Stock Ownership/PBYI

PUMA BIOTECHNOLOGY INC (PBYI): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in PBYI · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
8
13F filers
Aggregate Value
$34.0M
Across holders
Last Price
$9.12
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity1 increased7 reduced1 exited
Full exits: CITADEL ADVISORS LLC
Institutional Holders of PBYI
↗
8 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund1.84M$14.9M43.8%0.0%Reduced$-861KQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund725K$5.9M17.3%0.0%Reduced+$5.9MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund602K$4.9M14.4%0.0%Reduced$-7.1MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund532K$4.3M12.7%0.0%Reduced$-46KQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund316K$2.6M7.5%0.0%Reduced$-3.1MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund141K$1.1M3.4%0.0%Added+$1.0MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund42K$337K1.0%0.0%Reduced$-48KQ2 2026
Rockefeller Capital Management L.P.
CIK 0001739439
Hedge Fund375$3K0.0%0.0%Reduced$-7KQ2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$14.9M· 43.8% of total· 0.0% port· 1.84M sh· $-861K QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$5.9M· 17.3% of total· 0.0% port· 725K sh· +$5.9M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$4.9M· 14.4% of total· 0.0% port· 602K sh· $-7.1M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$4.3M· 12.7% of total· 0.0% port· 532K sh· $-46K QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$2.6M· 7.5% of total· 0.0% port· 316K sh· $-3.1M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$1.1M· 3.4% of total· 0.0% port· 141K sh· +$1.0M QoQ· Q2 2026
Man Group plcReduced
Hedge Fund
$337K· 1.0% of total· 0.0% port· 42K sh· $-48K QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$3K· 0.0% of total· 0.0% port· 375 sh· $-7K QoQ· Q2 2026
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