Pfizer Inc.
CL ˙ SNSE ˙ US7170811035
SecurityCL:PFE / Pfizer Inc.
InstitutionBrooktree Capital Management
Latest Disclosed Ownership101,435 shares
Latest Disclosed Value $ 2,848,295
Brooktree Capital Management reports 15.83% decrease in ownership of PFE / Pfizer Inc.

On May 6, 2026 - Brooktree Capital Management filed a 13F-HR form disclosing ownership of 101,435 shares of Pfizer Inc. (CL:PFE) valued at $2,848,295 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 120,510 shares of Pfizer Inc.. This represents a change in shares of -15.83% 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)
2026-05-06 2026-03-31 13F PFIZER COM 717081103 101,435 -19,075 -15.83 2,848 -5.07 2.2584
2026-02-02 2025-12-31 13F PFIZER COM 717081103 120,510 -9,136 -7.05 3,001 -9.17 1.9961
2025-11-07 2025-09-30 13F PFIZER COM 717081103 129,646 8,291 6.83 3,303 12.31 2.0992
2025-08-06 2025-06-30 13F PFIZER COM 717081103 121,355 3,184 2.69 2,942 -1.77 1.9235
2025-05-06 2025-03-31 13F PFIZER COM 717081103 118,171 2,788 2.42 2,994 -2.19 2.2468
2025-02-10 2024-12-31 13F PFIZER COM 717081103 115,383 1,389 1.22 3,061 -7.19 2.2700
2024-11-06 2024-09-30 13F PFIZER COM 717081103 113,994 1,316 1.17 3,299 4.63 2.6796
2024-08-05 2024-06-30 13F PFIZER COM 717081103 112,678 -8,574 -7.07 3,153 -6.30 2.6961
2024-05-06 2024-03-31 13F PFIZER COM 717081103 121,252 6,117 5.31 3,365 1.51 2.5950
2024-02-05 2023-12-31 13F PFIZER COM 717081103 115,135 -9,877 -7.90 3,315 -20.07 2.6789
2023-11-06 2023-09-30 13F PFIZER COM 717081103 125,012 3,640 3.00 4,147 -6.85 3.4634
2023-08-08 2023-06-30 13F PFIZER COM 717081103 121,372 -4,228 -3.37 4,452 -13.13 3.3846
2023-05-08 2023-03-31 13F PFIZER COM 717081103 125,600 -1,659 -1.30 5,124 -21.41 3.9903
2023-02-07 2022-12-31 13F PFIZER COM 717081103 127,259 -2,557 -1.97 6,521 14.77 5.3574
2022-11-07 2022-09-30 13F PFIZER COM 717081103 129,816 5,650 4.55 5,681 -12.73 4.6777
2022-08-08 2022-06-30 13F PFIZER COM 717081103 124,166 2,621 2.16 6,510 3.46 4.8909
2022-05-09 2022-03-31 13F PFIZER COM 717081103 121,545 8,432 7.45 6,292 -5.79 4.1010
2022-02-07 2021-12-31 13F PFIZER COM 717081103 113,113 -1,206 -1.05 6,679 35.83 4.0813
2021-11-09 2021-09-30 13F PFIZER COM 717081103 114,319 2,302 2.06 4,917 12.08 3.1333
2021-08-09 2021-06-30 13F PFIZER COM 717081103 112,017 17,348 18.32 4,387 27.90 2.8162
2021-05-03 2021-03-31 13F PFIZER COM 717081103 94,669 1,965 2.12 3,430 0.53 2.2980
2021-02-03 2020-12-31 13F PFIZER COM 717081103 92,704 -1,046 -1.12 3,412 -0.81 2.5105
2020-11-09 2020-09-30 13F PFIZER COM 717081103 93,750 4,164 4.65 3,440 17.45 2.9114
2020-08-18 2020-06-30 13F/A-1 PFIZER COM 717081103 89,586 1,572 1.79 2,929 1.95 2.7544
2020-08-03 2020-06-30 13F PFIZER COM 717081103 89,586 1,572 2,929 2,903,334.5228
2020-05-06 2020-03-31 13F PFIZER INC COM Stock 717081103 88,014 15,868 21.99 2,873 1.63 3.3285
2020-02-26 2019-12-31 13F PFIZER INC COM Stock 717081103 72,146 72,146 2,827 2.5934
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.