DOSSIER · 13F Holders · Q1 2026CyclicalNet sold

ALXO

ALX ONCOLOGY HLDGS INC

70 institutions still hold ALX ONCOLOGY HLDGS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 00166B105·70 13F holders·last filed Mar 31, 2026

Market cap

—

▲ 5.2%

vs prior quarter

13F value held

$166M

47.0% inst. owned

of float

Holders

70

-4 QoQ

filers reporting

Activity

+38 / −62

+816 added · −688 reduced

this quarter

Concentration

15.69%

RA CAPITAL MANAGEMENT, L.P. #1

top holder share

AI Holders Summary · Q1 2026

70 institutions reported ALXO in Q1 2026. RA CAPITAL MANAGEMENT, L.P. leads at 15.7% of the visible book. -4 net institutions QoQ — distribution reading.

Top holders

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

Hide index funds / market makers / custodians(3 on this page)

#HolderValueShares% port.Quarter

RA CAPITAL MANAGEMENT, L.P.

$26M13.0M0.28%Q1 2026 02

TCG Crossover Management, LLC

$26M13.0M0.75%Q1 2026 03

venBio Partners LLC

$26M12.9M9.21%Q1 2026 04

Redmile Group, LLC

$16M8.0M1.06%Q1 2026 05

Blackstone Inc.

$12M5.8M0.05%Q1 2026 06

DRIEHAUS CAPITAL MANAGEMENT LLC

$11M5.7M0.08%Q1 2026 07

VANGUARD CAPITAL MANAGEMENT LLC

CIK 0002100119· Index

$8M4.2M0.00%Q1 2026 08

Vivo Capital, LLC

$6M3.2M0.53%Q1 2026 09

Almitas Capital LLC

$6M3.2M1.44%Q1 2026 10

ORBIMED ADVISORS LLC

$6M2.9M0.11%Q1 2026 11

ADAGE CAPITAL PARTNERS GP, L.L.C.

$4M2.0M0.01%Q1 2026 12

MILLENNIUM MANAGEMENT LLC

$4M2.0M0.00%Q1 2026 13

TWO SIGMA INVESTMENTS, LP

$3M1.6M0.00%Q1 2026 14

SUSQUEHANNA INTERNATIONAL GROUP, LLP

CIK 0001446194· Market maker

$3M1.4M0.00%Q1 2026 15

Ensign Peak Advisors, Inc

$2M951K0.00%Q1 2026 16

$2M915K0.00%Q1 2026 17

RENAISSANCE TECHNOLOGIES LLC

$1M733K0.00%Q1 2026 18

BANK OF AMERICA CORP /DE/

$1M578K0.00%Q1 2026 19

GEODE CAPITAL MANAGEMENT, LLC

CIK 0001214717· Index

$989,757493K0.00%Q1 2026 20

BlackRock, Inc.

$897,836448K0.00%Q1 2026

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