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Disclosery

ASMB ASSEMBLY BIOSCIENCES INC

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COMMON STOCK (common), issuer CIK 1426800

71 managers (75 13F filers) reported a position in ASMB shares at 2026-03-31, 13,568,619 shares in all. 13 filers opened a position and 10 filers sold out during the quarter.

Managers
71
13F filers
75
New
13
Added
28
Reduced
17
Sold out
10
Shares held by filers
13,568,619

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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$125M5.9%013F-HRTimelineGroup
FARALLON CAPITAL MANAGEMENT, L.L.C.1,227,590$34.1M0.2%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$28.3M0.3%013F-HRTimelineGroup
Commodore Capital LPin group Commodore Capital LP1,000,000$27.8M1.61%013F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson849,309$23.5M0.01%+11,38413F-HR/ATimelineGroup
Paradigm Biocapital Advisors LPin group Paradigm Biocapital Advisors …665,251$18.5M0.38%013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding584,391$16.2MnewTimeline
Parkman Healthcare Partners LLC411,227$11.4M1.18%+161,87013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.344,105$9.55M0.02%-256,50413F-HRTimelineGroup
Blackstone Inc.in group Blackstone Inc.296,855$8.24M0.03%-21,89913F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC233,650$6.48M<0.01%+135,42913F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.202,743$5.63M<0.01%+10,44713F-HRTimelineGroup
STEMPOINT CAPITAL LP185,435$5.15M0.99%+28,70713F-HR/ATimeline
B Group, Inc.175,706$4.88M3.61%013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP163,400$4.53M<0.01%+34,32513F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…161,000$4.47M0.01%013F-HRTimelineGroup
Patient Square Capital LP136,315$3.78M0.67%+9,31513F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC132,971$3.69M<0.01%+1,66413F-HRTimelineGroup
Schonfeld Strategic Advisors LLC120,500$3.34M0.03%+66,26513F-HRTimeline
Caption Management, LLC81,841$2.27M0.11%-24,75013F-HRTimeline
HighVista Strategies LLC74,735$2.07M0.57%new13F-HRTimeline
Qube Research & Technologies Ltd69,256$1.92M<0.01%+27,07113F-HRTimeline
STATE STREET CORPin group STATE STREET CORP56,689$1.57M<0.01%+3,70013F-HRTimelineGroup
Seven Fleet Capital Management LP56,147$1.56M0.49%-17,61513F-HR/ATimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO53,962$1.44M<0.01%+5,80313F-HR/ATimelineGroup
MONIMUS CAPITAL MANAGEMENT, LP48,390$1.34M0.37%+10,08913F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding47,049$1.31M-47,248Timeline
GSA CAPITAL PARTNERS LLP45,049$1.25M0.08%+32,35013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP41,014$1.14M<0.01%-21313F-HRTimelineGroup
Eversept Partners, LP40,889$1.13M0.07%-118,78713F-HRTimeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …39,446$1.09M<0.01%+1,63413F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC36,205$1M<0.01%+1,41113F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC34,499$957K<0.01%-19,20313F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY33,055$917K<0.01%+10,52113F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC27,863$773K0.07%013F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC27,050$751K<0.01%+2,30913F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…26,496$735K<0.01%new13F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC25,437$706K<0.01%-7,42913F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC23,804$661K<0.01%new13F-HRTimelineGroup
Trexquant Investment LP22,741$631K<0.01%-5,53513F-HRTimeline
Connor, Clark & Lunn Investment Managem…21,761$604K<0.01%+95913F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP20,550$570K<0.01%new13F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC19,947$554K0.03%+20013F-HRTimelineGroup
Palumbo Wealth Management LLC19,643$545K0.13%-17,66213F-HRTimeline
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.18,904$525K<0.01%-6,49013F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…16,799$466K<0.01%+1,74913F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC15,651$434K<0.01%+6,41113F-HRTimeline
EntryPoint Capital, LLC12,384$344K0.1%new13F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…11,112$308K<0.01%new13F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC10,917$303K<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/10,902$303K<0.01%+5,79213F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd10,785$299K0.01%new13F-HRTimelineGroup
Engineers Gate Manager LP9,423$261K<0.01%-95213F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC9,154$254K<0.01%new13F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD8,500$236K<0.01%+5,00013F-HRTimeline
OMERS ADMINISTRATION Corp8,100$225K<0.01%-7,49813F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…7,553$210K0.06%+18413F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC6,483$180K<0.01%+4,28213F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…544$15.1K<0.01%-6313F-HRTimelineGroup
UBS Group AGin group UBS Group AG364$10.1K<0.01%-9,41513F-HRTimelineGroup
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…260$7.21K<0.01%013F-HRTimelineGroup
Aquatic Capital Management LLC220$6.11K<0.01%new13F-HRTimeline
RHUMBLINE ADVISERS190$5.27K<0.01%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS149$4.13K<0.01%+14713F-HRTimelineGroup
Accent Capital Management, LLC142$3.94K<0.01%new13F-HR/ATimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.100$2.77K<0.01%013F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\59$1.64K<0.01%013F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…57$1.58K<0.01%new13F-HRTimelineGroup
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…55$1.53K<0.01%013F-HR/ATimelineGroup
Allworth Financial LP29$805<0.01%-313F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA16$00%new13F-HRTimelineGroupValue filed as zero, left out of ratios.