PFIZER INC (PFE) Stock Institutional Trading Activity


PFIZER INC (PFE) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Kahn Brothers Group, Hancock Classic Value, Causeway Capital Management, Eagle Capital Management, and Cullen Value Fund. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2022Renaissance Technologies LLCSell-1,445,6606,011,941$311,238
Q1 2022Hancock Classic ValueSell-1,595,6903,397,428$175,885
Q4 2021Kahn Brothers GroupBuy36,9401,017,928$60,108,649
Q4 2021Dodge & Cox Stock FundSell-1,500154,352$9,114
Q4 2021ARK InvestSell-1,273,820943,849$55,734
Q4 2021Jensen Investment ManagementSell-1,029,4579,634,399$568,911
Q4 2021Sound Shore ManagementBuy420,1842,312,985$136,582
Q4 2021Matrix Private Capital GroupBuy66219,980$1,180
Q4 2021Sequoia Financial AdvisorsBuy100,419120,598$7,121
Q4 2021Mairs & Power Growth FundSell-884,335751,298$44,364
Q4 2021Hancock Classic ValueSell-28,7764,993,118$294,844
Q3 2021Kahn Brothers GroupBuy156,484980,988$42,192,294
Q3 2021Dodge & Cox Stock FundSell-6,069155,852$6,703
Q3 2021ARK InvestBuy2,217,6692,217,669$95,382
Q3 2021Jensen Investment ManagementSell-727,36110,663,856$458,652
Q3 2021Sound Shore ManagementSell-706,5771,892,801$81,409
Q3 2021Matrix Private Capital GroupBuy45419,318$831
Q3 2021Sequoia Financial AdvisorsSell-143,32920,179$868
Q3 2021Hillman Value FundBuy7,427176,532$7,592
Q3 2021Mairs & Power Growth FundSell-324,0481,635,633$70,349
Q3 2021Renaissance Technologies LLCBuy5,093,8607,457,601$320,751
Q3 2021Hancock Classic ValueBuy2,003,7645,021,894$215,992
Q2 2021Kahn Brothers GroupBuy162,217824,504$32,287,577
Q2 2021Dodge & Cox Stock FundSell-6,458161,921$6,341
Q2 2021Jensen Investment ManagementSell-81,97011,391,217$446,080
Q2 2021Sound Shore ManagementBuy417,0452,599,378$101,792
Q2 2021Matrix Private Capital GroupSell-1,82018,864$739
Q2 2021Sequoia Financial AdvisorsBuy41,741163,508$6,403
Q2 2021Hillman Value FundBuy450169,105$6,622
Q2 2021Mairs & Power Growth FundSell-50,7361,959,681$76,741

Frequently asked questions about PFE activity

  • Which institutional owners are buying PFE?

    Institutional owners buying PFE 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 PFE activity?

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

  • Is institutional interest in PFE increasing?

    Institutional interest in PFE 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.