Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionS.E.E.D. Planning Group LLC
Latest Disclosed Ownership12,308 shares
Latest Disclosed Value $ 12,264,324
S.E.E.D. Planning Group LLC reports 71.68% increase in ownership of COST / Costco Wholesale Corporation

On April 23, 2026 - S.E.E.D. Planning Group LLC filed a 13F-HR form disclosing ownership of 12,308 shares of Costco Wholesale Corporation (MX:COST) valued at $12,264,324 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 7,169 shares of Costco Wholesale Corporation. This represents a change in shares of 71.68% 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)
2026-04-23 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 12,308 5,139 71.68 12,264 98.38 3.5616
2026-01-09 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 7,169 -60 -0.83 6,182 -7.61 1.7620
2025-10-14 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 7,229 -212 -2.85 6,692 -9.16 1.9502
2025-07-08 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 7,441 -790 -9.60 7,367 -5.38 2.3094
2025-04-08 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 8,231 -510 -5.83 7,785 -2.80 2.6236
2025-01-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 8,741 -524 -5.66 8,009 -2.48 2.6733
2024-10-15 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 9,265 -1,043 -10.12 8,214 -6.25 2.7235
2024-07-18 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 10,308 -403 -3.76 8,761 11.65 3.1853
2024-04-16 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 10,711 -1,191 -10.01 7,847 -0.11 2.8652
2024-01-26 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 11,902 -1,490 -11.13 7,856 3.85 3.1662
2023-10-17 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 13,392 -1,569 -10.49 7,566 -6.07 2.9177
2023-07-18 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 14,961 872 6.19 8,055 15.06 2.8267
2023-04-13 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 14,089 1,256 9.79 7,000 19.49 2.7016
2023-01-19 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 12,833 868 7.25 5,858 3.66 2.5389
2022-10-20 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 11,965 -702 -5.54 5,651 -6.92 2.6425
2022-07-26 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 12,667 3,381 36.41 6,071 13.54 2.7493
2022-04-26 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 9,286 1,761 23.40 5,347 25.16 2.2801
2022-01-24 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 7,525 -1,453 -16.18 4,272 5.90 1.8539
2021-10-21 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 8,978 -1,808 -16.76 4,034 -5.48 1.9030
2021-07-14 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 10,786 -162 -1.48 4,268 10.60 2.1010
2021-04-21 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 10,948 2,070 23.32 3,859 15.37 2.1173
2021-01-19 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 8,878 7,626 609.11 3,345 653.38 2.0082
2020-10-16 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 1,252 -111 -8.14 444 7.51 0.3255
2020-07-17 2020-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 1,363 -45 -3.20 413 2.99 0.3228
2020-07-06 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 1,363 -45 417 322,737.9322
2020-04-17 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 1,408 -263 -15.74 401 -18.33 0.3894
2020-02-10 2019-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 1,671 1,671 491 0.4268
2020-01-22 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 1,671 491
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.