Pfizer Inc.
US ˙ NYSE ˙ US7170811035

SecurityPFE / Pfizer Inc.
InstitutionClean Yield Group
Latest Disclosed Ownership6,823 shares
Latest Disclosed Value $ 191,590
Clean Yield Group reports 22.96% decrease in ownership of PFE / Pfizer Inc.

On April 14, 2026 - Clean Yield Group filed a 13F-HR form disclosing ownership of 6,823 shares of Pfizer Inc. (US:PFE) valued at $191,590 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 8,856 shares of Pfizer Inc.. This represents a change in shares of -22.96% during the quarter. The current value of the position is $172,895 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)
2026-04-14 2026-03-31 13F PFIZER INC COM Stock 717081103 6,823 -2,033 -22.96 192 -13.18 0.0539
2026-01-26 2025-12-31 13F PFIZER INC COM Stock 717081103 8,856 -562 -5.97 221 -7.95 0.0612
2025-10-23 2025-09-30 13F PFIZER INC COM Stock 717081103 9,418 150 1.62 240 6.70 0.0678
2025-07-17 2025-06-30 13F PFIZER INC COM Stock 717081103 9,268 -970 -9.47 225 -13.51 0.0672
2025-04-14 2025-03-31 13F PFIZER INC COM Stock 717081103 10,238 -3,666 -26.37 259 -29.62 0.0845
2025-01-13 2024-12-31 13F PFIZER INC COM Stock 717081103 13,904 -265 -1.87 369 -10.24 0.1173
2024-10-07 2024-09-30 13F PFIZER INC COM Stock 717081103 14,169 -885 -5.88 410 -2.61 0.1299
2024-07-10 2024-06-30 13F PFIZER INC COM Stock 717081103 15,054 0 0.00 421 0.96 0.1573
2024-05-29 2024-03-31 13F PFIZER INC COM Stock 717081103 15,054 -200 -1.31 418 -5.01 0.1625
2024-01-24 2023-12-31 13F PFIZER INC COM Stock 717081103 15,254 -379 -2.42 439 -15.09 0.1850
2023-10-12 2023-09-30 13F PFIZER INC COM Stock 717081103 15,633 2,951 23.27 518 11.18 0.2294
2023-07-26 2023-06-30 13F PFIZER INC COM Stock 717081103 12,682 -238 -1.84 465 -11.76 0.1916
2023-04-26 2023-03-31 13F PFIZER INC COM Stock 717081103 12,920 -1,720 -11.75 527 -29.73 0.2245
2023-01-31 2022-12-31 13F PFIZER INC COM Stock 717081103 14,640 628 4.48 750 22.35 0.3222
2022-10-31 2022-09-30 13F PFIZER INC COM Stock 717081103 14,012 250 1.82 613 -15.10 0.2845
2022-07-18 2022-06-30 13F PFIZER INC COM Stock 717081103 13,762 -270 -1.92 722 -0.55 0.2984
2022-04-25 2022-03-31 13F PFIZER INC COM Stock 717081103 14,032 -1,503 -9.67 726 -20.83 0.2564
2022-01-24 2021-12-31 13F PFIZER INC COM Stock 717081103 15,535 205 1.34 917 39.15 0.2931
2021-10-27 2021-09-30 13F PFIZER INC COM Stock 717081103 15,330 562 3.81 659 14.01 0.2162
2021-07-26 2021-06-30 13F PFIZER INC COM Stock 717081103 14,768 606 4.28 578 12.67 0.1964
2021-04-26 2021-03-31 13F PFIZER INC COM Stock 717081103 14,162 -4,541 -24.28 513 -25.44 0.1930
2021-01-26 2020-12-31 13F PFIZER INC COM Stock 717081103 18,703 -673 -3.47 688 -3.23 0.2473
