ASSEMBLY BIOSCIENCES, INC. (ASMB)

Distributing

Institutional distribution: ownership decreased -1.29% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

85.12%

QoQ Change

-1.29%

Total Value

$373.3B

Shares Outstanding

15.9M

Crowding AnalysisCrowded

Holders72of 5,944

Avg: 68

Uncrowded85th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.61x

65th percentile

45 buying28 selling

+17

New

-11

Closed

-155,595

Net shares

Holding Period Distribution

estimate

Median: 2 QAvg: 2.3 QHolders: 72

Ownership Concentration

Top 5: 63.7%Top 10: 80.1%

GILEAD SCIENCES,33.4%

FARALLON CAPITAL MANAGEMENT9.1%

RA CAPITAL MANAGEMENT, L.P.7.6%

Commodore Capital7.4%

JANUS HENDERSON GROUP6.3%

Others (67)36.3%

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Conviction-Weighted Ownership

Median weight: 0.25%Avg weight: 0.96%Max: 5.90%High conviction (>1%): 3

GILEAD SCIENCES,

FARALLON CAPITAL MANAGEMENT

RA CAPITAL MANAGEMENT, L.P.

Commodore Capital

JANUS HENDERSON GROUP

Paradigm Biocapital Advisors

VANGUARD CAPITAL MANAGEMENT

Parkman Healthcare Partners

Point72 Asset Management, L.P.

Blackstone

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD CAPITAL MANAGEMENT$14M490K shr

SOLDPoint72 Asset Management, L.P.$7M257K shr

BOUGHTParkman Healthcare Partners$4M162K shr

SOLDBlackstone$608K22K shr

BOUGHTJANUS HENDERSON GROUP$315K11K shr

NEWParadigm Biocapital Advisors$23M665K shr

BOUGHTPoint72 Asset Management, L.P.$10M305K shr

NEWParkman Healthcare Partners$8M249K shr

SOLDBlackstone$4M129K shr

BOUGHTJANUS HENDERSON GROUP$3M85K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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