Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionCapco Asset Management, LLC
Latest Disclosed Ownership380 shares
Latest Disclosed Value $ 378,643
Capco Asset Management, LLC ownership in COST / Costco Wholesale Corporation

On May 8, 2026 - Capco Asset Management, LLC filed a 13F-HR form disclosing ownership of 380 shares of Costco Wholesale Corporation (MX:COST) valued at $378,643 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 380 shares of Costco Wholesale Corporation. This represents a change in shares of 0.00% 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)
2026-05-08 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 380 0 0.00 379 15.60 0.1033
2026-02-06 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 328 -6.84 0.0801
2025-11-12 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 352 -6.65 0.0820
2025-08-08 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 376 4.74 0.0791
2025-05-12 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 359 3.16 0.0850
2025-02-11 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 348 3.57 0.0783
2024-11-12 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 337 4.35 0.0779
2024-08-12 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 323 15.83 0.0764
2024-05-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 278 11.20 0.0668
2024-02-07 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 251 16.82 0.0602
2023-11-03 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 215 4.90 0.0557
2023-08-10 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 205 8.51 0.0527
2023-05-10 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 189 8.67 0.0494
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 173 -3.35 0.0490
2022-11-07 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 380 -85 -18.28 179 -19.73 0.0600
2022-08-08 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 465 -102 -17.99 223 -31.80 0.0673
2022-05-06 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 567 0 0.00 327 1.55 0.0843
2022-02-07 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 567 0 0.00 322 26.27 0.0888
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 567 187 49.21 255 70.00 0.0747
2021-08-09 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 150 11.94 0.0439
2021-05-07 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 134 -6.29 0.0453
2021-02-04 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 143 5.93 0.0493
2020-11-05 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 135 17.39 0.0536
2020-08-06 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 380 0 0.00 115 6.48 0.0493
2020-05-05 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 380 -20,489 -98.18 108 -98.24 0.0512
2020-02-13 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 20,869 -9 -0.04 6,134 1.98 2.7769
2019-11-06 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 20,878 0 0.00 6,015 9.03 2.9952
2019-08-08 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 20,878 -232 -1.10 5,517 7.92 3.0481
2019-05-03 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 21,110 0 0.00 5,112 18.88 2.9493
2019-02-06 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 21,110 0 0.00 4,300 -13.27 2.8267
2018-11-06 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 21,110 -10,240 -32.66 4,958 -24.33 3.1794
2018-08-06 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 31,350 55 0.18 6,552 11.11 4.6467
2018-05-03 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 31,295 0 0.00 5,897 1.24 4.3127
2018-02-06 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 31,295 -827 -2.57 5,825 10.38 4.3672
2017-11-03 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 32,122 -186 -0.58 5,277 2.13 4.3768
2017-08-03 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 32,308 -45 -0.14 5,167 -4.76 4.5254
2017-04-20 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 32,353 -35 -0.11 5,425 4.61 4.5360
2017-02-14 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 32,388 32,388 5,186 4.7200
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.