Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionJB Capital LLC
Latest Disclosed Ownership807 shares
Latest Disclosed Value $ 803,742
JB Capital LLC reports 11.90% decrease in ownership of COST / Costco Wholesale Corporation

On April 27, 2026 - JB Capital LLC filed a 13F-HR form disclosing ownership of 807 shares of Costco Wholesale Corporation (MX:COST) valued at $803,742 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 916 shares of Costco Wholesale Corporation. This represents a change in shares of -11.90% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-27 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 807 -109 -11.90 804 1.65 0.0325
2026-01-20 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 916 74 8.79 790 1.41 0.0323
2025-10-20 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 842 31 3.82 779 -2.87 0.0336
2025-07-24 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 811 -3 -0.37 803 4.16 0.0389
2025-04-23 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 814 -10 -1.21 771 1.85 0.0425
2025-01-24 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 824 -25 -2.94 757 0.40 0.0423
2024-10-31 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 849 21 2.54 754 7.11 0.0433
2024-07-24 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 828 50 6.43 704 23.33 0.0441
2024-04-30 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 778 32 4.29 570 15.85 0.0380
2024-01-22 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 746 44 6.27 493 23.93 0.0364
2023-10-25 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 702 -46 -6.15 397 -1.49 0.0335
2023-07-25 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 748 100 15.43 403 25.16 0.0340
2023-04-25 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 648 45 7.46 322 17.09 0.0294
2023-01-23 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 603 3 0.50 275 -3.17 0.0269
2022-10-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 600 -362 -37.63 284 -38.39 0.0312
2022-07-28 2022-06-30 13F Costco Wholesale CL A 22160K105 962 105 12.25 461 -6.49 0.0494
2022-04-19 2022-03-31 13F ConocoPhillips COM 22160K105 857 -81 -8.64 493 -99.91 0.0480
2022-02-02 2021-12-31 13F Costco Wholesale COM 22160K105 938 32 3.53 532,683 130,780.34 0.0521
2021-12-08 2021-09-30 13F Costco Wholesale COMMON STOCK 22160K105 906 906 407 0.0527
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.