Pfizer Inc.
CL ˙ SNSE ˙ US7170811035
SecurityCL:PFE / Pfizer Inc.
InstitutionAssetmark, Inc
Latest Disclosed Ownership758,170 shares
Latest Disclosed Value $ 21,289,408
Assetmark, Inc reports 69.83% decrease in ownership of PFE / Pfizer Inc.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 758,170 shares of Pfizer Inc. (CL:PFE) valued at $21,289,408 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 2,513,315 shares of Pfizer Inc.. This represents a change in shares of -69.83% 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 758,170 -1,755,145 -69.83 21,289 -65.98 0.0434
2026-01-23 2025-12-31 13F PFIZER COM 717081103 2,513,315 84,848 3.49 62,582 1.14 0.1276
2025-11-06 2025-09-30 13F PFIZER COM 717081103 2,428,467 193,859 8.68 61,877 14.24 0.1326
2025-08-04 2025-06-30 13F PFIZER COM 717081103 2,234,608 195,624 9.59 54,167 4.84 0.1279
2025-05-06 2025-03-31 13F PFIZER COM 717081103 2,038,984 -1,614,128 -44.19 51,668 -46.69 0.1419
2025-02-06 2024-12-31 13F PFIZER COM 717081103 3,653,112 -46,151 -1.25 96,917 -9.47 0.2633
2024-11-01 2024-09-30 13F PFIZER COM 717081103 3,699,263 103,548 2.88 107,057 6.41 0.3066
2024-08-13 2024-06-30 13F PFIZER COM 717081103 3,595,715 124,574 3.59 100,608 4.45 0.3112
2024-05-07 2024-03-31 13F PFIZER COM 717081103 3,471,141 -674,601 -16.27 96,324 -19.30 0.3132
2024-02-09 2023-12-31 13F PFIZER COM 717081103 4,145,742 -838,495 -16.82 119,356 -27.81 0.4313
2023-10-27 2023-09-30 13F PFIZER COM 717081103 4,984,237 -81,335 -1.61 165,327 -11.02 0.6611
2023-08-11 2023-06-30 13F PFIZER INC COM COM 717081103 5,065,572 34,851 0.69 185,805 -9.48 0.7289
2023-05-05 2023-03-31 13F PFIZER INC COM COM 717081103 5,030,721 1,110,210 28.32 205,253 2.17 0.8486
2023-02-10 2022-12-31 13F PFIZER COM 717081103 3,920,511 91,217 2.38 200,887 19.88 0.8708
2022-11-01 2022-09-30 13F PFIZER COM 717081103 3,829,294 506,338 15.24 167,570 -3.82 0.7835
2022-08-03 2022-06-30 13F PFIZER INC COM COM 717081103 3,322,956 43,643 1.33 174,223 2.62 0.7810
2022-05-13 2022-03-31 13F PFIZER INC COM COM 717081103 3,279,313 117,967 3.73 169,770 -9.06 0.7105
2022-02-14 2021-12-31 13F PFIZER INC COM COM 717081103 3,161,346 699,270 28.40 186,677 76.29 0.7670
2021-11-12 2021-09-30 13F PFIZER INC COM COM 717081103 2,462,076 -31,926 -1.28 105,894 8.43 0.4744
2021-08-16 2021-06-30 13F PFIZER INC COM COM 717081103 2,494,002 34,962 1.42 97,665 9.62 0.4529
2021-05-14 2021-03-31 13F PFIZER COM 717081103 2,459,040 166,206 7.25 89,091 5.56 0.4595
2021-02-10 2020-12-31 13F PFIZER INC COM COM 717081103 2,292,834 220,771 10.65 84,399 10.99 0.4702
2020-11-13 2020-09-30 13F PFIZER INC COM COM 717081103 2,072,063 157,525 8.23 76,045 18.06 0.4907
2020-08-11 2020-06-30 13F PFIZER INC COM COM 717081103 1,914,538 413,001 27.51 64,412 31.43 0.4608
2020-05-12 2020-03-31 13F PFIZER INC COM COM 717081103 1,501,537 1,258,724 518.39 49,010 415.19 0.4150
2020-02-11 2019-12-31 13F PFIZER INC COM COM 717081103 242,813 174,508 255.48 9,513 287.65 0.0723
