Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionGarner Asset Management Corp
Latest Disclosed Ownership3,651 shares
Latest Disclosed Value $ 3,638,326
Garner Asset Management Corp reports 4.97% decrease in ownership of COST / Costco Wholesale Corporation

On April 29, 2026 - Garner Asset Management Corp filed a 13F-HR form disclosing ownership of 3,651 shares of Costco Wholesale Corporation (MX:COST) valued at $3,638,326 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 3,842 shares of Costco Wholesale Corporation. This represents a change in shares of -4.97% 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)
2026-04-29 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 3,651 -191 -4.97 3,638 9.81 1.4269
2026-02-03 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 3,842 159 4.32 3,313 -2.82 1.2712
2025-11-10 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 3,683 -67 -1.79 3,409 -8.16 1.3737
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 3,750 -299 -7.38 3,712 -3.06 1.7163
2025-05-06 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 4,049 -543 -11.82 3,830 95,625.00 1.6809
2025-02-13 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 4,592 -161 -3.39 4 0.00 1.9004
2024-11-12 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 4,753 -45 -0.94 4 0.00 1.8715
2024-08-12 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 4,798 -8 -0.17 4 33.33 1.9280
2024-05-16 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 4,806 623 14.89 4 -99.90 1.7350
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 4,183 -822 -16.42 3,035 151,650.00 1.4748
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 5,005 -121 -2.36 3 0.00 1.6187
2023-08-15 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 5,126 -1,082 -17.43 3 -33.33 1.5383
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 6,208 136 2.24 3 50.00 1.4138
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 6,072 -14 -0.23 3 -99.93 1.3298
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 6,086 -792 -11.51 2,875 -12.80 1.4891
2022-07-29 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 6,878 943 15.89 3,297 -3.54 1.4044
2022-04-29 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 5,935 101 1.73 3,418 3.20 1.3400
2022-01-31 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 5,834 31 0.53 3,312 26.99 1.3476
2021-10-29 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 5,803 50 0.87 2,608 14.59 1.1787
2021-08-03 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 5,753 22 0.38 2,276 12.67 1.0604
2021-04-30 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 5,731 -6 -0.10 2,020 -6.57 1.0231
2021-01-29 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 5,737 239 4.35 2,162 10.76 1.1838
2020-10-30 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 5,498 1 0.02 1,952 17.10 1.2755
2020-07-27 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 5,497 -35 -0.63 1,667 5.64 1.2429
2020-04-27 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 5,532 -154 -2.71 1,578 -5.57 1.4205
2020-01-17 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 5,686 0 0.00 1,671 2.01 1.1575
2019-10-29 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 5,686 -172 -2.94 1,638 5.81 1.2198
2019-07-19 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 5,858 100 1.74 1,548 11.05 1.1965
2019-04-23 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 5,758 -299 -4.94 1,394 12.97 1.1155
2019-01-29 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 6,057 0 0.00 1,234 -13.28 1.0999
2018-10-29 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 6,057 -604 -9.07 1,423 2.23 1.0825
2018-07-19 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 6,661 -49 -0.73 1,392 10.04 1.0934
2018-04-27 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 6,710 -218 -3.15 1,265 -1.94 1.0597
2018-01-30 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 6,928 -150 -2.12 1,290 10.92 1.0889
2017-10-27 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 7,078 50 0.71 1,163 3.47 1.0374
2017-08-14 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 7,028 7,028 1,124 1.0570
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.