DOSSIER · 13F Holders · Q1 2026Mega-capCrowded

CMPX

COMPASS THERAPEUTICS INC

203 institutions still hold COMPASS THERAPEUTICS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 20454B104·203 13F holders·last filed Mar 31, 2026

Market cap

—

▲ 1.7%

vs prior quarter

13F value held

$701M

56.0% inst. owned

of float

Holders

203

+53 QoQ

filers reporting

Activity

+20 / −56

+915 added · −809 reduced

this quarter

Concentration

12.67%

TANG CAPITAL MANAGEMENT LLC #1

top holder share

AI Holders Summary · Q1 2026

203 institutions reported CMPX in Q1 2026. TANG CAPITAL MANAGEMENT LLC leads at 12.7% of the visible book. +53 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

Hide index funds / market makers / custodians(2 on this page)

#HolderValueShares% port.Quarter

TANG CAPITAL MANAGEMENT LLC

$89M16.8M4.51%Q1 2026 02

ORBIMED ADVISORS LLC

$81M15.2M1.60%Q1 2026 03

SUVRETTA CAPITAL MANAGEMENT, LLC

$76M14.3M1.93%Q1 2026 04

Vivo Capital, LLC

$50M9.5M4.20%Q1 2026 05

BlackRock, Inc.

$50M9.5M0.00%Q1 2026 06

ADAGE CAPITAL PARTNERS GP, L.L.C.

$45M8.5M0.07%Q1 2026 07

$42M7.8M1.40%Q4 2025 08

Enavate Sciences GP, LLC

$41M7.8M11.72%Q1 2026 09

STATE STREET CORP

$35M6.7M0.00%Q1 2026 10

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$32M6.0M0.00%Q1 2026 11

RTW INVESTMENTS, LP

$22M4.2M0.22%Q1 2026 12

DEERFIELD MANAGEMENT COMPANY, L.P.

$19M3.6M0.25%Q4 2025 13

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$19M3.6M0.00%Q1 2026 14

Rock Springs Capital Management LP

$17M3.3M1.03%Q1 2026 15

Logos Global Management LP

$17M3.1M0.83%Q1 2026 16

Blue Owl Capital Holdings LP

$16M2.9M4.18%Q1 2026 17

Sofinnova Investments, Inc.

$14M2.6M0.51%Q1 2026 18

Qube Research & Technologies Ltd

$13M2.6M0.01%Q1 2026 19

$13M2.4M0.00%Q1 2026 20

GOLDMAN SACHS GROUP INC

$11M2.0M0.00%Q1 2026

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