Assembly Biosciences, Inc.
ASMB- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001426800
In the last 90 days, Assembly Biosciences, Inc. insiders filed 0 open-market purchases and 4 sales; 93 institutions reported holding it in 13F filings for Q2 2026, worth $514.8M in total; no superinvestor holds it.
13F holders, Q1 2024
Institutional positions in Assembly Biosciences, Inc. as of Mar 31, 2024. 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
- 24
- −21 vs. Q4 2023
- Shares held
- 647.3K
- −73.4K (−10.2%) vs. Q4 2023Converted for a 1-for-12 split
- Total value
- $8.61M
- +$1.52M (+21.4%) vs. Q4 2023
- New holders
- 0
- 9 more added
- Sold out
- 21
- 8 more reduced
Compare with Q4 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 | 93 | $514.8M |
| Q1 2026 | 76 | $376.4M |
| Q4 2025 | 70 | $466.7M |
| Q3 2025 | 58 | $324.9M |
| Q2 2025 | 34 | $57.1M |
| Q1 2025 | 38 | $30.4M |
| Q4 2024 | 36 | $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, Q1 2024
Shares, value and share of portfolio for each institution holding Assembly Biosciences, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 196,368 | $2.61M | 0.00% | +1,444+0.7% | AddedConverted for a 1-for-12 split |
| Millennium Management LLC | 124,922 | $1.66M | 0.00% | +4,085+3.4% | AddedConverted for a 1-for-12 split |
| BlackRock Inc. | 77,961 | $1.04M | 0.00% | −1,038−1.3% | ReducedConverted for a 1-for-12 split |
| Geode Capital Management, LLC | 52,197 | $694.4K | 0.00% | +1,197+2.3% | AddedConverted for a 1-for-12 split |
| Acuitas Investments, LLC | 49,732 | $661.4K | 0.33% | +27,600+124.7% | AddedConverted for a 1-for-12 split |
| Renaissance Technologies LLC | 39,460 | $525.0K | 0.00% | +3,584+10.0% | AddedConverted for a 1-for-12 split |
| Federated Hermes, Inc. | 25,394 | $337.7K | 0.00% | 00.0% | UnchangedConverted for a 1-for-12 split |
| Bridgeway Capital Management, LLC | 14,500 | $192.8K | 0.00% | 00.0% | UnchangedConverted for a 1-for-12 split |
| State Street Corp | 12,109 | $161.1K | 0.00% | 00.0% | UnchangedConverted for a 1-for-12 split |
| FMR LLC | 11,318 | $150.5K | 0.00% | 00.0% | UnchangedConverted for a 1-for-12 split |
| Northern Trust Corp | 10,559 | $140.4K | 0.00% | −373−3.4% | ReducedConverted for a 1-for-12 split |
| Marquette Asset Management, LLC | 9,016 | $119.9K | 0.02% | +4,477+98.6% | AddedConverted for a 1-for-12 split |
| Amundi | 7,934 | $105.8K | 0.00% | 00.0% | UnchangedConverted for a 1-for-12 split |
| Acadian Asset Management LLC | 5,868 | $78.0K | 0.00% | 00.0% | UnchangedConverted for a 1-for-12 split |
| UBS Group AG | 3,235 | $43.0K | 0.00% | +1,221+60.7% | AddedConverted for a 1-for-12 split |
| Barclays PLC | 2,994 | $39.8K | 0.00% | 00.0% | UnchangedConverted for a 1-for-12 split |
| Morgan Stanley | 2,472 | $32.9K | 0.00% | −83−3.2% | ReducedConverted for a 1-for-12 split |
| Tower Research Capital LLC (TRC) | 857 | $11.4K | 0.00% | −225−20.8% | ReducedConverted for a 1-for-12 split |
| Rhumbline Advisers | 199 | $2.65K | 0.00% | −1−0.6% | ReducedConverted for a 1-for-12 split |
| Royal Bank of Canada | 79 | $1.00K | 0.00% | +34+73.6% | AddedConverted for a 1-for-12 split |
| EverSource Wealth Advisors, LLC | 55 | $686 | 0.00% | −0−0.6% | ReducedConverted for a 1-for-12 split |
| Wells Fargo & Company | 44 | $585 | 0.00% | +2+4.3% | AddedConverted for a 1-for-12 split |
| JPMorgan Chase & Co | 7 | $93 | 0.00% | −1−10.6% | ReducedConverted for a 1-for-12 split |
| Qube Research & Technologies Ltd | 3 | $40 | 0.00% | −1−16.3% | ReducedConverted for a 1-for-12 split |
| Anson Funds Management LP | 0 | $0 | 0.00% | −59,956−100.0% | Sold outConverted for a 1-for-12 split |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −11,254−100.0% | Sold outConverted for a 1-for-12 split |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −10,409−100.0% | Sold outConverted for a 1-for-12 split |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −5,981−100.0% | Sold outConverted for a 1-for-12 split |
| Franklin Resources Inc | 0 | $0 | 0.00% | −5,449−100.0% | Sold outConverted for a 1-for-12 split |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −3,741−100.0% | Sold outConverted for a 1-for-12 split |
| XTX Topco Ltd | 0 | $0 | 0.00% | −3,454−100.0% | Sold outConverted for a 1-for-12 split |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −2,767−100.0% | Sold outConverted for a 1-for-12 split |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −2,704−100.0% | Sold outConverted for a 1-for-12 split |
| HRT Financial LP | 0 | $0 | 0.00% | −2,543−100.0% | Sold outConverted for a 1-for-12 split |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −1,385−100.0% | Sold outConverted for a 1-for-12 split |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −1,322−100.0% | Sold outConverted for a 1-for-12 split |
| RBF Capital, LLC | 0 | $0 | 0.00% | −1,228−100.0% | Sold outConverted for a 1-for-12 split |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −951−100.0% | Sold outConverted for a 1-for-12 split |
| Palumbo Wealth Management LLC | 0 | $0 | 0.00% | −840−100.0% | Sold outConverted for a 1-for-12 split |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −839−100.0% | Sold outConverted for a 1-for-12 split |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −417−100.0% | Sold outConverted for a 1-for-12 split |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −3−100.0% | Sold outConverted for a 1-for-12 split |
| Bank of America Corp | 0 | $0 | 0.00% | −2−100.0% | Sold outConverted for a 1-for-12 split |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −0−100.0% | Sold outConverted for a 1-for-12 split |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −6−100.0% | Sold outConverted for a 1-for-12 split |