Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionPDS Planning, Inc
Latest Disclosed Ownership3,847 shares
Latest Disclosed Value $ 3,833,177
PDS Planning, Inc reports 1.42% increase in ownership of COST / Costco Wholesale Corporation

On April 21, 2026 - PDS Planning, Inc filed a 13F-HR form disclosing ownership of 3,847 shares of Costco Wholesale Corporation (MX:COST) valued at $3,833,177 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 3,793 shares of Costco Wholesale Corporation. This represents a change in shares of 1.42% 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)
2026-04-21 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 3,847 54 1.42 3,833 17.18 0.2528
2026-01-26 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 3,793 115 3.13 3,271 -3.91 0.2185
2025-10-21 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 3,678 3 0.08 3,404 -6.43 0.2355
2025-07-24 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 3,675 793 27.52 3,639 33.50 0.2712
2025-04-24 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 2,882 238 9.00 2,726 12.51 0.2298
2025-02-10 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 2,644 36 1.38 2,422 4.80 0.2152
2024-10-30 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 2,608 40 1.56 2,312 5.91 0.2072
2024-08-08 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 2,568 528 25.88 2,183 46.05 0.2202
2024-05-01 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 2,040 43 2.15 1,494 13.35 0.1570
2024-02-01 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 1,997 75 3.90 1,318 21.47 0.1502
2023-10-23 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 1,922 64 3.44 1,086 8.50 0.1405
2023-07-21 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 1,858 92 5.21 1,001 14.03 0.1279
2023-05-02 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 1,766 943 114.58 877 133.87 0.1210
2023-01-27 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 823 51 6.61 376 2.74 0.0600
2022-11-02 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 772 -325 -29.63 365 -30.61 0.0664
2022-07-15 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 1,097 -16 -1.44 526 -17.94 0.0952
2022-04-18 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 1,113 70 6.71 641 8.28 0.1128
2022-01-25 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 1,043 49 4.93 592 32.74 0.1133
2021-10-22 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 994 87 9.59 446 24.23 0.1029
2021-07-26 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 907 165 22.24 359 37.02 0.0874
2021-04-20 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 742 -4 -0.54 262 -6.76 0.0761
2021-01-21 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 746 64 9.38 281 16.12 0.0965
2020-10-19 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 682 -83 -10.85 242 4.31 0.0986
2020-08-11 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 765 765 232 0.1051
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.