Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionFirst PREMIER Bank
Latest Disclosed Ownership242 shares
Latest Disclosed Value $ 241
First PREMIER Bank ownership in COST / Costco Wholesale Corporation

On April 20, 2026 - First PREMIER Bank filed a 13F-HR form disclosing ownership of 242 shares of Costco Wholesale Corporation (MX:COST) valued at $241 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 242 shares of Costco Wholesale Corporation.

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)
2026-04-20 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 242 0 0.00 0 0.0270
2026-01-23 2025-12-31 13F COSTCO WHOLESALE COM 22160K105 242 0 0.00 0 0.0479
2025-10-15 2025-09-30 13F COSTCO WHOLESALE COM 22160K105 242 0 0.00 0 0.0509
2025-07-11 2025-06-30 13F COSTCO WHOLESALE COM 22160K105 242 0 0.00 0 0.0579
2025-04-22 2025-03-31 13F COSTCO WHOLESALE COM 22160K105 242 0 0.00 0 0.0579
2025-01-17 2024-12-31 13F COSTCO WHOLESALE COM 22160K105 242 -297 -55.10 0 0.0563
2024-10-08 2024-09-30 13F COSTCO WHOLESALE COM 22160K105 539 206 61.86 0 0.1192
2024-07-17 2024-06-30 13F COSTCO WHOLESALE COM 22160K105 333 -12 -3.48 0 0.0754
2024-04-12 2024-03-31 13F COSTCO WHOLESALE COM 22160K105 345 -23 -6.25 0 0.0666
2024-01-17 2023-12-31 13F COSTCO WHOLESALE COM 22160K105 368 4 1.10 0 0.0684
2023-10-16 2023-09-30 13F COSTCO WHOLESALE COM 22160K105 364 -45 -11.00 0 0.0632
2023-07-13 2023-06-30 13F COSTCO WHOLESALE COM 22160K105 409 377 1,178.12 0 0.0628
2023-04-10 2023-03-31 13F COSTCO WHOLESALE COM 22160K105 32 0 0.00 0 0.0047
2023-01-17 2022-12-31 13F COSTCO WHOLESALE COM 22160K105 32 2 6.67 0 -100.00 0.0045
2022-10-20 2022-09-30 13F COSTCO WHOLESALE COM 22160K105 30 0 0.00 14 0.00 0.0046
2022-07-26 2022-06-30 13F COSTCO WHOLESALE COM 22160K105 30 0 0.00 14 -17.65 0.0042
2022-04-25 2022-03-31 13F COSTCO WHOLESALE COM 22160K105 30 0 0.00 17 0.00 0.0045
2022-01-19 2021-12-31 13F COSTCO WHOLESALE COM 22160K105 30 0 0.00 17 30.77 0.0044
2021-10-12 2021-09-30 13F COSTCO WHOLESALE COM 22160K105 30 0 0.00 13 8.33 0.0037
2021-07-14 2021-06-30 13F COSTCO WHOLESALE COM 22160K105 30 30 12 0.0035
2017-10-13 2017-09-30 13F COSTCO WHOLESALE COM 22160K105 0 -485 -100.00 0 -100.00
2017-07-06 2017-06-30 13F COSTCO WHOLESALE COM 22160K105 485 0 0.00 78 -3.70 0.0586
2017-04-12 2017-03-31 13F COSTCO WHOLESALE COM 22160K105 485 0 0.00 81 3.85 0.0615
2017-01-10 2016-12-31 13F COSTCO WHOLESALE COM 22160K105 485 0 0.00 78 5.41 0.0596
2016-10-13 2016-09-30 13F COSTCO WHOLESALE COM 22160K105 485 -20 -3.96 74 -6.33 0.0558
2016-07-06 2016-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 505 0 0.00 79 -1.25 0.0602
2016-04-08 2016-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 505 0 0.00 80 -2.44 0.0638
2016-01-13 2015-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 505 505 82 0.0694
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.