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, Q1 2023
Institutional positions in Assembly Biosciences, Inc. as of Mar 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
- 38
- −2 vs. Q4 2022
- Shares held
- 13.2M
- −1.03M (−7.2%) vs. Q4 2022
- Total value
- $11.1M
- −$7.38M (−40.0%) vs. Q4 2022
- New holders
- 3
- 10 more added
- Sold out
- 5
- 14 more reduced
Compare with Q4 2022: 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, Q1 2023
Shares, value and share of portfolio for each institution holding Assembly Biosciences, Inc.; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 2,273,762 | $1.91M | 0.00% | +80,800+3.7% | Added |
| Satter Management Co., L.P. | 2,227,500 | $1.87M | 2.47% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 1,900,000 | $1.60M | 0.01% | +875,000+85.4% | Added |
| Millennium Management LLC | 1,449,987 | $1.22M | 0.00% | −47,619−3.2% | Reduced |
| BlackRock Inc. | 1,086,563 | $913.1K | 0.00% | −48,543−4.3% | Reduced |
| Platinum Investment Management Ltd | 890,736 | $748.6K | 0.03% | −204,034−18.6% | Reduced |
| Renaissance Technologies LLC | 765,800 | $644.0K | 0.00% | +262,416+52.1% | Added |
| Geode Capital Management, LLC | 452,628 | $380.4K | 0.00% | 00.0% | Unchanged |
| Federated Hermes, Inc. | 363,023 | $304.9K | 0.00% | −10,613−2.8% | Reduced |
| FMR LLC | 315,400 | $265.1K | 0.00% | +168,934+115.3% | Added |
| Dimensional Fund Advisors LP | 284,185 | $238.7K | 0.00% | −38,503−11.9% | Reduced |
| Bridgeway Capital Management, LLC | 174,000 | $146.2K | 0.00% | −14,200−7.5% | Reduced |
| Acadian Asset Management LLC | 157,549 | $132.0K | 0.00% | −99,552−38.7% | Reduced |
| State Street Corp | 145,335 | $122.1K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 140,953 | $118.5K | 0.00% | +32,200+29.6% | Added |
| Northern Trust Corp | 98,400 | $82.7K | 0.00% | +6,928+7.6% | Added |
| Franklin Resources Inc | 82,645 | $69.5K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 44,428 | $37.3K | 0.00% | +13,050+41.6% | Added |
| Two Sigma Investments, LP | 38,303 | $32.2K | 0.00% | +38,303 | New |
| Barclays PLC | 35,928 | $30.2K | 0.00% | 00.0% | Unchanged |
| Two Sigma Advisers, LP | 33,100 | $27.8K | 0.00% | −4,300−11.5% | Reduced |
| Charles Schwab Investment Management Inc | 32,452 | $27.3K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 31,160 | $26.0K | 0.00% | −20,057−39.2% | Reduced |
| Jane Street Group, LLC | 24,305 | $20.4K | 0.00% | −52,656−68.4% | Reduced |
| Commonwealth Equity Services, LLC | 18,148 | $15.0K | 0.00% | −100−0.5% | Reduced |
| Susquehanna International Group, LLP | 17,167 | $14.4K | 0.00% | −4,088−19.2% | Reduced |
| ETF Managers Group, LLC | 16,315 | $13.7K | 0.00% | +4,154+34.2% | Added |
| Bank of New York Mellon Corp | 15,866 | $13.3K | 0.00% | 00.0% | Unchanged |
| RBF Capital, LLC | 14,741 | $11.8K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 11,924 | $10.0K | 0.00% | +11,924 | New |
| HSBC Holdings PLC | 11,413 | $9.53K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 10,601 | $8.90K | 0.00% | −13,406−55.8% | Reduced |
| Baker Avenue Asset Management, LP | 1,000 | $840 | 0.00% | +1,000 | New |
| Advisor Group Holdings, Inc. | 500 | $420 | 0.00% | −18−3.5% | Reduced |
| Wells Fargo & Company | 337 | $283 | 0.00% | +5+1.5% | Added |
| BNP Paribas Arbitrage, SA | 32 | $27 | 0.00% | 00.0% | Unchanged |
| Advisory Services Network, LLC | 1 | $1 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 95 | $0 | 0.00% | +1+1.1% | Added |
| Deep Track Capital, LP | 0 | $0 | 0.00% | −1,833,437−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −65,393−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −55,148−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −10,485−100.0% | Sold out |
| Bank of America Corp | 0 | $0 | 0.00% | −59−100.0% | Sold out |