Pfizer Inc.
US ˙ NYSE ˙ US7170811035

SecurityPFE / Pfizer Inc.
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership318,106 shares
Latest Disclosed Value $ 8,932,453
Vestmark Advisory Solutions, Inc. reports 667.26% increase in ownership of PFE / Pfizer Inc.

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 318,106 shares of Pfizer Inc. (US:PFE) valued at $8,932,416 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 41,460 shares of Pfizer Inc.. This represents a change in shares of 667.26% during the quarter. The current value of the position is $8,060,806 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)
2026-05-15 2026-03-31 13F PFIZER COM 717081103 318,106 276,646 667.26 8,932 765.50 0.0614
2026-02-06 2025-12-31 13F PFIZER COM 717081103 41,460 21,660 109.39 1,032 104.76 0.0139
2025-11-10 2025-09-30 13F PFIZER COM 717081103 19,800 19,800 504 0.0096
2025-08-06 2025-06-30 13F PFIZER COM 717081103 0 -18,724 -100.00 0 -100.00
2025-05-13 2025-03-31 13F PFIZER COM 717081103 18,724 18,724 474 0.0122
2025-02-06 2024-12-31 13F PFIZER COM 717081103 0 -8,878 -100.00 0 -100.00
2024-11-14 2024-09-30 13F PFIZER COM 717081103 8,878 8,878 257 0.0096
2024-02-06 2023-12-31 13F PFIZER COM 717081103 0 -37,292 -100.00 0 -100.00
2023-11-06 2023-09-30 13F PFIZER COM 717081103 37,292 -157,193 -80.83 1,237 -82.67 0.0899
2023-08-07 2023-06-30 13F PFIZER COM 717081103 194,485 -2,578 -1.31 7,134 -11.28 0.2717
2023-05-09 2023-03-31 13F PFIZER COM 717081103 197,063 10,194 5.46 8,040 -16.03 0.3482
2023-01-20 2022-12-31 13F PFIZER COM 717081103 186,869 6,529 3.62 9,575 21.33 0.4665
2022-11-03 2022-09-30 13F PFIZER COM 717081103 180,340 21,757 13.72 7,892 -5.09 0.4399
2022-08-04 2022-06-30 13F PFIZER COM 717081103 158,583 32,271 25.55 8,315 27.16 0.4749
2022-04-27 2022-03-31 13F PFIZER COM 717081103 126,312 4,304 3.53 6,539 -9.24 0.3701
2022-01-31 2021-12-31 13F PFIZER COM 717081103 122,008 1,510 1.25 7,205 39.01 0.4066
2021-11-15 2021-09-30 13F PFIZER COM 717081103 120,498 10,565 9.61 5,183 20.39 0.3510
2021-08-09 2021-06-30 13F PFIZER COM 717081103 109,933 -5,046 -4.39 4,305 3.34 0.3063
2021-05-10 2021-03-31 13F PFIZER COM 717081103 114,979 -14 -0.01 4,166 -1.58 0.3695
2021-02-04 2020-12-31 13F PFIZER COM 717081103 114,993 3,719 3.34 4,233 3.65 0.4750
2020-10-19 2020-09-30 13F PFIZER COM 717081103 111,274 -15,212 -12.03 4,084 -1.26 0.5487
2020-08-13 2020-06-30 13F PFIZER COM 717081103 126,486 -43,343 -25.52 4,136 -25.38 0.6400
2020-05-06 2020-03-31 13F PFIZER COM 717081103 169,829 7,090 4.36 5,543 -13.06 1.0836
2020-02-14 2019-12-31 13F PFIZER COM 717081103 162,739 5,487 3.49 6,376 12.85 1.3083
2019-11-05 2019-09-30 13F PFIZER COM 717081103 157,252 13,005 9.02 5,650 -9.59 0.9161
2019-08-20 2019-06-30 13F PFIZER COM 717081103 144,247 -13,244 -8.41 6,249 -6.58 1.0693
2019-05-14 2019-03-31 13F PFIZER COM 717081103 157,491 157,491 6,689 1.1927
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.