Winmark Corporation
DE ˙ DB ˙ US9742501029
SecurityDE:GBZ / Winmark Corporation
InstitutionUBS Group AG
Latest Disclosed Ownership14,512 shares
Latest Disclosed Value $ 6,204,605
UBS Group AG reports 15.79% decrease in ownership of GBZ / Winmark Corporation

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 14,512 shares of Winmark Corporation (DE:GBZ) valued at $6,204,605 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 17,234 shares of Winmark Corporation. This represents a change in shares of -15.79% 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)
2026-05-05 2026-03-31 13F WINMARK COM 974250102 14,512 -2,722 -15.79 6,205 -11.09 0.0002
2026-01-29 2025-12-31 13F WINMARK COM 974250102 17,234 -17,656 -50.60 6,979 -59.82 0.0002
2025-11-13 2025-09-30 13F WINMARK COM 974250102 34,890 11,383 48.42 17,367 95.66 0.0027
2025-08-14 2025-06-30 13F WINMARK COM 974250102 23,507 17,780 310.46 8,876 387.69 0.0015
2025-05-13 2025-03-31 13F WINMARK COM 974250102 5,727 -2,079 -26.63 1,820 -40.68 0.0003
2025-02-14 2024-12-31 13F WINMARK COM 974250102 7,806 4,675 149.31 3,068 156.09 0.0006
2024-11-14 2024-09-30 13F WINMARK COM 974250102 3,131 1,617 106.80 1,199 124.77 0.0003
2024-08-14 2024-06-30 13F WINMARK COM 974250102 1,514 -2,390 -61.22 534 -62.25 0.0001
2024-05-13 2024-03-31 13F WINMARK COM 974250102 3,904 -161 -3.96 1,412 -16.79 0.0004
2024-02-09 2023-12-31 13F WINMARK COM 974250102 4,065 2,319 132.82 1,697 160.68 0.0005
2023-11-09 2023-09-30 13F WINMARK COM 974250102 1,746 -477 -21.46 651 -11.91 0.0002
2023-08-11 2023-06-30 13F WINMARK COM 974250102 2,223 734 49.29 739 54.93 0.0002
2023-05-12 2023-03-31 13F WINMARK COM 974250102 1,489 -458 -23.52 477 3.92 0.0002
2023-02-08 2022-12-31 13F WINMARK COM 974250102 1,947 1,810 1,321.17 459 1,430.00 0.0002
2022-11-10 2022-09-30 13F WINMARK COM 974250102 137 26 23.42 30 36.36 0.0000
2022-08-10 2022-06-30 13F WINMARK COM 974250102 111 36 48.00 22 29.41 0.0000
2022-05-16 2022-03-31 13F WINMARK COM 974250102 75 -1,665 -95.69 17 -96.06 0.0000
2022-02-14 2021-12-31 13F WINMARK COM 974250102 1,740 1,059 155.51 432 195.89 0.0001
2021-11-15 2021-09-30 13F WINMARK COM 974250102 681 335 96.82 146 121.21 0.0000
2021-08-13 2021-06-30 13F WINMARK COM 974250102 346 -17,503 -98.06 66 -98.02 0.0000
2021-05-12 2021-03-31 13F WINMARK COM 974250102 17,849 1,113 6.65 3,328 7.01 0.0011
2021-02-11 2020-12-31 13F WINMARK COM 974250102 16,736 14,457 634.36 3,110 693.37 0.0011
2020-11-12 2020-09-30 13F WINMARK COM 974250102 2,279 1,163 104.21 392 105.24 0.0001
2020-07-31 2020-06-30 13F WINMARK COM 974250102 1,116 -1,601 -58.93 191 -44.80 0.0001
2020-05-01 2020-03-31 13F WINMARK COM 974250102 2,717 -987 -26.65 346 -52.86 0.0002
2020-02-14 2019-12-31 13F WINMARK COM 974250102 3,704 1,020 38.00 734 55.18 0.0003
2019-11-14 2019-09-30 13F WINMARK COM 974250102 2,684 1,640 157.09 473 161.33 0.0002
2019-08-14 2019-06-30 13F WINMARK COM 974250102 1,044 982 1,583.87 181 1,408.33 0.0001
2019-05-14 2019-03-31 13F WINMARK COM 974250102 62 -939 -93.81 12 -92.45 0.0000
2019-02-14 2018-12-31 13F WINMARK COM 974250102 1,001 -74 -6.88 159 -10.67 0.0001
2018-11-14 2018-09-30 13F WINMARK COM 974250102 1,075 81 8.15 178 20.27 0.0001
2018-08-14 2018-06-30 13F WINMARK COM 974250102 994 976 5,422.22 148 7,300.00 0.0001
2018-05-15 2018-03-31 13F WINMARK COM 974250102 18 -158 -89.77 2 -91.30 0.0000
2018-02-14 2017-12-31 13F WINMARK COM 974250102 176 -903 -83.69 23 -83.80 0.0000
2017-11-14 2017-09-30 13F WINMARK COM 974250102 1,079 839 349.58 142 358.06 0.0001
2017-11-14 2017-06-30 13F/A-1 WINMARK COM 974250102 240 -297 -55.31 31 -49.18 0.0000
2017-08-14 2017-06-30 13F WINMARK COM 974250102 240 -297 31
2017-11-14 2017-03-31 13F/A-1 WINMARK COM 974250102 537 -599 -52.73 61 -57.34 0.0000
2017-05-12 2017-03-31 13F WINMARK COM 974250102 537 -599 61
2017-02-14 2016-12-31 13F WINMARK COM 974250102 1,136 1,042 1,108.51 143 1,330.00 0.0001
2016-11-14 2016-09-30 13F WINMARK COM 974250102 94 -358 -79.20 10 -77.78 0.0000
2016-08-12 2016-06-30 13F WINMARK COM 974250102 452 267 144.32 45 150.00 0.0000
2016-05-12 2016-03-31 13F WINMARK COM 974250102 185 -406 -68.70 18 -67.27 0.0000
2016-02-16 2015-12-31 13F WINMARK COM 974250102 591 558 1,690.91 55 1,733.33 0.0000
2015-11-13 2015-09-30 13F WINMARK COM 974250102 33 -369 -91.79 3 -92.50 0.0000
2015-08-14 2015-06-30 13F WINMARK COM 974250102 402 -72 -15.19 40 -4.76 0.0000
2015-05-14 2015-03-31 13F WINMARK COM 974250102 474 -43 -8.32 42 -6.67 0.0000
2015-02-17 2014-12-31 13F WINMARK COM 974250102 517 517 45 0.0000
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.