Who Owns Assembly Biosciences, Inc. (ASMB)?Hedge Fund & Institutional Holders

$28.07-0.23 (-0.81%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$1.5322841750347044e+172T

% of Float Held

—

QoQ Change in Holders

+14 / -5

Price History

$8.26$15.82$23.38$30.94$38.50Sep 24Jun 25Mar 26

ASMB — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
Paradigm Biocapital Advisors LPNew Position+665K+$22.6M
Eversept Partners, LPNew Position+160K+$5.4M
ADAGE CAPITAL PARTNERS GP, L.L.C.New Position+161K+$5.0M
Caption Management, LLCNew Position+107K+$3.6M
SUPERSTRING CAPITAL MANAGEMENT LPNew Position+65K+$2.2M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPNew Position+38K+$1.0M
683 Capital Management, LLCNew Position+28K+$947K
Ellsworth Advisors, LLCNew Position+30K+$889K
JPMORGAN CHASE & COIncreased+48K+$821K
Virtus Investment Advisers, LLCNew Position+7K+$250K
Farther Finance Advisors, LLCNew Position+154+$5K
US BANCORP \DE\New Position+59+$2K
Allworth Financial LPNew Position+32+$1K
OMERS ADMINISTRATION CorpNew Position+16K+$0
FEDERATED HERMES, INC.New Position+25K+$0

ASMB — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
Frazier Life Sciences Management, L.P.Closed Position-456K-$11.7B
Blackstone Inc.Decreased-129K-$11.5B
FRANKLIN RESOURCES INCDecreased-28K-$11.4B
Parkman Healthcare Partners LLCDecreased-2K-$6.4B
RENAISSANCE TECHNOLOGIES LLCDecreased-144K-$3.9B
Patient Square Capital LPDecreased-8K-$3.5B
SUSQUEHANNA INTERNATIONAL GROUP, LLPDecreased-51K-$3.4B
Schonfeld Strategic Advisors LLCDecreased-68K-$3.1B
CITADEL ADVISORS LLCDecreased-21K-$1.4B
MONIMUS CAPITAL MANAGEMENT, LPDecreased-4K-$1.1B
MPM BioImpact LLCClosed Position-40K-$1.0B
Walleye Capital LLCClosed Position-25K-$627.2M
Quadrature Capital LtdClosed Position-18K-$459.1M
Cubist Systematic Strategies, LLCClosed Position-16K-$413.7M
UBS Group AGDecreased-6K-$403.2M

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1GILEAD SCIENCES, INC.4,505,391$153.2M7.92%Share
2FARALLON CAPITAL MANAGEMENT LLC1,227,590$41.8M0.20%Share
3RA CAPITAL MANAGEMENT, L.P.1,020,410$34.7M0.36%Share
4Commodore Capital LP1,000,000$34.0M2.26%Share
5JANUS HENDERSON GROUP PLC837,925$28.0M0.01%Share
6Paradigm Biocapital Advisors LP665,251$22.6M0.58%Share
7Point72 Asset Management, L.P.600,609$20.0M0.02%Share
8VANGUARD GROUP INC501,541$17.1M0.00%Share
9Blackstone Inc.318,754$10.8M0.04%Share
10Parkman Healthcare Partners LLC249,357$8.5M0.81%Share
11FRANKLIN RESOURCES INC210,528$7.0M0.00%Share
12B Group, Inc.175,706$6.0M4.41%Share
13Eversept Partners, LP159,676$5.4M0.27%Share
14STEMPOINT CAPITAL LP156,728$5.3M0.91%Share
15ADAGE CAPITAL PARTNERS GP, L.L.C.161,000$5.0M0.01%Share
16BlackRock, Inc.155,702$5.0M0.00%Share
17Patient Square Capital LP127,000$4.3M0.92%Share
18MARSHALL WACE, LLP125,180$4.0M0.00%Share
19Caption Management, LLC106,591$3.6M0.02%Share
20NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO5,057$3.0M0.00%Share
21MILLENNIUM MANAGEMENT LLC98,221$3.0M0.00%Share
22GEODE CAPITAL MANAGEMENT, LLC107,605$3.0M0.00%Share
23VANGUARD GROUP INC66,742$2.3M0.00%Share
24SUPERSTRING CAPITAL MANAGEMENT LP65,273$2.2M1.19%Share
25SUSQUEHANNA INTERNATIONAL GROUP, LLP80,394$2.0M0.00%Share
26Schonfeld Strategic Advisors LLC54,235$1.8M0.01%Share
27MONIMUS CAPITAL MANAGEMENT, LP38,301$1.3M0.86%Share
28Palumbo Wealth Management LLC37,305$1.3M0.31%Share
29Informed Momentum Co LLC29,523$1.0M0.11%Share
30Qube Research & Technologies Ltd42,185$1.0M0.00%Share
31JANE STREET GROUP, LLC30,687$1.0M0.00%Share
32GOLDMAN SACHS GROUP INC34,794$1.0M0.00%Share
33ARROWSTREET CAPITAL, LIMITED PARTNERSHIP37,812$1.0M0.00%Share
34STATE STREET CORP52,989$1.0M0.00%Share
35JPMORGAN CHASE & CO48,159$1.0M0.00%Share
36NORTHERN TRUST CORP41,227$1.0M0.00%Share
37Trexquant Investment LP28,276$961K0.01%Share
38683 Capital Management, LLC27,863$947K0.04%Share
39Ellsworth Advisors, LLC29,735$889K0.18%Share
40ADAR1 Capital Management, LLC19,747$671K0.05%Share
41UBS Group AG9,747$331K0.00%Share
42Virtus Investment Advisers, LLC7,369$250K0.07%Share
43VANGUARD GROUP INC4,615$156K0.00%Share
44Farther Finance Advisors, LLC154$5K0.00%Share
45US BANCORP \DE\59$2K0.00%Share
46Allworth Financial LP32$1K0.00%Share
47EverSource Wealth Advisors, LLC55$1K0.00%Share
48MORGAN STANLEY19,169$00.00%Share
49UBS Group AG20$00.00%Share
50UBS Group AG12$00.00%Share

ASMB Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 202568$448.5M+14
Q3 202554$322.5B+28
Q2 202526$15.1B-11
Q1 202537$30.1B+3
Q4 202434$48.8B+6
Q3 202428$12.1T+3
Q2 202425$11.2T+2
Q1 202423$4.1T—

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As of Q4 2025, 50 institutional investors hold ASMB (Assembly Biosciences, Inc.). The largest holder is GILEAD SCIENCES, INC. with $153.2M in shares. This quarter, 14 institutions opened new positions and 5 closed their positions.

Frequently Asked Questions

How many hedge funds own ASMB?

As of Q4 2025, 50 institutional investors report holding ASMB (Assembly Biosciences, Inc.) in their 13F filings.

Who is the largest institutional holder of ASMB?

The largest institutional holder of ASMB is GILEAD SCIENCES, INC. with $153.2M in shares.

Is institutional ownership of ASMB increasing or decreasing?

This quarter, 14 institutions opened new positions in ASMB and 5 closed their positions.