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Ken Griffin's Pfizer Inc. (PFE) position

Yes: as of Q1 2026, Ken Griffin holds 7.4M shares of PFE worth $207M (0.1% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$207M
Shares held
7.4M
% of portfolio
0.1%
Est. average buy price (i)
$26.17
est. since Q1 2021
Quarter-end price
$28.08

Estimated trade prices

Average price in quarters with purchases
$31.06
Average prices in quarters with sales
  • Q4 2025: $25.22 (4.9M shares sold)
  • Q3 2025: $24.68 (4.6M shares sold)
  • Q1 2025: $26.17 (7.8M shares sold)
  • Q3 2024: $29.17 (12.3M shares sold)
  • Q4 2022: $47.94 (2.9M shares sold)
  • Q2 2022: $50.96 (499K shares sold)
  • Q4 2021: $49.55 (4.3M shares sold)
  • Q2 2021: $38.89 (7.4M shares sold)

PFE price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$20$40$60$8020222023202420252026Added 4.6M shares (649.6%) · Q3 2021. Average closing price $44.30 · Price range $39.25–$50.424.6MsharespurchasedSold 4.3M shares (81.5%) · Q4 2021. Average closing price $49.55 · Price range $41.32–$61.254.3MsharessoldAdded 447K shares (45.5%) · Q1 2022. Average closing price $51.89 · Price range $45.75–$56.69447KsharespurchasedSold 499K shares (34.9%) · Q2 2022. Average closing price $50.96 · Price range $46.53–$55.17499KsharessoldAdded 3.1M shares (335.8%) · Q3 2022. Average closing price $48.59 · Price range $43.76–$53.423.1MsharespurchasedSold 2.9M shares (70.6%) · Q4 2022. Average closing price $47.94 · Price range $41.75–$54.482.9MsharessoldAdded 331K shares (27.7%) · Q1 2023. Average closing price $43.19 · Price range $39.39–$51.26331KsharespurchasedAdded 601K shares (39.4%) · Q2 2023. Average closing price $38.92 · Price range $36.12–$41.79601KsharespurchasedAdded 162K shares (7.6%) · Q3 2023. Average closing price $35.36 · Price range $32.09–$37.51162KsharespurchasedAdded 9.3M shares (408.5%) · Q4 2023. Average closing price $30.23 · Price range $26.13–$33.949.3MsharespurchasedAdded 879K shares (7.6%) · Q1 2024. Average closing price $27.75 · Price range $25.89–$29.73879KsharespurchasedAdded 7.9M shares (63.0%) · Q2 2024. Average closing price $27.53 · Price range $25.26–$29.607.9MsharespurchasedSold 12.3M shares (60.5%) · Q3 2024. Average closing price $29.17 · Price range $27.70–$31.3912.3MsharessoldAdded 6.8M shares (84.5%) · Q4 2024. Average closing price $27.12 · Price range $24.80–$30.196.8MsharespurchasedSold 7.8M shares (52.7%) · Q1 2025. Average closing price $26.17 · Price range $25.01–$27.137.8MsharessoldAdded 7.8M shares (111.3%) · Q2 2025. Average closing price $23.32 · Price range $21.59–$24.847.8MsharespurchasedSold 4.6M shares (30.8%) · Q3 2025. Average closing price $24.68 · Price range $23.29–$25.884.6MsharessoldSold 4.9M shares (47.4%) · Q4 2025. Average closing price $25.22 · Price range $24.23–$27.374.9MsharessoldAdded 2.0M shares (36.1%) · Q1 2026. Average closing price $26.59 · Price range $25.15–$28.082.0Msharespurchased← Earlier —1 sell
Average closing price · filing quarter
$26.59
Price range · filing quarter
$25.15 – $28.08
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +2.0M +$52M +36.1% 7.4M May 15, 2026
Q4 2025 Reduced −4.9M −$123M −47.4% 5.4M Feb 17, 2026
Q3 2025 Reduced −4.6M −$113M −30.8% 10.3M Nov 14, 2025
Q2 2025 Added +7.8M +$183M +111.3% 14.9M Aug 14, 2025
Q1 2025 Reduced −7.8M −$205M −52.7% 7.0M May 15, 2025
Q4 2024 Added +6.8M +$185M +84.5% 14.9M Feb 14, 2025
Q3 2024 Reduced −12.3M −$360M −60.5% 8.1M Nov 14, 2024
Q2 2024 Added +7.9M +$217M +63.0% 20.4M Aug 14, 2024
Q1 2024 Added +879K +$24M +7.6% 12.5M May 15, 2024
Q4 2023 Added +9.3M +$282M +408.5% 11.6M Feb 14, 2024
Q3 2023 Added +162K +$5.7M +7.6% 2.3M Nov 14, 2023
Q2 2023 Added +601K +$23M +39.4% 2.1M Aug 14, 2023
Q1 2023 Added +331K +$14M +27.7% 1.5M May 15, 2023
Q4 2022 Reduced −2.9M −$137M −70.6% 1.2M Feb 14, 2023
Q3 2022 Added +3.1M +$152M +335.8% 4.1M Nov 14, 2022
Q2 2022 Reduced −499K −$25M −34.9% 930K Aug 15, 2022
Q1 2022 Added +447K +$23M +45.5% 1.4M May 16, 2022
Q4 2021 Reduced −4.3M −$215M −81.5% 982K Feb 14, 2022
Q3 2021 Added +4.6M +$204M +649.6% 5.3M Nov 15, 2021
Q2 2021 Reduced −7.4M −$290M −91.3% 709K Aug 16, 2021
Q1 2021 First covered – – – 8.2M May 21, 2021
Data through Q1 2026 · filed May 15, 2026
21 grouped rows from 21 quarters

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Common questions

Does Ken Griffin own PFE?

Yes. As of Q1 2026, Ken Griffin disclosed 7.4M shares of PFE, worth $207M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy PFE?

Ken Griffin held PFE since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell PFE?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in PFE. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of PFE does Ken Griffin own?

Ken Griffin disclosed 7.4M shares of PFE as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for PFE?

Ken Griffin began building the PFE position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.