Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionCypress Capital Group
Latest Disclosed Ownership8,071 shares
Latest Disclosed Value $ 8,042,188
Cypress Capital Group reports 0.87% decrease in ownership of COST / Costco Wholesale Corporation

On May 15, 2026 - Cypress Capital Group filed a 13F-HR form disclosing ownership of 8,071 shares of Costco Wholesale Corporation (MX:COST) valued at $8,042,188 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 8,142 shares of Costco Wholesale Corporation. This represents a change in shares of -0.87% 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)
2026-05-15 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 8,071 -71 -0.87 8,042 14.54 0.6704
2026-02-11 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 8,142 -27 -0.33 7,021 -7.14 0.7866
2025-11-03 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 8,169 -144 -1.73 7,561 -8.12 0.9041
2025-07-25 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 8,313 196 2.41 8,229 7.20 1.0241
2025-05-12 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 8,117 -198 -2.38 7,677 0.76 1.0054
2025-02-06 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 8,315 -200 -2.35 7,619 0.93 0.9346
2024-11-08 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 8,515 129 1.54 7,549 5.89 0.8483
2024-07-25 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 8,386 -54 -0.64 7,128 15.28 0.8542
2024-05-08 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 8,440 -212 -2.45 6,183 8.26 0.7408
2024-01-24 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 8,652 -82 -0.94 5,711 15.77 0.7429
2023-11-02 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 8,734 -10 -0.11 4,934 4.80 0.7127
2023-07-26 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 8,744 -1,148 -11.61 4,708 -4.23 0.6809
2023-05-04 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 9,892 -1,256 -11.27 4,915 -3.42 0.7544
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 11,148 -44 -0.39 5,089 -3.71 0.7679
2022-11-04 2022-09-30 13F COSTCO WHOLESALE COM 22160K105 11,192 -1,381 -10.98 5,285 -12.31 0.8809
2022-07-26 2022-06-30 13F COSTCO WHOLESALE COM 22160K105 12,573 -41 -0.33 6,027 -17.03 0.9182
2022-05-16 2022-03-31 13F COSTCO WHOLESALE COM 22160K105 12,614 -426 -3.27 7,264 -1.88 0.8946
2022-02-15 2021-12-31 13F COSTCO WHOLESALE COM 22160K105 13,040 -1,094 -7.74 7,403 16.56 0.9270
2021-10-12 2021-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 14,134 -270 -1.87 6,351 11.44 0.8635
2021-07-13 2021-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 14,404 29 0.20 5,699 12.47 0.7722
2021-04-14 2021-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 14,375 -424 -2.87 5,067 -9.14 0.7188
2021-01-12 2020-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 14,799 1,743 13.35 5,577 20.32 0.8399
2020-10-08 2020-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 13,056 -311 -2.33 4,635 14.33 0.7720
2020-07-10 2020-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 13,367 1,658 14.16 4,054 21.41 0.7430
2020-04-08 2020-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 11,709 57 0.49 3,339 -2.48 0.7706
2020-01-10 2019-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 11,652 68 0.59 3,424 2.61 0.6099
2019-10-10 2019-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 11,584 605 5.51 3,337 15.03 0.6428
2019-08-15 2019-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 10,979 3,020 37.94 2,901 50.54 0.5724
2019-05-14 2019-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 7,959 -162 -1.99 1,927 16.51 0.3945
2019-02-19 2018-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 8,121 -4,709 -36.70 1,654 -45.12 0.3790
2018-11-15 2018-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 12,830 6,706 109.50 3,014 135.47 0.5711
2018-08-15 2018-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 6,124 -255 -4.00 1,280 6.49 0.2641
2018-05-21 2018-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 6,379 1,090 20.61 1,202 22.15 0.2522
2018-02-14 2017-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 5,289 1,989 60.27 984 81.55 0.2047
2017-11-16 2017-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 3,300 800 32.00 542 35.50 0.1155
2017-08-15 2017-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 2,500 2,500 400 0.0886
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.