Pfizer Inc.
US ˙ NYSE ˙ US7170811035

SecurityPFE / Pfizer Inc.
InstitutionChicago Capital, LLC
Latest Disclosed Ownership75,495 shares
Latest Disclosed Value $ 2,119,908
Chicago Capital, LLC reports 32.36% decrease in ownership of PFE / Pfizer Inc.

On April 23, 2026 - Chicago Capital, LLC filed a 13F-HR form disclosing ownership of 75,495 shares of Pfizer Inc. (US:PFE) valued at $2,119,900 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 111,620 shares of Pfizer Inc.. This represents a change in shares of -32.36% during the quarter. The current value of the position is $1,913,043 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)
2026-04-23 2026-03-31 13F PFIZER COM 717081103 75,495 -36,125 -32.36 2,120 -23.75 0.0572
2026-01-26 2025-12-31 13F PFIZER COM 717081103 111,620 1,227 1.11 2,779 -1.17 0.0686
2025-10-22 2025-09-30 13F PFIZER COM 717081103 110,393 2,317 2.14 2,813 7.37 0.0692
2025-07-17 2025-06-30 13F PFIZER COM 717081103 108,076 10,701 10.99 2,620 6.16 0.0647
2025-04-17 2025-03-31 13F PFIZER COM 717081103 97,375 27,206 38.77 2,467 32.56 0.0697
2025-01-24 2024-12-31 13F PFIZER COM 717081103 70,169 -5,726 -7.54 1,862 -15.26 0.0494
2024-10-18 2024-09-30 13F PFIZER COM 717081103 75,895 698 0.93 2,196 4.37 0.0610
2024-08-06 2024-06-30 13F PFIZER COM 717081103 75,197 2,575 3.55 2,104 4.42 0.0626
2024-04-15 2024-03-31 13F PFIZER COM 717081103 72,622 -3,084 -4.07 2,015 -7.53 0.0614
2024-01-22 2023-12-31 13F PFIZER COM 717081103 75,706 -5,607 -6.90 2,180 -19.21 0.0785
2023-10-25 2023-09-30 13F PFIZER COM 717081103 81,313 -396 -0.48 2,697 -10.01 0.1262
2023-07-20 2023-06-30 13F PFIZER COM 717081103 81,709 105 0.13 2,997 -9.97 0.1351
2023-04-18 2023-03-31 13F PFIZER COM 717081103 81,604 198 0.24 3,329 -20.19 0.1657
2023-01-20 2022-12-31 13F PFIZER COM 717081103 81,406 -360 -0.44 4,171 16.57 0.2308
2022-10-14 2022-09-30 13F PFIZER COM 717081103 81,766 60 0.07 3,578 -16.48 0.2069
2022-07-21 2022-06-30 13F PFIZER COM 717081103 81,706 2,980 3.79 4,284 5.10 0.2367
2022-04-21 2022-03-31 13F PFIZER COM 717081103 78,726 1,240 1.60 4,076 -10.93 0.1754
2022-01-20 2021-12-31 13F PFIZER COM 717081103 77,486 168 0.22 4,576 37.62 0.1704
2021-10-28 2021-09-30 13F PFIZER COM 717081103 77,318 790 1.03 3,325 10.94 0.1261
2021-07-22 2021-06-30 13F PFIZER COM 717081103 76,528 100 0.13 2,997 8.23 0.1171
2021-04-13 2021-03-31 13F PFIZER COM 717081103 76,428 825 1.09 2,769 -0.50 0.1169
2021-01-25 2020-12-31 13F PFIZER COM 717081103 75,603 2,803 3.85 2,783 4.15 0.1243
2020-10-13 2020-09-30 13F PFIZER COM 717081103 72,800 -3,900 -5.08 2,672 6.54 0.1374
2020-07-29 2020-06-30 13F PFIZER COM 717081103 76,700 3,300 4.50 2,508 4.67 0.1453
2020-04-21 2020-03-31 13F PFIZER COM 717081103 73,400 -305 -0.41 2,396 -17.04 0.1932
2020-01-14 2019-12-31 13F PFIZER COM 717081103 73,705 -660 -0.89 2,888 8.08 0.1762
2019-10-28 2019-09-30 13F PFIZER COMMON 717081103 74,365 0 0.00 2,672 -17.04 0.1790
2019-07-11 2019-06-30 13F PFIZER COMMON 717081103 74,365 -170 -0.23 3,221 1.74 0.2060
2019-04-23 2019-03-31 13F PFIZER COMMON 717081103 74,535 120 0.16 3,166 -2.52 0.2152
2019-02-11 2018-12-31 13F PFIZER COM 717081103 74,415 11,013 17.37 3,248 16.25 0.2649
2018-11-02 2018-09-30 13F PFIZER COM 717081103 63,402 -325 -0.51 2,794 20.85 0.1933
2018-07-19 2018-06-30 13F PFIZER COM 717081103 63,727 7,892 14.13 2,312 16.65 0.1864
2018-05-09 2018-03-31 13F Pfizer COM 717081103 55,835 55,835 1,982 0.2645
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.