Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionMerit Financial Group, LLC
Latest Disclosed Ownership42,027 shares
Latest Disclosed Value $ 41,877,839
Merit Financial Group, LLC reports 19.50% increase in ownership of COST / Costco Wholesale Corporation

On April 15, 2026 - Merit Financial Group, LLC filed a 13F-HR form disclosing ownership of 42,027 shares of Costco Wholesale Corporation (MX:COST) valued at $41,877,839 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 35,169 shares of Costco Wholesale Corporation. This represents a change in shares of 19.50% 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)
2026-04-15 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 42,027 6,858 19.50 41,878 38.08 0.2407
2026-01-26 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 35,169 2,445 7.47 30,328 0.12 0.2432
2025-11-07 2025-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 32,724 516 1.60 30,291 -5.00 0.2782
2025-10-20 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 32,724 516 30,291 0.2782
2025-07-22 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 32,208 10,616 49.17 31,884 56.13 0.3555
2025-04-09 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 21,592 2,750 14.60 20,421 18.29 0.3059
2025-01-15 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 18,842 2,912 18.28 17,264 22.26 0.3102
2024-10-17 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 15,930 -2,992 -15.81 14,122 -12.20 0.3157
2024-08-13 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 18,922 -116 -0.61 16,083 13.56 0.3546
2024-05-06 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 19,038 6,578 52.79 14,162 72.20 0.3374
2024-02-06 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 12,460 -3,341 -21.14 8,225 -7.87 0.2502
2023-11-07 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 15,801 4,260 36.91 8,927 43.68 0.2921
2023-08-01 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 11,541 -977 -7.80 6,213 -0.10 0.2011
2023-04-24 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 12,518 -1,254 -9.11 6,220 -1.07 0.2262
2023-01-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 13,772 3,272 31.16 6,287 26.76 0.2274
2022-10-31 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 10,500 -2,153 -17.02 4,959 -18.22 0.2152
2022-08-08 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 12,653 8,948 241.51 6,064 184.16 0.1876
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 3,705 2,074 127.16 2,134 130.45 0.1287
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 1,631 50 3.16 926 30.42 0.0908
2021-10-27 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 1,581 1 0.06 710 13.60 0.0743
2021-08-16 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 1,580 1 0.06 625 12.21 0.0587
2021-05-18 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 1,579 80 5.34 557 -1.42 0.0583
2021-02-12 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 1,499 268 21.77 565 29.29 0.0546
2020-11-10 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 1,231 197 19.05 437 39.62 0.0399
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 1,034 -40 -3.72 313 2.29 0.0311
2020-05-05 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 1,074 -65 -5.71 306 -8.66 0.0342
2020-01-16 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 1,139 1,139 335 0.0296
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.