2019-11-13 2019-09-30 13F PFIZER INC COM COM 717081103 68,305 30 0.04 2,454 -17.04 0.0205
2019-08-14 2019-06-30 13F PFIZER INC COM COM 717081103 68,275 -757,040 -91.73 2,958 -91.56 0.0241
2019-05-14 2019-03-31 13F PFIZER INC COM COM 717081103 825,315 134,568 19.48 35,051 16.25 0.3166
2019-02-13 2018-12-31 13F PFIZER INC COM COM 717081103 690,747 644,490 1,393.28 30,151 1,378.72 0.2911
2018-11-13 2018-09-30 13F PFIZER INC COM COM 717081103 46,257 -3 -0.01 2,039 21.51 0.0185
2018-08-01 2018-06-30 13F PFIZER INC COM COM 717081103 46,260 -2,370 -4.87 1,678 -2.78 0.0165
2018-05-16 2018-03-31 13F PFIZER INC COM COM 717081103 48,630 -25,785 -34.65 1,726 -35.96 0.0179
2018-02-13 2017-12-31 13F PFIZER INC COM COM 717081103 74,415 30,301 68.69 2,695 71.11 0.0278
2017-11-08 2017-09-30 13F PFIZER INC COM COM 717081103 44,114 -45,418 -50.73 1,575 -47.62 0.0179
2017-08-14 2017-06-30 13F PFIZER INC COM COM 717081103 89,532 13,460 17.69 3,007 15.52 0.0378
2017-09-15 2017-03-31 13F/A-1 PFIZER INC COM COM 717081103 76,072 39,903 110.32 2,603 121.72 0.0342
2017-05-08 2017-03-31 13F PFIZER INC COM COM 717081103 76,072 39,903 2,603
2017-09-15 2016-12-31 13F/A-1 PFIZER INC COM COM 717081103 36,169 -1,750 -4.62 1,174 -8.64 0.0172
2017-02-14 2016-12-31 13F PFIZER INC COM COM 717081103 36,169 -1,750 1,174
2017-09-14 2016-09-30 13F/A-1 PFIZER INC COM COM 717081103 37,919 2,216 6.21 1,285 2.23 0.0195
2016-11-04 2016-09-30 13F PFIZER INC COM COM 717081103 37,919 2,216 1,285
2017-09-14 2016-06-30 13F/A-1 PFIZER INC COM COM 717081103 35,703 10,348 40.81 1,257 67.15 0.0211
2016-08-08 2016-06-30 13F PFIZER INC COM COM 717081103 35,703 10,348 1,257
2017-09-14 2016-03-31 13F/A-1 PFIZER INC COM COM 717081103 25,355 -34,113 -57.36 752 -60.83 0.0131
2016-05-13 2016-03-31 13F PFIZER INC COM COM 717081103 25,355 25,307 752
2017-09-14 2015-12-31 13F/A-1 PFIZER INC COM COM 717081103 59,468 42,600 252.55 1,920 262.26 0.0356
2016-02-12 2015-12-31 13F PFIZER INC COM COM 717081103 59,468 42,600 1,920
2016-01-05 2015-09-30 13F/A-1 PFIZER INC COM COM 717081103 16,868 -4,011 -19.21 530 -24.29 0.0111
2015-11-10 2015-09-30 13F PFIZER INC COM COM 717081103 16,868 530
2015-08-13 2015-06-30 13F PFIZER INC COM COM 717081103 20,879 -24,234 -53.72 700 -55.39 0.0146
2015-05-12 2015-03-31 13F PFIZER INC COM COM 717081103 45,113 45,113 0.00 1,569 0.0334
2015-02-03 2014-12-31 13F PFIZER INC COM COM 717081103 0 -79,338 -100.00 0 -100.00
2014-11-10 2014-09-30 13F PFIZER INC COM COM 717081103 79,338 8,822 12.51 2,346 12.09 0.0542
2014-08-12 2014-06-30 13F PFIZER INC COM COM 717081103 70,516 50,977 260.90 2,093 233.28 0.0446
2014-05-06 2014-03-31 13F PFIZER INC COM COM 717081103 19,539 -631 -3.13 628 1.62 0.0153
2014-02-11 2013-12-31 13F PFIZER INC COM COM 717081103 20,170 -122,901 -85.90 618 -84.96 0.0146
2014-02-11 2013-09-30 13F/A-1 PFIZER INC COM COM 717081103 143,071 143,071 4,110 0.1038
2013-11-14 2013-09-30 13F PFIZER INC COM COM 717081103 143,071 4,110 0.1038
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.