DOSSIER · 13F Holders · Q1 2026
PBYI

PUMA BIOTECHNOLOGY INC

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

CUSIP 74587V107·163 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$190M
visible holders
Holders
163
filers reporting
Concentration
13.92%
ACORN CAPITAL ADVISORS, LLC #1
top holder share
AI Holders Summary · Q1 2026

163 institutions reported PBYI in Q1 2026. ACORN CAPITAL ADVISORS, LLC leads at 13.9% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
ACORN CAPITAL ADVISORS, LLC
CIK 0002054410
$26M4.1M7.50%Q1 2026
02
BlackRock, Inc.
CIK 0002012383
$23M3.6M0.00%Q1 2026
03
ACADIAN ASSET MANAGEMENT LLC
CIK 0000916542
$13M2.0M0.02%Q1 2026
04
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$12M1.9M0.02%Q1 2026
05
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$12M1.9M0.01%Q1 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$12M1.8M0.00%Q1 2026
07
Vanguard Portfolio Management
CIK 0002100121· Index
$11M1.7M0.00%Q1 2026
08
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$9M1.5M0.00%Q1 2026
09
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$9M1.4M0.00%Q1 2026
10
LSV ASSET MANAGEMENT
CIK 0001050470
$8M1.2M0.02%Q1 2026
11
O'SHAUGHNESSY ASSET MANAGEMENT, LLC
CIK 0001423442
$7M1.1M0.04%Q1 2026
12
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$7M1.0M0.00%Q1 2026
13
STATE STREET CORP
CIK 0000093751
$6M918K0.00%Q1 2026
14
KENNEDY CAPITAL MANAGEMENT LLC
CIK 0000884589
$6M890K0.12%Q1 2026
15
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$5M800K0.00%Q1 2026
16
Connor, Clark & Lunn Investment Management Ltd.
CIK 0001596800
$5M783K0.01%Q1 2026
17
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$5M775K0.10%Q1 2026
18
RITHOLTZ WEALTH MANAGEMENT
CIK 0001698218
$5M774K0.09%Q1 2026
19
GOLDMAN SACHS GROUP INC
CIK 0000886982
$4M670K0.00%Q1 2026
20
NORTHERN TRUST CORP
CIK 0000073124· Index
$4M642K0.00%Q1 2026
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Insiders at PUMA BIOTECHNOLOGY INC
Nougues Maximo FHunt Douglas MAuerbach Alan HMoyes Jay MSenderowicz AdrianStuglik Brian MWilson Troy EdwardDorval Allison