +33,633+4.1% | Added |
| Franklin Resources Inc | 584,688 | $2.04M | 0.00% | +56,000+10.6% | Added |
| Federated Hermes, Inc. | 542,401 | $1.89M | 0.00% | +18,719+3.6% | Added |
| Geode Capital Management, LLC | 525,263 | $1.83M | 0.00% | +52,960+11.2% | Added |
| Dimensional Fund Advisors LP | 359,315 | $1.25M | 0.00% | −109,878−23.4% | Reduced |
| Eversept Partners, LP | 350,000 | $1.22M | 0.10% | +350,000 | New |
| Two Sigma Advisers, LP | 348,700 | $1.21M | 0.00% | −408,500−53.9% | Reduced |
| Millennium Management LLC | 285,428 | $993.0K | 0.00% | −246,899−46.4% | Reduced |
| Prosight Management, LP | 265,634 | $924.0K | 0.54% | +116,544+78.2% | Added |
| Ikarian Capital, LLC | 214,861 | $747.0K | 0.17% | +142,393+196.5% | Added |
| Barclays PLC | 212,980 | $742.0K | 0.00% | +50,830+31.3% | Added |
| Jacobs Levy Equity Management, Inc | 200,553 | $698.0K | 0.00% | −19,946−9.0% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 156,415 | $544.0K | 0.00% | +4,738+3.1% | Added |
| UBS Group AG | 143,633 | $500.0K | 0.00% | +1,486+1.0% | Added |
| Goldman Sachs Group Inc | 131,367 | $457.0K | 0.00% | −58,354−30.8% | Reduced |
| Renaissance Technologies LLC | 130,600 | $454.0K | 0.00% | −225,241−63.3% | Reduced |
| State Street Corp | 125,623 | $437.0K | 0.00% | −44,800−26.3% | Reduced |
| Northern Trust Corp | 106,676 | $371.0K | 0.00% | +4,513+4.4% | Added |
| IndexIQ Advisors LLC | 97,739 | $340.0K | 0.01% | +9,790+11.1% | Added |
| Russell Investments Group, Ltd. | 87,636 | $304.0K | 0.00% | +36,904+72.7% | Added |
| Walleye Capital LLC | 71,175 | $248.0K | 0.01% | +71,175 | New |
| Caption Management, LLC | 67,700 | $236.0K | 0.02% | −22,300−24.8% | Reduced |
| Morgan Stanley | 56,989 | $198.0K | 0.00% | −47,411−45.4% | Reduced |
| Invesco Ltd. | 49,436 | $172.0K | 0.00% | +1,533+3.2% | Added |
| Susquehanna International Group, LLP | 35,893 | $125.0K | 0.00% | −44,595−55.4% | Reduced |
| Bank of America Corp | 34,933 | $121.0K | 0.00% | −19,971−36.4% | Reduced |
| Marquette Asset Management, LLC | 27,641 | $96.0K | 0.02% | +4,950+21.8% | Added |
| Bridgeway Capital Management, LLC | 26,300 | $92.0K | 0.00% | −37,700−58.9% | Reduced |
| Valeo Financial Advisors, LLC | 25,500 | $89.0K | 0.01% | 00.0% | Unchanged |
| GAM Holding AG | 24,100 | $84.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 22,851 | $79.0K | 0.00% | +3,051+15.4% | Added |
| Boothbay Fund Management, LLC | 21,408 | $74.0K | 0.00% | +263+1.2% | Added |
| New York Life Investments Alternatives | 20,909 | $73.0K | 0.05% | +9,585+84.6% | Added |
| Commonwealth Equity Services, LLC | 20,299 | $70.0K | 0.00% | +1,000+5.2% | Added |
| ExodusPoint Capital Management, LP | 19,420 | $68.0K | 0.00% | −55,010−73.9% | Reduced |
| Simplex Trading, LLC | 17,592 | $67.0K | 0.00% | +200+1.1% | Added |
| Cubist Systematic Strategies, LLC | 18,854 | $66.0K | 0.00% | −14,423−43.3% | Reduced |
| Walleye Trading LLC | 17,656 | $61.0K | 0.00% | +17,656 | New |
| ETF Managers Group, LLC | 16,421 | $57.0K | 0.00% | +4,573+38.6% | Added |
| Diversified Trust Co | 16,198 | $56.0K | 0.00% | −14,150−46.6% | Reduced |
| Bank of New York Mellon Corp | 15,866 | $55.0K | 0.00% | −7,130−31.0% | Reduced |
| Ameriprise Financial Inc | 14,625 | $51.0K | 0.00% | −1,200−7.6% | Reduced |
| RBF Capital, LLC | 14,741 | $51.0K | 0.00% | 00.0% | Unchanged |
| Bridgefront Capital, LLC | 10,137 | $35.0K | 0.04% | −1,366−11.9% | Reduced |
| JPMorgan Chase & Co | 2,965 | $10.0K | 0.00% | −52,557−94.7% | Reduced |
| Citigroup Inc | 2,299 | $8.00K | 0.00% | −2,557−52.7% | Reduced |
| Macquarie Group Ltd | 912 | $3.00K | 0.00% | 00.0% | Unchanged |
| Penserra Capital Management LLC | 1,030 | $3.00K | 0.00% | +115+12.6% | Added |
| Nisa Investment Advisors, LLC | 695 | $2.00K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 500 | $2.00K | 0.00% | −1−0.2% | Reduced |
| BNP Paribas Arbitrage, SA | 39 | $136 | 0.00% | −86−68.8% | Reduced |
| Wells Fargo & Company | 126 | $0 | 0.00% | −123,325−99.9% | Reduced |
| Daiwa Securities Group Inc. | 72 | $0 | 0.00% | 00.0% | Unchanged |
| Cutler Group LP | 200 | $0 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 19 | $0 | 0.00% | −38−66.7% | Reduced |
| Baker Bros. Advisors LP | 0 | $0 | 0.00% | −2,108,621−100.0% | Sold out |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −646,318−100.0% | Sold out |
| Vida Ventures Advisors, LLC | 0 | $0 | 0.00% | −384,635−100.0% | Sold out |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −194,046−100.0% | Sold out |
| Ergoteles LLC | 0 | $0 | 0.00% | −108,600−100.0% | Sold out |
| Raffles Associates LP | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Parametric Portfolio Associates LLC | 0 | $0 | 0.00% | −89,340−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −89,502−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −86,901−100.0% | Sold out |
| Tibra Equities Europe Ltd | 0 | $0 | 0.00% | −72,700−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −64,020−100.0% | Sold out |
| Wellington Management Group LLP | 0 | $0 | 0.00% | −46,567−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −36,109−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −31,800−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −32,619−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −20,507−100.0% | Sold out |
| Blair William & Co | 0 | $0 | 0.00% | −16,000−100.0% | Sold out |
| LMR Partners LLP | 0 | $0 | 0.00% | −14,225−100.0% | Sold out |
| Pinnacle Wealth Planning Services, Inc. | 0 | $0 | 0.00% | −10,839−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −10,319−100.0% | Sold out |
| SG3 Management, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −7,597−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −2,100−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −1,094−100.0% | Sold out |
| Parallel Advisors, LLC | 0 | $0 | 0.00% | −482−100.0% | Sold out |
| Evoke Wealth, LLC | 0 | $0 | 0.00% | −496−100.0% | Sold out |
| The PNC Financial Services Group, Inc. | 0 | $0 | 0.00% | −239−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −264−100.0% | Sold out |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −162−100.0% | Sold out |