코스트코 도매공사
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionConfluence Wealth Services, Inc.
Latest Disclosed Ownership6,673 shares
Latest Disclosed Value $ 6,648,685
Confluence Wealth Services, Inc. reports 8.82% increase in ownership of COST / Costco Wholesale Corporation

On May 7, 2026 - Confluence Wealth Services, Inc. filed a 13F-HR form disclosing ownership of 6,673 shares of Costco Wholesale Corporation (MX:COST) valued at $6,648,685 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 6,132 shares of Costco Wholesale Corporation. This represents a change in shares of 8.82% 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)
2026-05-07 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 6,673 541 8.82 6,649 25.74 0.2578
2026-01-28 2025-12-31 13F COSTCO WHOLESALE COM 22160K105 6,132 -35 -0.57 5,287 -7.36 0.2190
2025-10-28 2025-09-30 13F COSTCO WHOLESALE COM 22160K105 6,167 101 1.67 5,708 -4.95 0.2812
2025-07-22 2025-06-30 13F COSTCO WHOLESALE COM 22160K105 6,066 -3 -0.05 6,005 1.38 0.3276
2025-04-24 2025-03-31 13F COSTCO WHOLESALE COM 22160K105 6,069 1,417 30.46 5,922 35.14 0.3732
2025-01-27 2024-12-31 13F COSTCO WHOLESALE COM 22160K105 4,652 134 2.97 4,383 9.44 0.2850
2024-10-29 2024-09-30 13F COSTCO WHOLESALE COM 22160K105 4,518 134 3.06 4,005 7.46 0.2929
2024-07-31 2024-06-30 13F COSTCO WHOLESALE COM 22160K105 4,384 95 2.21 3,727 18.59 0.2970
2024-04-22 2024-03-31 13F COSTCO WHOLESALE COM 22160K105 4,289 226 5.56 3,142 17.20 0.2773
2024-01-25 2023-12-31 13F COSTCO WHOLESALE COM 22160K105 4,063 221 5.75 2,682 23.55 0.2939
2023-11-01 2023-09-30 13F COSTCO WHOLESALE COM 22160K105 3,842 322 9.15 2,171 14.51 0.4283
2023-08-01 2023-06-30 13F COSTCO WHOLESALE COM 22160K105 3,520 365 11.57 1,895 20.93 0.4016
2023-05-12 2023-03-31 13F COSTCO WHOLESALE COM 22160K105 3,155 563 21.72 1,568 32.46 0.3656
2023-02-10 2022-12-31 13F COSTCO WHOLESALE COM 22160K105 2,592 158 6.49 1,183 2.96 0.3075
2022-11-08 2022-09-30 13F COSTCO WHOLESALE COM 22160K105 2,434 -780 -24.27 1,149 -32.81 0.4861
2022-08-15 2022-06-30 13F COSTCO WHOLESALE COM 22160K105 3,214 64 2.03 1,710 -5.73 0.7513
2022-04-26 2022-03-31 13F COSTCO WHOLESALE COM 22160K105 3,150 0 0.00 1,814 1.45 0.6550
2022-02-10 2021-12-31 13F COSTCO WHOLESALE COM 22160K105 3,150 3,150 1,788 0.5767
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.