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 quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q3 2023 | Hancock Classic Value | Sell | -5,481 | 2,719,130 | $90,193,542 |
| Q2 2023 | Kahn Brothers Group | Buy | 36,429 | 1,066,091 | $39,104,514 |
| Q2 2023 | ARK Invest | Sell | -19,189 | 465,601 | $17,078,248 |
| Q2 2023 | Jensen Investment Management | Buy | 145,243 | 11,762,638 | $431,453,562 |
| Q2 2023 | Sound Shore Management | Sell | -647,521 | 1,792,547 | $65,750,624 |
| Q2 2023 | Dodge & Cox Stock Fund | Sell | -500 | 122,985 | $4,511,090 |
| Q2 2023 | Renaissance Technologies LLC | Sell | -3,738,314 | 8,411,641 | $308,539 |
| Q2 2023 | Matrix Private Capital Group | Sell | -225 | 12,768 | $468,325 |
| Q2 2023 | Matrix Advisors Value Fund | Buy | 107,828 | 113,474 | $4,162,226 |
| Q2 2023 | Sequoia Financial Advisors | Sell | -5,099 | 263,184 | $9,653,579 |
| Q2 2023 | Mairs & Power Growth Fund | Sell | -45,648 | 325,182 | $11,927,676 |
| Q2 2023 | Hancock Classic Value | Sell | -17,238 | 2,724,611 | $99,938,731 |
| Q1 2023 | Kahn Brothers Group | Sell | -8,644 | 1,029,662 | $42,010,682 |
| Q1 2023 | ARK Invest | Sell | -6,765 | 484,790 | $19,779,432 |
| Q1 2023 | Jensen Investment Management | Buy | 1,091,421 | 11,617,395 | $469,110,410 |
| Q1 2023 | Sound Shore Management | Buy | 558,190 | 2,440,068 | $99,554,774 |
| Q1 2023 | Dodge & Cox Stock Fund | Sell | -200 | 123,485 | $5,038,188 |
| Q1 2023 | Renaissance Technologies LLC | Buy | 11,078,514 | 12,149,955 | $495,718 |
| Q1 2023 | Matrix Private Capital Group | Sell | -268 | 12,993 | $530,130 |
| Q1 2023 | Sequoia Financial Advisors | Buy | 157,442 | 268,283 | $10,945,950 |
| Q1 2023 | Mairs & Power Growth Fund | Sell | -71,985 | 370,830 | $15,129,864 |
| Q1 2023 | Hancock Classic Value | Sell | -17,984 | 2,741,849 | $111,867,439 |
| Q4 2022 | Kahn Brothers Group | Sell | -4,047 | 1,038,306 | $53,203,183 |
| Q4 2022 | ARK Invest | Sell | -41,257 | 491,555 | $25,187,278 |
| Q4 2022 | Jensen Investment Management | Buy | 549,885 | 10,525,974 | $539,350,908 |
| Q4 2022 | Sound Shore Management | Buy | 120,072 | 1,881,878 | $96,427,429 |
| Q4 2022 | Dodge & Cox Stock Fund | Sell | -18,501 | 123,685 | $6,337,619 |
| Q4 2022 | Renaissance Technologies LLC | Sell | -918,600 | 1,071,441 | $54,901 |
| Q4 2022 | Matrix Private Capital Group | Sell | -123 | 13,261 | $679,494 |
| Q4 2022 | Sequoia Financial Advisors | Buy | 46,985 | 110,841 | $5,679,486 |
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.