Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionEdgeRock Capital LLC
Latest Disclosed Ownership791 shares
Latest Disclosed Value $ 788,744
EdgeRock Capital LLC reports 10.17% increase in ownership of COST / Costco Wholesale Corporation

On April 16, 2026 - EdgeRock Capital LLC filed a 13F-HR form disclosing ownership of 791 shares of Costco Wholesale Corporation (MX:COST) valued at $788,744 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 718 shares of Costco Wholesale Corporation. This represents a change in shares of 10.17% 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)
2026-04-16 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 791 73 10.17 789 27.30 0.2134
2026-01-14 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 718 -237 -24.82 620 -29.90 0.1649
2025-10-28 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 955 -32 -3.24 884 -9.44 0.2460
2025-07-16 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 987 281 39.80 976 45.96 0.3087
2025-04-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 706 -20 -2.75 668 0.45 0.4763
2025-02-04 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 726 8 1.11 666 4.56 0.4362
2024-10-15 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 718 23 3.31 637 7.61 0.4478
2024-07-24 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 695 74 11.92 591 30.18 0.4575
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 621 28 4.72 454 7.84 0.3618
2024-02-06 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 593 147 32.96 422 67.73 0.3074
2023-11-14 2023-09-30 13F Costco Wholesale COM 22160K105 446 446 252 0.1532
2023-07-11 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 0 -473 -100.00 0 0.0000
2023-04-13 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 473 473 0 0.1206
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -352 -100.00 0 -100.00
2022-10-14 2022-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 352 352 166 0.0945
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.