Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionPeoples Financial Services Corp.
Latest Disclosed Ownership667 shares
Latest Disclosed Value $ 664,604
Peoples Financial Services Corp. reports 1.77% decrease in ownership of COST / Costco Wholesale Corporation

On April 20, 2026 - Peoples Financial Services Corp. filed a 13F-HR form disclosing ownership of 667 shares of Costco Wholesale Corporation (MX:COST) valued at $664,604 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 679 shares of Costco Wholesale Corporation. This represents a change in shares of -1.77% 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)
2026-04-20 2026-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 667 -12 -1.77 665 13.50 0.1897
2026-01-26 2025-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 679 -84 -11.01 586 -17.14 0.2731
2025-10-28 2025-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 763 -11 -1.42 706 -7.83 0.3189
2025-07-17 2025-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 774 -312 -28.73 766 -25.41 0.3787
2025-04-30 2025-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,086 0 0.00 1,027 3.22 0.4934
2025-01-14 2024-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,086 0 0.00 995 3.43 0.4610
2024-10-16 2024-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,086 -7 -0.64 963 3.55 0.4362
2024-07-25 2024-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,093 -79 -6.74 929 8.28 0.4202
2024-04-17 2024-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,172 -328 -21.87 859 -13.33 0.3727
2024-01-24 2023-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,500 10 0.67 990 17.72 0.4292
2023-10-13 2023-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,490 23 1.57 842 6.59 0.3965
2023-07-11 2023-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,467 200 15.79 790 25.44 0.3542
2023-04-13 2023-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,267 59 4.88 630 14.16 0.2940
2023-01-12 2022-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,208 10 0.83 551 -2.48 0.2581
2022-10-07 2022-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,198 10 0.84 565 -0.70 0.2915
2022-07-07 2022-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,188 655 122.89 569 85.34 0.2697
2022-04-15 2022-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 533 333 166.50 307 169.30 0.1328
2022-01-19 2021-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 114 26.67 0.0443
2021-10-15 2021-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 90 13.92 0.0380
2021-07-14 2021-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 79 12.86 0.0331
2021-04-15 2021-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 70 -6.67 0.0304
2021-01-12 2020-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 75 5.63 0.0345
2020-10-07 2020-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 71 16.39 0.0357
2020-07-10 2020-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 61 7.02 0.0321
2020-04-09 2020-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 57 -3.39 0.0335
2020-01-17 2019-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 59 1.72 0.0278
2019-10-16 2019-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 58 9.43 0.0290
2019-07-11 2019-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 0 0.00 53 10.42 0.0269
2019-04-18 2019-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 -30 -13.04 48 2.13 0.0245
2019-01-14 2018-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 230 0 0.00 47 -12.96 0.0267
2018-10-12 2018-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 230 30 15.00 54 28.57 0.0273
2018-07-10 2018-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 200 100 100.00 42 121.05 0.0235
2018-04-25 2018-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 100 0 0.00 19 0.00 0.0109
2018-01-17 2017-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 100 100 19 0.0104
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.