Pfizer Inc.
CL ˙ SNSE ˙ US7170811035
SecurityCL:PFE / Pfizer Inc.
InstitutionSamjo Management, LLC
Latest Disclosed Ownership59,645 shares
Latest Disclosed Value $ 1,674,832
Samjo Management, LLC reports 0.83% decrease in ownership of PFE / Pfizer Inc.

On May 15, 2026 - Samjo Management, LLC filed a 13F-HR form disclosing ownership of 59,645 shares of Pfizer Inc. (CL:PFE) valued at $1,674,832 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 60,145 shares of Pfizer Inc.. This represents a change in shares of -0.83% 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)
2026-05-15 2026-03-31 13F PFIZER COM 717081103 59,645 -500 -0.83 1,675 11.82 0.5252
2026-02-17 2025-12-31 13F/A-1 PFIZER COM 717081103 60,145 -3,500 -5.50 1,498 -7.65 0.5788
2026-02-13 2025-12-31 13F PFIZER COM 717081103 60,145 -3,500 1,498
2025-11-13 2025-09-30 13F PFIZER COM 717081103 63,645 -2,000 -3.05 1,622 1.89 0.6195
2025-08-13 2025-06-30 13F PFIZER COM 717081103 65,645 -50 -0.08 1,591 -4.39 0.6714
2025-05-14 2025-03-31 13F PFIZER COM 717081103 65,695 -100 -0.15 1,665 -4.64 0.7057
2025-02-13 2024-12-31 13F PFIZER COM 717081103 65,795 -15,130 -18.70 1,746 -25.46 0.6581
2024-11-12 2024-09-30 13F PFIZER COM 717081103 80,925 18,065 28.74 2,342 33.16 0.8081
2024-08-13 2024-06-30 13F/A-1 PFIZER COM 717081103 62,860 0 0.00 1,759 0.80 0.6551
2024-08-12 2024-06-30 13F PFIZER COM 717081103 62,860 0 1,759 0.3015
2024-05-14 2024-03-31 13F PFIZER COM 717081103 62,860 900 1.45 1,744 -2.19 0.6136
2024-02-09 2023-12-31 13F PFIZER COM 717081103 61,960 61,960 1,784 0.6318
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.