PFE — PFIZER INC COM

Ownership history in Walleye Trading LLC  ·  165 quarters on record

AI Ownership Summary

Walleye Trading LLC reported PFIZER INC COM (PFE) in 165 quarterly 13F filings from 2023 Q3 through 2025 Q4. Peak portfolio weight reached 0.13% in 2025 Q1. The latest visible filing shows PFE at 0.06% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this PFE ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Walleye Trading LLC's position in PFIZER INC COM, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

PFE was reported at 0.06% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.13% in 2025 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q3 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

PFE stock page Walleye Trading LLC fund profile Walleye Trading LLC full holdings
How Walleye Trading LLC held PFE — position size vs. price
% of Fund (quarterly)    PFE price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 29 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 REDUCED 1,693,900 -268,600 -13.7% 0.06% $42.2M 2026-02-14 (Est.) $27.58
2025 Q4 ADDED 1,962,500 +1,342,093 +216.3% 0.07% $48.9M 2026-02-14 (Est.) $27.58
2025 Q3 REDUCED 620,407 -1,296,193 -67.6% 0.02% $15.8M 2025-11-14 $24.65
2025 Q3 ADDED 1,916,600 +1,094,500 +133.1% 0.07% $48.8M 2025-11-14 $24.65
2025 Q3 ADDED 822,100 +295,586 +56.1% 0.03% $20.9M 2025-11-14 $24.65
2025 Q2 REDUCED 526,514 -1,412,886 -72.9% 0.02% $12.8M 2025-08-13 $24.32
2025 Q2 ADDED 1,939,400 +917,600 +89.8% 0.09% $47.0M 2025-08-13 $24.32
2025 Q2 ADDED 1,021,800 +661,715 +183.8% 0.04% $24.8M 2025-08-13 $24.32
2025 Q1 REDUCED 360,085 -1,833,915 -83.6% 0.02% $9.1M 2025-05-14 $20.92
2025 Q1 ADDED 2,194,000 +681,800 +45.1% 0.13% $55.6M 2025-05-14 $20.92
2025 Q1 ADDED 1,512,200 +1,329,853 +729.3% 0.09% $38.3M 2025-05-14 $20.92
2024 Q4 REDUCED 182,347 -1,067,553 -85.4% 0.01% $4.8M 2025-02-13 $23.90
2024 Q4 ADDED 1,249,900 +562,800 +81.9% 0.07% $33.2M 2025-02-13 $23.90
2024 Q4 ADDED 687,100 +623,728 +984.2% 0.04% $18.2M 2025-02-13 $23.90
2024 Q3 REDUCED 63,372 -1,295,528 -95.3% 0.00% $1.8M 2024-11-14 $23.86
2024 Q3 ADDED 1,358,900 +581,300 +74.8% 0.08% $39.3M 2024-11-14 $23.86
2024 Q3 ADDED 777,600 +658,475 +552.8% 0.05% $22.5M 2024-11-14 $23.86
2024 Q2 REDUCED 119,125 -957,875 -88.9% 0.01% $3.3M 2024-08-14 $26.08
2024 Q2 ADDED 1,077,000 +54,200 +5.3% 0.07% $30.1M 2024-08-14 $26.08
2024 Q2 ADDED 1,022,800 +828,522 +426.5% 0.07% $28.6M 2024-08-14 $26.08
2024 Q1 REDUCED 194,278 -927,922 -82.7% 0.01% $5.4M 2024-05-15 $25.67
2024 Q1 ADDED 1,122,200 +391,900 +53.7% 0.07% $31.1M 2024-05-15 $25.67
2024 Q1 ADDED 730,300 +474,709 +185.7% 0.04% $20.3M 2024-05-15 $25.67
2023 Q4 REDUCED 255,591 -333,809 -56.6% 0.02% $7.4M 2024-02-14 $23.78
2023 Q4 REDUCED 589,400 -416,100 -41.4% 0.04% $17.0M 2024-02-14 $23.78
2023 Q4 ADDED 1,005,500 +769,292 +325.7% 0.06% $28.9M 2024-02-14 $23.78
2023 Q3 REDUCED 236,208 -183,292 -43.7% 0.02% $7.8M 2023-11-14 $25.29
2023 Q3 REDUCED 419,500 -322,000 -43.4% 0.04% $13.9M 2023-11-14 $25.29
2023 Q3 ADDED 741,500 +542,664 +272.9% 0.07% $24.6M 2023-11-14 $25.29
136 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding PFE

As of 2025 Q4 — sorted by position size

Talaria Asset Management Pty Ltd 8.49% Patrick Mauro Investment Advisor, INC. 3Y 6.24% SECTOR GAMMA AS 3Y 7Y 4.88% WILSEY ASSET MANAGEMENT INC 3Y 7Y 4.62% CONTINENTAL ADVISORS LLC 3Y 7Y 4.22% Round Hill Asset Management 3Y 7Y 3.88% Corecam Pte. Ltd. 3.82% America First Investment Advisors, LLC 3Y 7Y 3.79% Drystone LLC 3Y 3.72% Socorro Asset Management LP 3Y 3.68%

FAQ About Walleye Trading LLC and PFE

These are the practical questions this page is built to answer before you even open the full history table.

How long has Walleye Trading LLC reported owning PFE?

Walleye Trading LLC reported PFE across 29 quarterly 13F filings, from 2023 Q3 through 2025 Q4.

What was the largest reported PFE position in Walleye Trading LLC's portfolio?

The largest reported portfolio weight for PFE was 0.13% in 2025 Q1.

What is the latest reported PFE position on this page?

The most recent filing on this page is 2025 Q4, when Walleye Trading LLC reported 1,693,900 shares, equal to 0.06% of portfolio, with an estimated market value of $42.2M.

What does the chart on this PFE ownership page compare?

The chart compares Walleye Trading LLC's quarterly PFE portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

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