Winmark Corporation
DE ˙ DB ˙ US9742501029
SecurityDE:GBZ / Winmark Corporation
InstitutionWealthCollab, LLC
Latest Disclosed Ownership89 shares
Latest Disclosed Value $ 38,052
WealthCollab, LLC reports 2.30% increase in ownership of GBZ / Winmark Corporation

On May 13, 2026 - WealthCollab, LLC filed a 13F-HR form disclosing ownership of 89 shares of Winmark Corporation (DE:GBZ) valued at $38,052 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 87 shares of Winmark Corporation. This represents a change in shares of 2.30% 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)
2026-05-13 2026-03-31 13F WINMARK COM 974250102 89 2 2.30 38 8.57 0.0131
2026-01-27 2025-12-31 13F WINMARK COM 974250102 87 -12 -12.12 35 -28.57 0.0144
2025-11-13 2025-09-30 13F WINMARK COM 974250102 99 12 13.79 49 53.13 0.0226
2025-08-15 2025-06-30 13F WINMARK COM 974250102 87 0 0.00 33 18.52 0.0184
2025-05-14 2025-03-31 13F WINMARK COM 974250102 87 -21 -19.44 28 -35.71 0.0171
2025-02-14 2024-12-31 13F WINMARK COM 974250102 108 2 1.89 42 5.00 0.0271
2024-11-14 2024-09-30 13F WINMARK COM 974250102 106 -44 -29.33 41 -23.08 0.0266
2024-08-14 2024-06-30 13F/A-1 WINMARK COM 974250102 150 -2 -1.32 53 -3.70 0.0380
2024-08-13 2024-06-30 13F WINMARK COM 974250102 152 0 55 0.0365
2024-05-10 2024-03-31 13F WINMARK COM 974250102 152 -2 -1.30 55 -15.62 0.0406
2024-04-03 2023-12-31 13F WINMARK COM 974250102 154 154 64 0.0502
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.