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, Q4 2023
Institutional positions in Assembly Biosciences, Inc. as of Dec 31, 2023. 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
- 45
- +13 vs. Q3 2023
- Shares held
- 8.68M
- −1.06M (−10.9%) vs. Q3 2023
- Total value
- $7.12M
- −$1.50M (−17.4%) vs. Q3 2023
- New holders
- 17
- 9 more added
- Sold out
- 4
- 7 more reduced
Compare with Q3 2023: 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, Q4 2023
Shares, value and share of portfolio for each institution holding Assembly Biosciences, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 2,339,088 | $1.92M | 0.00% | +99,092+4.4% | Added |
| Millennium Management LLC | 1,450,049 | $1.19M | 0.00% | +40,022+2.8% | Added |
| BlackRock Inc. | 947,984 | $777.4K | 0.00% | −114,703−10.8% | Reduced |
| Anson Funds Management LP | 719,470 | $590.0K | 0.11% | +719,470 | New |
| Geode Capital Management, LLC | 612,006 | $502.0K | 0.00% | +126,742+26.1% | Added |
| Renaissance Technologies LLC | 430,517 | $353.0K | 0.00% | −63,174−12.8% | Reduced |
| Federated Hermes, Inc. | 304,735 | $249.9K | 0.00% | −37,123−10.9% | Reduced |
| Acuitas Investments, LLC | 265,585 | $217.8K | 0.11% | +265,585 | New |
| Bridgeway Capital Management, LLC | 174,000 | $142.7K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 145,335 | $119.2K | 0.00% | 00.0% | Unchanged |
| FMR LLC | 136,337 | $111.8K | 0.00% | −575−0.4% | Reduced |
| Two Sigma Investments, LP | 135,048 | $110.8K | 0.00% | +135,048 | New |
| Northern Trust Corp | 131,182 | $107.6K | 0.00% | +23,066+21.3% | Added |
| Citadel Advisors LLC | 124,914 | $102.4K | 0.00% | −13,650−9.9% | Reduced |
| Amundi | 95,210 | $78.2K | 0.00% | +95,210 | New |
| Susquehanna International Group, LLP | 71,770 | $58.9K | 0.00% | +71,770 | New |
| Acadian Asset Management LLC | 70,420 | $57.0K | 0.00% | −13,050−15.6% | Reduced |
| Franklin Resources Inc | 65,392 | $53.6K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 61,320 | $50.3K | 0.00% | +16,595+37.1% | Added |
| Marquette Asset Management, LLC | 54,464 | $44.7K | 0.01% | +54,464 | New |
| Jane Street Group, LLC | 44,898 | $36.8K | 0.00% | +44,898 | New |
| XTX Topco Ltd | 41,453 | $34.0K | 0.01% | +16,216+64.3% | Added |
| Barclays PLC | 35,928 | $29.5K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 33,200 | $27.2K | 0.00% | +20,200+155.4% | Added |
| Charles Schwab Investment Management Inc | 32,452 | $26.6K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 30,518 | $25.0K | 0.00% | +30,518 | New |
| UBS Group AG | 24,164 | $19.8K | 0.00% | +24,164 | New |
| Commonwealth Equity Services, LLC | 16,621 | $14.0K | 0.00% | −1,264−7.1% | Reduced |
| Bank of New York Mellon Corp | 15,866 | $13.0K | 0.00% | 00.0% | Unchanged |
| RBF Capital, LLC | 14,741 | $12.1K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 12,983 | $10.6K | 0.00% | +12,983 | New |
| HSBC Holdings PLC | 11,413 | $9.42K | 0.00% | 00.0% | Unchanged |
| Palumbo Wealth Management LLC | 10,075 | $8.26K | 0.00% | +10,075 | New |
| Engineers Gate Manager LP | 10,071 | $8.26K | 0.00% | 00.0% | Unchanged |
| Clear Street Markets LLC | 5,000 | $4.00K | 0.00% | +5,000 | New |
| Rhumbline Advisers | 2,402 | $1.97K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 664 | $545 | 0.00% | +664 | New |
| Wells Fargo & Company | 506 | $415 | 0.00% | +122+31.8% | Added |
| JPMorgan Chase & Co | 188 | $154 | 0.00% | +33+21.3% | Added |
| Qube Research & Technologies Ltd | 43 | $35 | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 32 | $26 | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 29 | $24 | 0.00% | +29 | New |
| Advisory Services Network, LLC | 1 | $1 | 0.00% | +1 | New |
| Royal Bank of Canada | 546 | $0 | 0.00% | +546 | New |
| Simplex Trading, LLC | 73 | $0 | 0.00% | +73 | New |
| Satter Management Co., L.P. | 0 | $0 | 0.00% | −2,227,500−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −399,578−100.0% | Sold out |
| Baker Avenue Asset Management, LP | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −500−100.0% | Sold out |