Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionInlet Private Wealth, LLC
Latest Disclosed Ownership5,080 shares
Latest Disclosed Value $ 5,061,777
Inlet Private Wealth, LLC reports 3.79% decrease in ownership of COST / Costco Wholesale Corporation

On May 13, 2026 - Inlet Private Wealth, LLC filed a 13F-HR form disclosing ownership of 5,080 shares of Costco Wholesale Corporation (MX:COST) valued at $5,061,777 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 5,280 shares of Costco Wholesale Corporation. This represents a change in shares of -3.79% 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)
2026-05-13 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 5,080 -200 -3.79 5,062 11.16 1.2927
2026-01-21 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 5,280 -25 -0.47 4,553 -7.27 1.0561
2025-10-31 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 5,305 10 0.19 4,910 -6.32 1.1082
2025-08-05 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 5,295 0 0.00 5,242 4.67 1.2882
2025-05-07 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 5,295 -75 -1.40 5,008 1.77 1.3018
2025-01-24 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 5,370 0 0.00 4,920 3.36 1.3013
2024-10-16 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 5,370 0 0.00 4,761 4.29 1.2078
2024-07-23 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 5,370 -115 -2.10 4,565 13.59 1.2490
2024-04-25 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 5,485 -50 -0.90 4,018 9.99 1.1224
2024-01-26 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 5,535 0 0.00 3,654 16.82 1.1198
2023-10-30 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 5,535 0 0.00 3,127 4.97 1.0283
2023-07-27 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 5,535 18 0.33 2,980 8.68 0.7519
2023-05-03 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 5,517 -100 -1.78 2,741 6.90 0.7129
2023-01-23 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 5,617 -80 -1.40 2,564 -4.72 0.6587
2022-10-20 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 5,697 -150 -2.57 2,691 -3.96 0.8019
2022-07-13 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 5,847 0 0.00 2,802 -16.78 0.8001
2022-04-29 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 5,847 100 1.74 3,367 3.19 0.8413
2022-01-31 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 5,747 0 0.00 3,263 26.37 0.7913
2021-11-12 2021-09-30 13F/A-3 COSTCO WHSL CORP COM 22160K105 5,747 -133 -2.26 2,582 10.96 0.6922
2021-10-22 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 5,880 0 2,327 0.6182
2021-08-04 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 5,880 0 0.00 2,327 12.25 0.6102
2021-05-05 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 5,880 0 0.00 2,073 -6.41 0.5933
2021-02-11 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 5,880 0 0.00 2,215 6.13 0.7244
2020-10-16 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 5,880 0 0.00 2,087 17.05 0.8134
2020-08-10 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 5,880 0 0.00 1,783 6.32 0.7118
2020-04-28 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 5,880 0 0.00 1,677 -2.95 0.7776
2020-01-17 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 5,880 0 0.00 1,728 2.01 0.5721
2019-10-17 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 5,880 350 6.33 1,694 9.64 0.6272
2019-07-22 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 5,530 1,142 26.03 1,545 45.34 0.5554
2019-04-26 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 4,388 12 0.27 1,063 19.30 0.4272
2019-01-26 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 4,376 4,376 891 0.4794
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.