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Disclosery

ASMB ASSEMBLY BIOSCIENCES INC

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COMMON STOCK (common), issuer CIK 1426800

68 managers (69 13F filers) reported a position in ASMB shares at 2025-12-31, 13,724,214 shares in all. 21 filers opened a position and 8 filers sold out during the quarter.

Managers
68
13F filers
69
New
21
Added
23
Reduced
13
Sold out
8
Shares held by filers
13,724,214

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
GILEAD SCIENCES, INC.in group GILEAD SCIENCES, INC.4,505,391$153M7.92%013F-HRTimelineGroup
FARALLON CAPITAL MANAGEMENT, L.L.C.1,227,590$41.8M0.22%013F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.1,020,410$34.7M0.36%013F-HRTimelineGroup
Commodore Capital LPin group Commodore Capital LP1,000,000$34M2.26%013F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson837,925$28.5M0.01%+85,29913F-HRTimelineGroup
Paradigm Biocapital Advisors LPin group Paradigm Biocapital Advisors …665,251$22.6M0.61%new13F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.600,609$20.4M0.03%+304,59213F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC572,898$19.5M<0.01%+70,78613F-HRTimelineGroup
Blackstone Inc.in group Blackstone Inc.318,754$10.8M0.04%-129,03513F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Parkman Healthcare Partners LLC249,357$8.48M0.81%-1,62413F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources210,528$7.16M<0.01%-27,64113F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.192,296$6.54M<0.01%+22,09713F-HRTimelineGroup
B Group, Inc.175,706$5.98M4.43%013F-HRTimeline
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…161,000$5.48M0.01%new13F-HRTimelineGroup
Eversept Partners, LP159,676$5.43M0.3%new13F-HRTimeline
STEMPOINT CAPITAL LP156,728$5.33M0.91%+90,59813F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC131,307$4.47M<0.01%+1,21213F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP129,075$4.39M<0.01%+43,86013F-HRTimelineGroup
Patient Square Capital LP127,000$4.32M0.92%-8,18213F-HRTimeline
Caption Management, LLC106,591$3.63M0.16%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC98,221$3.34M<0.01%+76,61313F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding94,297$3.21M-36,729Timeline
Seven Fleet Capital Management LP73,762$2.51M1.7%13F-HR/ATimeline
SUPERSTRING CAPITAL MANAGEMENT LP65,273$2.22M1.19%new13F-HRTimeline
Schonfeld Strategic Advisors LLC54,235$1.84M0.01%-67,65313F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC53,702$1.83M<0.01%+19,87413F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP52,989$1.8M<0.01%+8,17513F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO48,159$1.64M<0.01%+48,15213F-HRTimelineGroup
Qube Research & Technologies Ltd42,185$1.43M<0.01%+31,15513F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP41,227$1.4M<0.01%+1,27213F-HRTimelineGroup
MONIMUS CAPITAL MANAGEMENT, LP38,301$1.3M0.86%-3,76613F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …37,812$1.29M<0.01%new13F-HRTimelineGroup
Palumbo Wealth Management LLC37,305$1.27M0.31%+2,50713F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC34,794$1.18M<0.01%+17,13813F-HR/ATimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC32,866$1.12M<0.01%-21,01213F-HRTimelineGroup
Informed Momentum Co LLC29,523$1M0.11%+45113F-HRTimeline
Trexquant Investment LP28,276$962K0.01%+15,75013F-HRTimeline
683 Capital Management, LLCin group 683 Capital Management, LLC27,863$948K0.08%new13F-HRTimelineGroup
Ellsworth Advisors, LLC29,735$889K0.18%-21513F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.25,394$864K<0.01%013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC24,741$841K<0.01%+20,78013F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY22,534$766K<0.01%+19,00713F-HR/ATimelineGroup
Connor, Clark & Lunn Investment Managem…20,802$707K<0.01%+9,64613F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC19,747$672K0.05%+80013F-HR/ATimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO17,745$604K<0.01%new13F-HRTimelineGroup
OMERS ADMINISTRATION Corp15,598$530K<0.01%new13F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…15,050$512K<0.01%new13F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC13,082$445K<0.01%new13F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP12,699$432K0.04%+27913F-HRTimeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC12,446$422K<0.01%-10,84413F-HRTimelineGroup
Engineers Gate Manager LP10,375$353K<0.01%new13F-HRTimeline
UBS Group AGin group UBS Group AG9,779$333K<0.01%-5,98413F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC9,240$314K<0.01%-144,37113F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…7,369$251K0.07%new13F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co6,704$228K<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/5,110$174K<0.01%+1,73913F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD3,500$119K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC2,201$74.9K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…607$20.6K<0.01%new13F-HRTimelineGroup
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…260$8.84K<0.01%013F-HR/ATimelineGroup
RHUMBLINE ADVISERS190$6.46K<0.01%013F-HRTimeline
Farther Finance Advisors, LLC154$5.24K<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.100$3.4K<0.01%013F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\59$2.01K<0.01%new13F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…55$1.87K<0.01%013F-HRTimelineGroup
Allworth Financial LP32$1.09K<0.01%new13F-HRTimeline
QUADRANT CAPITAL GROUP LLC22$749<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS2$68<0.01%-5613F-HRTimelineGroup