Pfizer Inc.
CL ˙ SNSE ˙ US7170811035
SecurityCL:PFE / Pfizer Inc.
InstitutionRuffer LLP
Latest Disclosed Ownership1,149,753 shares
Latest Disclosed Value $ 32,377,486
Ruffer LLP reports 13.17% decrease in ownership of PFE / Pfizer Inc.

On May 13, 2026 - Ruffer LLP filed a 13F-HR form disclosing ownership of 1,149,753 shares of Pfizer Inc. (CL:PFE) valued at $32,377,486 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 1,324,096 shares of Pfizer Inc.. This represents a change in shares of -13.17% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F PFIZER COM 717081103 1,149,753 -174,343 -13.17 32,377 -1.95 1.3246
2026-01-28 2025-12-31 13F PFIZER COM 717081103 1,324,096 -698,969 -34.55 33,021 -35.94 1.5033
2025-11-03 2025-09-30 13F PFIZER COM 717081103 2,023,065 623,552 44.55 51,547 51.95 2.8651
2025-07-16 2025-06-30 13F PFIZER COM 717081103 1,399,513 -792,785 -36.16 33,923 -38.93 1.5008
2025-05-09 2025-03-31 13F PFIZER COM 717081103 2,192,298 -2,014,089 -47.88 55,552 -50.22 2.1387
2025-02-07 2024-12-31 13F PFIZER COM 717081103 4,206,387 -2,319,901 -35.55 111,599 -40.90 4.0306
2024-11-08 2024-09-30 13F PFIZER COM 717081103 6,526,288 797,593 13.92 188,837 17.79 5.9499
2024-08-08 2024-06-30 13F PFIZER COM 717081103 5,728,695 -178,963 -3.03 160,317 -2.16 6.8840
2024-05-08 2024-03-31 13F PFIZER COM 717081103 5,907,658 111,646 1.93 163,848 -1.79 6.3090
2024-02-12 2023-12-31 13F PFIZER COM 717081103 5,796,012 4,133,786 248.69 166,837 213.02 6.1982
2023-11-13 2023-09-30 13F PFIZER COM 717081103 1,662,226 489,177 41.70 53,300 23.89 2.9535
2023-08-10 2023-06-30 13F PFIZER COM 717081103 1,173,049 101,370 9.46 43,021 -1.57 2.5188
2023-05-11 2023-03-31 13F PFIZER COM 717081103 1,071,679 508,764 90.38 43,708 51.02 1.5140
2023-02-10 2022-12-31 13F PFIZER COM 717081103 562,915 8,140 1.47 28,943 21.11 1.9424
2022-11-10 2022-09-30 13F PFIZER COM 717081103 554,775 10,090 1.85 23,897 -16.44 1.4950
2022-08-05 2022-06-30 13F PFIZER COM 717081103 544,685 -33,949 -5.87 28,599 -4.54 1.1251
2022-05-12 2022-03-31 13F PFIZER COM 717081103 578,634 19,280 3.45 29,959 -5.66 0.7005
2022-02-04 2021-12-31 13F PFIZER COM 717081103 559,354 124,464 28.62 31,757 70.95 0.7651
2021-11-10 2021-09-30 13F PFIZER COM 717081103 434,890 227,047 109.24 18,577 128.22 0.5878
2021-08-06 2021-06-30 13F PFIZER COM 717081103 207,843 207,843 8,140 0.2280
2015-08-12 2015-06-30 13F PFIZER COM 717081103 0 -5,994 -100.00 0 -100.00
2015-05-12 2015-03-31 13F PFIZER COM 717081103 5,994 5,994 209 0.0091
2015-02-11 2014-12-31 13F PFIZER COM 717081103 0 -7,100 -100.00 0 -100.00
2014-11-07 2014-09-30 13F PFIZER COM 717081103 7,100 0 0.00 213 0.00 0.0069
2014-08-05 2014-06-30 13F PFIZER COM 717081103 7,100 0 0.00 213 -6.58 0.0069
2014-05-09 2014-03-31 13F PFIZER COM 717081103 7,100 0 0.00 228 5.07 0.0070
2014-02-20 2013-12-31 13F/A-1 PFIZER COM 717081103 7,100 0 0.00 217 5.34 0.0077
2014-02-13 2013-12-31 13F PFIZER COM 717081103 7,100 217
2013-11-12 2013-09-30 13F PFIZER COM 717081103 7,100 7,100 206 0.0096
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.