Pfizer Inc.
US ˙ NYSE ˙ US7170811035

SecurityPFE / Pfizer Inc.
InstitutionSummit Trail Advisors, Llc
Latest Disclosed Ownership218,158 shares
Latest Disclosed Value $ 6,125,882
Summit Trail Advisors, Llc reports 3.34% decrease in ownership of PFE / Pfizer Inc.

On May 12, 2026 - Summit Trail Advisors, Llc filed a 13F-HR form disclosing ownership of 218,158 shares of Pfizer Inc. (US:PFE) valued at $6,125,877 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 225,690 shares of Pfizer Inc.. This represents a change in shares of -3.34% during the quarter. The current value of the position is $5,528,124 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)
2026-05-12 2026-03-31 13F PFIZER COM 717081103 218,158 -7,532 -3.34 6,126 9.01 0.0878
2026-02-17 2025-12-31 13F PFIZER COM 717081103 225,690 2,670 1.20 5,620 -1.11 0.0972
2025-11-14 2025-09-30 13F PFIZER COM 717081103 223,020 52,489 30.78 5,683 37.48 0.0785
2025-08-14 2025-06-30 13F PFIZER COM 717081103 170,531 170,531 4,134 0.0709
2025-01-29 2024-12-31 13F PFIZER COM 717081103 0 -113,684 -100.00 0 -100.00
2024-11-12 2024-09-30 13F PFIZER COM 717081103 113,684 -22,057 -16.25 3,290 -13.38 0.0816
2024-08-13 2024-06-30 13F Pfizer Inc Com COM 717081103 135,741 77,293 132.24 3,798 134.30 0.0998
2024-04-23 2024-03-31 13F PFIZER COM 717081103 58,448 13,510 30.06 1,622 25.37 0.0431
2024-02-06 2023-12-31 13F PFIZER COM 717081103 44,938 -17,217 -27.70 1,294 -37.26 0.0428
2023-10-30 2023-09-30 13F PFIZER COM 717081103 62,155 239 0.39 2,062 -9.25 0.0758
2023-07-25 2023-06-30 13F PFIZER COM 717081103 61,916 12,971 26.50 2,271 13.78 0.0857
2023-05-04 2023-03-31 13F PFIZER COM 717081103 48,945 5,547 12.78 1,997 -10.21 0.0804
2023-02-07 2022-12-31 13F Pfizer Inc Com COM 717081103 43,398 4,634 11.95 2,224 31.07 0.0988
2022-11-10 2022-09-30 13F Pfizer Inc Com Stock 717081103 38,764 -4,033 -9.42 1,696 -24.42 0.0917
2022-08-09 2022-06-30 13F Pfizer Inc Com COM 717081103 42,797 10,734 33.48 2,244 35.18 0.1387
2022-05-16 2022-03-31 13F Pfizer Inc Com EQUITY 717081103 32,063 4,724 17.28 1,660 2.85 0.1343
2022-02-11 2021-12-31 13F Pfizer Inc Com Equity 717081103 27,339 587 2.19 1,614 40.23 0.1041
2021-11-16 2021-09-30 13F Pfizer Inc Com COM 717081103 26,752 2,400 9.86 1,151 20.65 0.0864
2021-08-16 2021-06-30 13F Pfizer Inc Com Equity 717081103 24,352 699 2.96 954 11.32 0.0836
2021-05-17 2021-03-31 13F PFIZER Equity 717081103 23,653 -1,680 -6.63 857 -8.15 0.0924
2021-02-16 2020-12-31 13F PFIZER Equity 717081103 25,333 25,333 933 0.1176
2020-11-16 2020-09-30 13F/A-1 Pfizer Inc Com Equity 717081103 0 -23,161 -100.00 0 -100.00
2020-08-13 2020-06-30 13F Pfizer Inc Com Equity 717081103 23,161 936 4.21 757 4.41 0.1412
2020-05-15 2020-03-31 13F Pfizer Inc Com Equity 717081103 22,225 22,225 725 0.1951
2020-02-13 2019-12-31 13F Pfizer Inc Com Equity 717081103 0 -18,891 -100.00 0 -100.00
2019-11-14 2019-09-30 13F Pfizer Inc Com Equity 717081103 18,891 2,514 15.35 679 -4.23 0.2414
2019-08-08 2019-06-30 13F PFIZER INC COM EQUITY 717081103 16,377 617 3.91 709 5.98 0.3100
2019-05-16 2019-03-31 13F PFIZER INC COM EQUITY 717081103 15,760 -44,412 -73.81 669 -54.67 0.2895
2018-05-22 2018-03-31 13F/A-1 PFIZER INC COM EQUITY 717081103 60,172 13,383 28.60 1,476 -14.29 0.2505
2018-05-21 2018-03-31 13F PFIZER INC COM EQUITY 717081103 1,476,082 1,476,023 1,476
2018-02-14 2017-12-31 13F PFIZER EQUITY 717081103 46,789 46,789 1,722 0.2175
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.