Pfizer Inc.
US ˙ NYSE ˙ US7170811035

SecurityPFE / Pfizer Inc.
InstitutionMarathon Capital Management
Latest Disclosed Ownership16,345 shares
Latest Disclosed Value $ 458,966
Marathon Capital Management reports 3.76% decrease in ownership of PFE / Pfizer Inc.

On May 14, 2026 - Marathon Capital Management filed a 13F-HR form disclosing ownership of 16,345 shares of Pfizer Inc. (US:PFE) valued at $458,968 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 16,983 shares of Pfizer Inc.. This represents a change in shares of -3.76% during the quarter. The current value of the position is $425,624 USD.

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)
2026-05-14 2026-03-31 13F PFIZER COM 717081103 16,345 -638 -3.76 459 8.53 0.1031
2026-01-29 2025-12-31 13F PFIZER COM 717081103 16,983 -52 -0.31 423 -2.76 0.0910
2025-11-14 2025-09-30 13F PFIZER COM 717081103 17,035 -82,475 -82.88 434 -82.01 0.0993
2025-08-14 2025-06-30 13F PFIZER COM 717081103 99,510 -4,945 -4.73 2,412 -8.84 0.6143
2025-05-15 2025-03-31 13F PFIZER COM 717081103 104,455 301 0.29 2,647 -4.23 0.7049
2025-02-14 2024-12-31 13F PFIZER COM 717081103 104,154 -1,684 -1.59 2,763 -9.76 0.6901
2024-11-14 2024-09-30 13F PFIZER COM 717081103 105,838 399 0.38 3,063 3.80 0.7426
2024-08-14 2024-06-30 13F PFIZER COM 717081103 105,439 119 0.11 2,950 0.96 0.7518
2024-05-15 2024-03-31 13F PFIZER COM 717081103 105,320 906 0.87 2,923 -2.79 0.6974
2024-02-14 2023-12-31 13F/A-1 PFIZER COM 717081103 104,414 -47,482 -31.26 3,006 -40.33 0.7556
2024-02-08 2023-12-31 13F PFIZER COM 717081103 104,414 -47,482 3,006 0.7556
2023-11-14 2023-09-30 13F PFIZER COM 717081103 151,896 2,014 1.34 5,038 -8.35 1.2679
2023-08-15 2023-06-30 13F/A-1 PFIZER COM 717081103 149,882 1,561 1.05 5,498 -9.16 1.3571
2023-08-14 2023-06-30 13F PFIZER COM 717081103 149,882 1,561 5,498 1.3317
2023-05-12 2023-03-31 13F PFIZER COM 717081103 148,321 95,186 179.14 6,051 122.30 1.4891
2023-02-14 2022-12-31 13F PFIZER COM 717081103 53,135 1,478 2.86 2,723 20.39 0.7505
2022-11-14 2022-09-30 13F Pfizer COM 717081103 51,657 40,724 372.49 2,261 294.59 0.6459
2022-08-12 2022-06-30 13F Pfizer COM 717081103 10,933 0 0.00 573 1.24 0.1851
2022-05-13 2022-03-31 13F Pfizer COM 717081103 10,933 110 1.02 566 -11.98 0.1625
2022-02-09 2021-12-31 13F Pfizer COM 717081103 10,823 -5,062 -31.87 643 -5.99 0.1507
2021-11-15 2021-09-30 13F Pfizer COM 717081103 15,885 4,083 34.60 684 48.05 0.1553
2021-08-16 2021-06-30 13F Pfizer COM 717081103 11,802 1,670 16.48 462 25.89 0.1070
2021-05-14 2021-03-31 13F Pfizer COM 717081103 10,132 901 9.76 367 8.26 0.0968
2021-02-08 2020-12-31 13F Pfizer COM 717081103 9,231 813 9.66 339 10.06 0.0999
2020-11-16 2020-09-30 13F Pfizer COM 717081103 8,418 501 6.33 308 18.92 0.1121
2020-08-14 2020-06-30 13F Pfizer COM 717081103 7,917 0 0.00 259 0.39 0.0995
2020-05-15 2020-03-31 13F Pfizer COM 717081103 7,917 1 0.01 258 -16.77 0.1185
2020-02-14 2019-12-31 13F Pfizer COM 717081103 7,916 7,916 310 0.1054
2019-11-13 2019-09-30 13F Pfizer COM 717081103 0 -10,878 -100.00 0 -100.00
2019-07-25 2019-06-30 13F Pfizer COM 717081103 10,878 50 0.46 471 2.61 0.1921
2019-05-15 2019-03-31 13F Pfizer COM 717081103 10,828 25 0.23 459 -2.55 0.2050
2019-02-07 2018-12-31 13F Pfizer COM 717081103 10,803 2,889 36.50 471 100.43 0.2338
2016-05-13 2016-03-31 13F Pfizer EQ 717081103 7,914 -2,000 -20.17 235 -26.56 0.1216
2016-02-12 2015-12-31 13F Pfizer EQ 717081103 9,914 -6,500 -39.60 320 -37.98 0.1694
2015-11-12 2015-09-30 13F Pfizer COM 717081103 16,414 0 0.00 516 -6.18 0.2620
2015-08-11 2015-06-30 13F Pfizer COM 717081103 16,414 10 0.06 550 -3.68 0.2536
2015-05-06 2015-03-31 13F Pfizer COM 717081103 16,404 690 4.39 571 16.77 0.2531
2015-02-09 2014-12-31 13F Pfizer COM 717081103 15,714 500 3.29 489 8.67 0.4506
2014-10-30 2014-09-30 13F Pfizer COM 717081103 15,214 0 0.00 450 -0.44 0.4055
2014-08-08 2014-06-30 13F Pfizer COM 717081103 15,214 -8,299 -35.30 452 -40.13 0.3636
2014-04-30 2014-03-31 13F Pfizer COM 717081103 23,513 100 0.43 755 5.30 0.5673
2014-01-28 2013-12-31 13F Pfizer COM 717081103 23,413 -500 -2.09 717 4.37 0.5172
2013-11-04 2013-09-30 13F Pfizer COM 717081103 23,913 0 0.00 687 2.54 0.5901
2013-07-25 2013-06-30 13F Pfizer COM 717081103 23,913 23,913 670 0.5718
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.