Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionStephens Consulting, LLC
Latest Disclosed Ownership309 shares
Latest Disclosed Value $ 266,298
Stephens Consulting, LLC reports 4.39% increase in ownership of COST / Costco Wholesale Corporation

On January 13, 2026 - Stephens Consulting, LLC filed a 13F-HR form disclosing ownership of 309 shares of Costco Wholesale Corporation (MX:COST) valued at $266,298 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 15, 2025 disclosing 296 shares of Costco Wholesale Corporation. This represents a change in shares of 4.39% 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)
2026-01-13 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 309 13 4.39 266 -2.92 0.0861
2025-10-15 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 296 -6 -1.99 274 -8.05 0.0939
2025-07-25 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 302 7 2.37 299 6.81 0.0709
2025-04-17 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 295 60 25.53 279 29.77 0.0699
2025-01-27 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 215 3.37 0.0539
2024-10-18 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 208 4.52 0.0531
2024-07-29 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 200 15.70 0.0568
2024-04-17 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 172 10.97 0.0528
2024-02-01 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 155 17.42 0.0525
2023-10-25 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 133 4.76 0.0539
2023-07-21 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 127 8.62 0.0501
2023-04-19 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 235 0 0.00 117 8.41 0.0704
2023-01-20 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 235 154 190.12 107 181.58 0.0712
2023-01-20 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 81 0 0.00 38 0.00 0.0344
2023-01-20 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 81 0 0.00 39 -17.39 0.0316
2023-01-20 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 81 12 17.39 47 17.95 0.0381
2023-01-20 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 69 69 39 0.0324
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.