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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 2021

Institutional positions in Assembly Biosciences, Inc. as of Mar 31, 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
107
No complete 13F data for Q4 2020
Shares held
28.7M
No complete 13F data for Q4 2020
Total value
$133.6M
No complete 13F data for Q4 2020

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.

Institutional holdersQ1 2021: 107 institutions
Q1 2021: 107 institutionsQ2 2021: 91 institutionsQ3 2021: 65 institutionsQ4 2021: 62 institutionsQ1 2022: 54 institutionsQ2 2022: 54 institutionsQ3 2022: 50 institutionsQ4 2022: 40 institutionsQ1 2023: 38 institutionsQ2 2023: 32 institutionsQ3 2023: 32 institutionsQ4 2023: 45 institutionsQ1 2024: 24 institutionsQ2 2024: 27 institutionsQ3 2024: 30 institutionsQ4 2024: 35 institutionsQ1 2025: 37 institutionsQ2 2025: 33 institutionsQ3 2025: 57 institutionsQ4 2025: 69 institutionsQ1 2026: 75 institutionsQ2 2026: 92 institutions
Value heldQ1 2021: $133.6M
Q1 2021: $133.6MQ2 2021: $105.1MQ3 2021: $79.0MQ4 2021: $54.3MQ1 2022: $39.3MQ2 2022: $36.1MQ3 2022: $27.2MQ4 2022: $18.4MQ1 2023: $11.1MQ2 2023: $12.0MQ3 2023: $8.62MQ4 2023: $7.12MQ1 2024: $8.68MQ2 2024: $16.1MQ3 2024: $15.6MQ4 2024: $50.3MQ1 2025: $30.4MQ2 2025: $57.1MQ3 2025: $324.9MQ4 2025: $466.7MQ1 2026: $381.5MQ2 2026: $514.8M
Institutions holding ASMB and their total value by quarter
QuarterHoldersValue
Q2 202692$514.8M
Q1 202675$381.5M
Q4 202569$466.7M
Q3 202557$324.9M
Q2 202533$57.1M
Q1 202537$30.4M
Q4 202435$50.3M
Q3 202430$15.6M
Q2 202427$16.1M
Q1 202424$8.68M
Q4 202345$7.12M
Q3 202332$8.62M
Q2 202332$12.0M
Q1 202338$11.1M
Q4 202240$18.4M
Q3 202250$27.2M
Q2 202254$36.1M
Q1 202254$39.3M
Q4 202162$54.3M
Q3 202165$79.0M
Q2 202191$105.1M
Q1 2021107$133.6M

Institutions, Q1 2021

Shares, value and share of portfolio for each institution holding Assembly Biosciences, Inc..

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.

