Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionConcord Wealth Partners
Latest Disclosed Ownership3,192 shares
Latest Disclosed Value $ 3,181,055
Concord Wealth Partners reports 3.71% decrease in ownership of COST / Costco Wholesale Corporation

On May 1, 2026 - Concord Wealth Partners filed a 13F-HR form disclosing ownership of 3,192 shares of Costco Wholesale Corporation (MX:COST) valued at $3,181,055 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 3,315 shares of Costco Wholesale Corporation. This represents a change in shares of -3.71% 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)
2026-05-01 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 3,192 -123 -3.71 3,181 11.30 0.4129
2026-01-29 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 3,315 251 8.19 2,858 0.81 0.3713
2025-11-05 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 3,064 275 9.86 2,836 2.72 0.3914
2025-07-25 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 2,789 -16 -0.57 2,761 4.07 0.4025
2025-05-02 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 2,805 -1,510 -34.99 2,653 -32.91 0.4356
2025-01-24 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 4,315 137 3.28 3,953 6.75 0.6475
2024-10-24 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 4,178 479 12.95 3,704 17.82 0.6179
2024-07-31 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 3,699 334 9.93 3,144 27.51 0.5543
2024-04-30 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 3,365 561 20.01 2,465 33.24 0.4436
2024-04-30 2023-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 2,804 859 44.16 1,851 68.49 0.3706
2024-02-06 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 2,804 859 1,851 0.3706
2024-04-30 2023-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 1,945 1,109 132.66 1,099 144.00 0.2335
2023-10-25 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 1,945 1,109 1,099 0.2335
2023-08-08 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 836 300 55.97 450 69.17 0.0969
2023-04-26 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 536 -61 -10.22 266 -2.21 0.0756
2023-01-30 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 597 29 5.11 272 1.49 0.0819
2022-11-10 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 568 -69 -10.83 268 -12.13 0.0850
2022-08-04 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 637 188 41.87 305 18.22 0.0837
2022-04-20 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 449 43 10.59 258 12.17 0.0668
2022-01-21 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 406 169 71.31 230 116.98 0.0563
2021-11-09 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 237 -134 -36.12 106 -27.89 0.0434
2021-07-29 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 371 1 0.27 147 13.08 0.0421
2021-05-13 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 370 106 40.15 130 31.31 0.0438
2021-02-16 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 264 264 99 0.0763
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.