2020-10-16 2020-09-30 13F PFIZER INC COM Stock 717081103 19,376 -580 -2.91 711 8.88 0.2883
2020-07-22 2020-06-30 13F PFIZER INC COM Stock 717081103 19,956 0 0.00 653 0.31 0.2822
2020-04-20 2020-03-31 13F PFIZER INC COM Stock 717081103 19,956 -20,450 -50.61 651 -58.88 0.3092
2020-01-17 2019-12-31 13F PFIZER INC COM Stock 717081103 40,406 2,759 7.33 1,583 17.00 0.4962
2019-10-23 2019-09-30 13F PFIZER INC COM Stock 717081103 37,647 -878 -2.28 1,353 -18.93 0.4462
2019-07-22 2019-06-30 13F PFIZER INC COM Stock 717081103 38,525 981 2.61 1,669 4.71 0.6032
2019-04-24 2019-03-31 13F PFIZER INC COM Stock 717081103 37,544 -448 -1.18 1,594 -3.86 0.6453
2019-01-23 2018-12-31 13F PFIZER INC COM Stock 717081103 37,992 -26,383 -40.98 1,658 -41.56 0.7218
2018-10-22 2018-09-30 13F PFIZER INC COM Stock 717081103 64,375 1,170 1.85 2,837 23.72 1.1292
2018-07-24 2018-06-30 13F PFIZER INC COM Stock 717081103 63,205 624 1.00 2,293 3.24 0.9497
2018-04-23 2018-03-31 13F PFIZER INC COM Stock 717081103 62,581 5,461 9.56 2,221 7.35 0.9379
2018-01-16 2017-12-31 13F PFIZER INC COM Stock 717081103 57,120 -675 -1.17 2,069 0.29 0.8191
2017-10-11 2017-09-30 13F PFIZER INC COM Stock 717081103 57,795 0 0.00 2,063 6.78 0.8415
2017-07-17 2017-06-30 13F PFIZER INC COM Stock 717081103 57,795 -271 -0.47 1,932 -2.72 0.8082
2017-05-03 2017-03-31 13F PFIZER INC COM Stock 717081103 58,066 5,977 11.47 1,986 17.38 0.8367
2017-01-24 2016-12-31 13F PFIZER INC COM Stock 717081103 52,089 270 0.52 1,692 -3.59 0.7631
2016-10-28 2016-09-30 13F PFIZER INC COM Stock 717081103 51,819 271 0.53 1,755 -3.31 0.7629
2016-07-27 2016-06-30 13F PFIZER INC COM Stock 717081103 51,548 -100 -0.19 1,815 7.91 0.7791
2016-04-15 2016-03-31 13F PFIZER INC COM Stock 717081103 51,648 -600 -1.15 1,682 5.45 0.7478
2016-01-27 2015-12-31 13F PFIZER INC COM Stock 717081103 52,248 -150 -0.29 1,595 -14.16 0.7870
2015-10-29 2015-09-30 13F PFIZER INC COM Stock 717081103 52,398 -50 -0.10 1,858 5.63 0.8762
2015-07-31 2015-06-30 13F PFIZER INC COM Stock 717081103 52,448 -356 -0.67 1,759 -4.25 0.8081
2015-04-24 2015-03-31 13F PFIZER INC COM Stock 717081103 52,804 52,804 0.00 1,837 0.7875
2015-01-29 2014-12-31 13F Pfizer COM 717081103 0 -51,191 -100.00 0 -100.00
2014-10-27 2014-09-30 13F Pfizer COM 717081103 51,191 0 0.00 1,514 -0.33 0.7271
2014-07-21 2014-06-30 13F Pfizer COM 717081103 51,191 1,674 3.38 1,519 -4.47 0.7505
2014-04-24 2014-03-31 13F Pfizer COM 717081103 49,517 0 0.00 1,590 4.81 0.8222
2014-01-31 2013-12-31 13F Pfizer COM 717081103 49,517 -203 -0.41 1,517 6.23 0.8119
2013-10-24 2013-09-30 13F Pfizer COM 717081103 49,720 0 0.00 1,428 2.51 0.7734
2013-10-24 2013-06-30 13F Pfizer COM 717081103 49,720 49,720 1,393 0.7963
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.