Institutions holding ASMB in Q1 2021
InstitutionSharesValue% of portfolioChange in sharesAction
BlackRock Inc.3,291,676$15.1M0.00%––
Armistice Capital, LLC2,236,000$10.3M0.33%––
Satter Management Co., L.P.2,227,500$10.2M4.53%––
Vanguard Group Inc2,006,381$9.23M0.00%––
Baker Bros. Advisors LP1,541,418$7.09M0.03%––
Boxer Capital, LLC1,500,000$6.90M0.23%––
Candriam Luxembourg S.C.A.1,136,545$6.61M0.05%––
Platinum Investment Management Ltd1,431,120$6.58M0.15%––
Soleus Capital Management, L.P.1,122,000$5.16M0.93%––
Acadian Asset Management LLC1,068,526$4.92M0.02%––
Franklin Resources Inc910,077$4.19M0.00%––
Citadel Advisors LLC885,037$4.07M0.00%––
Two Sigma Advisers, LP704,200$3.24M0.01%––
Geode Capital Management, LLC657,096$3.02M0.00%––
Hudson Bay Capital Management LP620,000$2.85M0.04%––
State Street Corp612,736$2.82M0.00%––
Renaissance Technologies LLC577,335$2.66M0.00%––
Two Sigma Investments, LP553,795$2.55M0.01%––
Dimensional Fund Advisors LP497,591$2.29M0.00%––
Vida Ventures Advisors, LLC450,000$2.07M0.52%––
Northern Trust Corp371,127$1.71M0.00%––
JPMorgan Chase & Co280,124$1.29M0.00%––
PDT Partners, LLC274,476$1.26M0.09%––
Jacobs Levy Equity Management, Inc256,915$1.18M0.01%––
Charles Schwab Investment Management Inc222,721$1.02M0.00%––
Nuveen Asset Management, LLC211,554$973.0K0.00%––
Panagora Asset Management Inc187,954$865.0K0.00%––
Goldman Sachs Group Inc159,581$734.0K0.00%––
Barclays PLC152,892$703.0K0.00%––
Bridgeway Capital Management, LLC150,000$690.0K0.01%––
Connor, Clark & Lunn Investment Management Ltd.138,745$638.0K0.00%––
Russell Investments Group, Ltd.132,362$607.0K0.00%––
Bank of New York Mellon Corp126,665$583.0K0.00%––
Occudo Quantitative Strategies LP97,202$447.0K0.10%––
IndexIQ Advisors LLC89,191$410.0K0.01%––
Millennium Management LLC87,237$401.0K0.00%––
Engineers Gate Manager LP86,219$397.0K0.02%––
Walleye Capital LLC80,524$370.0K0.02%––
Ikarian Capital, LLC72,468$334.0K0.05%––
Swiss National Bank70,500$324.0K0.00%––
UBS Asset Management Americas Inc64,109$294.9K0.00%––
California Public Employees Retirement System62,400$287.0K0.00%––
Cubist Systematic Strategies, LLC60,925$280.0K0.00%––
Alps Advisors Inc59,743$275.0K0.00%––
AQR Capital Management LLC58,444$269.0K0.00%––
Prosight Management, LP56,500$260.0K0.21%––
Invesco Ltd.54,879$253.0K0.00%––
Raffles Associates LP50,000$230.0K0.23%––
Man Group plc49,800$229.0K0.00%––
Wellington Management Group LLP49,290$227.0K0.00%––
SEI Investments Co46,644$215.0K0.00%––
California State Teachers Retirement System46,380$213.0K0.00%––
Parametric Portfolio Associates LLC43,270$199.0K0.00%––
Rhumbline Advisers43,113$198.0K0.00%––
STRS Ohio36,400$167.0K0.00%––
Squarepoint Ops LLC34,600$159.0K0.00%––
Susquehanna International Group, LLP33,665$155.0K0.00%––
Walleye Trading LLC33,266$153.0K0.01%––
Valeo Financial Advisors, LLC31,664$146.0K0.01%––
Bank of America Corp31,242$144.0K0.00%––
HRT Financial LP31,480$144.0K0.00%––
Alliancebernstein L.P.25,600$118.0K0.00%––
Credit Suisse AG25,129$115.0K0.00%––
GAM Holding AG24,100$111.0K0.01%––
Simplex Trading, LLC21,808$100.0K0.01%––
Diversified Trust Co21,248$98.0K0.00%––
Deutsche Bank AG20,691$96.0K0.00%––
New York State Common Retirement Fund20,500$94.0K0.00%––
Commonwealth Equity Services, LLC19,299$88.0K0.00%––
Jupiter Asset Management Ltd18,235$84.0K0.00%––
American International Group, Inc.17,886$82.0K0.00%––
Dynamic Technology Lab Private Ltd17,166$79.0K0.01%––
Ameriprise Financial Inc16,960$78.0K0.00%––
Blair William & Co16,500$76.0K0.00%––
State Board of Administration of Florida Retirement System16,017$74.0K0.00%––
Voya Investment Management LLC16,114$74.0K0.00%––
UBS Group AG15,582$72.0K0.00%––
ExodusPoint Capital Management, LP14,954$69.0K0.00%––
RBF Capital, LLC14,741$68.0K0.00%––
Los Angeles Capital Management LLC13,855$64.0K0.00%––
ProShare Advisors LLC13,472$62.0K0.00%––
Jane Street Group, LLC13,399$62.0K0.00%––
Boothbay Fund Management, LLC12,140$56.0K0.00%––
ETF Managers Group, LLC11,726$53.0K0.00%––
XTX Topco Ltd11,450$53.0K0.03%––
BNP Paribas Arbitrage, SA9,924$45.6K0.00%––
Group One Trading, L.P.9,523$44.0K0.00%––
Morgan Stanley8,765$40.0K0.00%––
Wells Fargo & Company7,893$37.0K0.00%––
Legal & General Group Plc6,362$29.0K0.00%––
Zurcher Kantonalbank (Zurich Cantonalbank)4,677$22.0K0.00%––
Royal Bank of Canada3,616$16.0K0.00%––
Federated Hermes, Inc.3,338$15.0K0.00%––
Citigroup Inc3,086$14.0K0.00%––
Great West Life Assurance Co3,033$14.0K0.00%––
Tower Research Capital LLC (TRC)3,106$14.0K0.00%––
Public Employees Retirement System of Ohio2,761$13.0K0.00%––
Ameritas Investment Partners, Inc.2,472$11.0K0.00%––
Bank of Montreal914$4.00K0.00%––
Macquarie Group Ltd912$4.00K0.00%––