Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionEquitable Trust Co
Latest Disclosed Ownership4,043 shares
Latest Disclosed Value $ 4,028,566
Equitable Trust Co reports 0.45% increase in ownership of COST / Costco Wholesale Corporation

On April 30, 2026 - Equitable Trust Co filed a 13F-HR form disclosing ownership of 4,043 shares of Costco Wholesale Corporation (MX:COST) valued at $4,028,566 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 4,025 shares of Costco Wholesale Corporation. This represents a change in shares of 0.45% 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)
2026-04-30 2026-03-31 13F Costco Wholesale Com 22160K105 4,043 18 0.45 4,029 16.08 0.1096
2026-02-02 2025-12-31 13F Costco Wholesale Com 22160K105 4,025 31 0.78 3,471 -6.11 0.1550
2025-11-10 2025-09-30 13F Costco Wholesale Com 22160K105 3,994 -49 -1.21 3,697 -7.65 0.1699
2025-07-23 2025-06-30 13F Costco Wholesale Com 22160K105 4,043 -96 -2.32 4,002 2.25 0.1994
2025-04-25 2025-03-31 13F Costco Wholesale Com 22160K105 4,139 -98 -2.31 3,915 0.82 0.2168
2025-01-28 2024-12-31 13F Costco Wholesale Com 22160K105 4,237 0 0.00 3,882 3.35 0.2167
2024-10-29 2024-09-30 13F Costco Wholesale Com 22160K105 4,237 -9 -0.21 3,756 4.07 0.2410
2024-07-31 2024-06-30 13F Costco Wholesale Com 22160K105 4,246 646 17.94 3,609 36.86 0.2482
2024-04-24 2024-03-31 13F Costco Wholesale Com 22160K105 3,600 2,379 194.84 2,637 227.58 0.1829
2024-01-25 2023-12-31 13F Costco Wholesale Com 22160K105 1,221 0 0.00 806 16.84 0.0606
2023-11-06 2023-09-30 13F Costco Wholesale Com 22160K105 1,221 191 18.54 690 24.37 0.0570
2023-08-08 2023-06-30 13F Costco Wholesale Com 22160K105 1,030 161 18.53 555 28.54 0.0424
2023-05-02 2023-03-31 13F Costco Wholesale Com 22160K105 869 -775 -47.14 432 -42.53 0.0340
2023-02-17 2022-12-31 13F Costco Wholesale Com 22160K105 1,644 67 4.25 750 0.67 0.0591
2022-10-31 2022-09-30 13F Costco Wholesale Com 22160K105 1,577 1,086 221.18 745 217.02 0.0621
2022-07-15 2022-06-30 13F Costco Wholesale Com 22160K105 491 20 4.25 235 -13.28 0.0175
2022-05-06 2022-03-31 13F Costco Wholesale Com 22160K105 471 -27 -5.42 271 -4.24 0.0174
2022-01-31 2021-12-31 13F Costco Wholesale Com 22160K105 498 498 283 0.0175
2021-05-14 2021-03-31 13F Costco Wholesale Com 22160K105 0 -969 -100.00 0 -100.00
2021-02-12 2020-12-31 13F Costco Wholesale Com 22160K105 969 261 36.86 365 44.84 0.0271
2020-11-13 2020-09-30 13F Costco Wholesale Com 22160K105 708 0 0.00 252 17.76 0.0215
2020-08-18 2020-06-30 13F Costco Wholesale Com 22160K105 708 708 214 0.0197
2020-02-18 2019-12-31 13F Costco Wholesale Com 22160K105 0 -819 -100.00 0 -100.00
2019-11-19 2019-09-30 13F Costco Wholesale Com 22160K105 819 57 7.48 236 17.41 0.0249
2019-08-16 2019-06-30 13F Costco Wholesale Com 22160K105 762 -178 -18.94 201 -11.84 0.0213
2019-05-15 2019-03-31 13F Costco Wholesale Com 22160K105 940 940 228 0.0263
2019-02-22 2018-12-31 13F Costco Wholesale Com 22160K105 0 -902 -100.00 0 -100.00
2018-11-15 2018-09-30 13F Costco Wholesale Com 22160K105 902 902 212 0.0247
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.