PUMA BIOTECHNOLOGY INC (PBYI) Institutional Ownership Changes & 13F Activity

PUMA BIOTECHNOLOGY INC (PBYI). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Millennium Management Llc, Invesco Ltd., Two Sigma Investments, Lp, Wellington Management Group Llp, and Sei Investments Co.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheBuy+291+2.5%12,056$97.77KQ2 2026Sep 09, 2026
California State Teachers Retirement SystemSell-1,726-74.1%604$4.90KQ2 2026Aug 24, 2026
Empowered Funds, LlcBuy+16,275+8.0%220,316$1.79MQ2 2026Aug 17, 2026
Millennium Management LlcSell-875,279-59.2%602,240$4.88MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+301,002301,002$2.44MQ2 2026Aug 14, 2026
Two Sigma Investments, LpBuy+127,587+981.4%140,587$1.14MQ2 2026Aug 14, 2026
Wellington Management Group LlpBuy+126,091126,091$1.02MQ2 2026Aug 14, 2026
Sei Investments CoSell-89,513-17.6%418,669$3.40MQ2 2026Aug 14, 2026
Aqr Capital Management LlcSell-75,002-9.4%725,192$5.88MQ2 2026Aug 14, 2026
Trexquant Investment LpBuy+72,22372,223$585.73KQ2 2026Aug 14, 2026
Canada Pension Plan Investment BoardBuy+50,700+222.4%73,500$596.09KQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Sell-34,892-9.9%316,343$2.57MQ2 2026Aug 14, 2026
Xtx Topco LtdBuy+25,180+166.6%40,296$326.80KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+21,333+131.1%37,606$304.98KQ2 2026Aug 14, 2026
State Of Wisconsin Investment BoardSell-20,386-9.8%188,232$1.53MQ2 2026Aug 14, 2026
Kennedy Capital Management LlcSell-16,348-1.8%873,253$7.08MQ2 2026Aug 14, 2026
Bridgeway Capital Management, LlcBuy+16,275+2.1%791,616$6.42MQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+12,328+10.6%128,243$1.04MQ2 2026Aug 14, 2026
Metlife Investment Management, LlcBuy+9,031+57.0%24,873$201.72KQ2 2026Aug 14, 2026
Bank Of America CorpSell-8,617-21.3%31,747$257.47KQ2 2026Aug 14, 2026
Alliancebernstein L.P.Buy+7,560+54.8%21,360$136.49KQ2 2026Aug 14, 2026
Man Group PlcSell-5,869-12.4%41,506$336.61KQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+5,037+16.1%36,343$295.00KQ2 2026Aug 14, 2026
Kemnay Advisory Services Inc.Buy+3,3703,370$27.33KQ2 2026Aug 14, 2026
Prelude Capital Management, LlcBuy+3,100+16.8%21,548$174.75KQ2 2026Aug 14, 2026
Barclays PlcSell-2,786-19.9%11,202$90.85KQ2 2026Aug 14, 2026
Cerity Partners LlcSell-2,501-19.2%10,512$85.25KQ2 2026Aug 14, 2026
Royal Bank Of CanadaSell-1,934-44.8%2,386$20.00KQ2 2026Aug 14, 2026
Philadelphia Investment Partners, LlcSell-1,000-11.1%8,000$64.88KQ2 2026Aug 14, 2026
Legal & General Group PlcBuy+753+21.1%4,317$35.01KQ2 2026Aug 14, 2026
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Frequently asked questions about PBYI activity

  • Which institutional owners are buying PBYI?

    Institutional owners buying PBYI include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in PBYI activity?

    "Buy" means an investor increased their reported position in PBYI compared to the prior reporting period. This reflects growing exposure to PUMA BIOTECHNOLOGY INC (PBYI) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in PBYI increasing?

    Institutional interest in PBYI can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.