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
Q2 2021Renaissance Technologies LLCBuy1,826,7002,363,741$92,564
Q2 2021Hancock Classic ValueBuy118,9313,018,130$118,190
Q1 2021Kahn Brothers GroupSell-12,431662,287$23,994,658
Q1 2021Dodge & Cox Stock FundSell-29,027168,379$6,100
Q1 2021Jensen Investment ManagementBuy249,57611,473,187$415,674
Q1 2021Sound Shore ManagementSell-64,6822,182,333$79,066
Q1 2021Matrix Private Capital GroupBuy2,05620,684$749
Q1 2021Muhlenkamp & CoBuy64024,379$1,229
Q1 2021Sequoia Financial AdvisorsBuy3,319121,767$4,412
Q1 2021Hillman Value FundBuy60,187168,655$6,110
Q1 2021Fairfax Financial HoldingsBuy100,000400,900$14,525
Q1 2021Mairs & Power Growth FundSell-61,1372,010,417$72,837
Q1 2021Hancock Classic ValueBuy89,0862,899,199$105,038
Q4 2020Kahn Brothers GroupSell-17,826674,718$24,836,370
Q4 2020Dodge & Cox Stock FundSell-17,438197,406$7,267
Q4 2020Jensen Investment ManagementBuy54,80811,223,611$413,141
Q4 2020Sound Shore ManagementSell-446,2112,247,015$82,713
Q4 2020Matrix Private Capital GroupBuy2,22818,628$686
Q4 2020Muhlenkamp & CoSell-2823,739$874
Q4 2020Hillman Value FundBuy18,832108,468$3,993
Q4 2020Sequoia Financial AdvisorsBuy15,588118,448$4,360
Q4 2020Fairfax Financial HoldingsBuy90,900300,900$11,076
Q4 2020Mairs & Power Growth FundSell-197,0882,071,554$76,254
Q4 2020Hancock Classic ValueBuy74,1782,810,113$103,440
Q3 2020Kahn Brothers GroupSell-71,972692,544$25,416,366
Q3 2020Dodge & Cox Stock FundSell-26,743214,844$7,885
Q3 2020Jensen Investment ManagementBuy761,98011,168,803$409,895
Q3 2020Sound Shore ManagementSell-784,1722,693,226$98,841
Q3 2020Matrix Private Capital GroupBuy4,31616,400$602
Q3 2020Muhlenkamp & CoSell-15523,767$872

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.