Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionFocus Financial Network, Inc.
Latest Disclosed Ownership10,263 shares
Latest Disclosed Value $ 10,226,514
Focus Financial Network, Inc. reports 5.27% decrease in ownership of COST / Costco Wholesale Corporation

On April 14, 2026 - Focus Financial Network, Inc. filed a 13F-HR form disclosing ownership of 10,263 shares of Costco Wholesale Corporation (MX:COST) valued at $10,226,514 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 12, 2026 disclosing 10,834 shares of Costco Wholesale Corporation. This represents a change in shares of -5.27% 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)
2026-04-14 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 10,263 -571 -5.27 10,227 9.46 0.3666
2026-01-12 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 10,834 -486 -4.29 9,343 -10.84 0.3253
2025-10-10 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 11,320 358 3.27 10,478 -3.45 0.3736
2025-07-10 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 10,962 -491 -4.29 10,852 0.19 0.4285
2025-04-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 11,453 74 0.65 10,832 3.89 0.4429
2025-01-29 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 11,379 701 6.56 10,426 10.13 0.4144
2024-10-28 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 10,678 55 0.52 9,466 5.29 0.3866
2024-07-22 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 10,623 41 0.39 8,990 19.45 0.3840
2024-04-24 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 10,582 1,000 10.44 7,526 39.04 0.3668
2024-07-23 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 9,582 -49 -0.51 5,413 4.40 0.3056
2024-07-23 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 9,631 321 3.45 5,185 12.08 0.2880
2024-07-23 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 9,310 119 1.29 4,626 10.27 0.2880
2024-07-24 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 9,191 445 5.09 4,196 1.57 0.3413
2024-07-24 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 8,746 -92 -1.04 4,130 -2.48 0.3567
2024-07-24 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 8,838 703 8.64 4,236 -9.59 0.3499
2024-07-24 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 8,135 -1,037 -11.31 4,684 -10.03 0.3265
2024-07-24 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 9,172 926 11.23 5,207 40.51 0.7622
2024-07-24 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 8,246 -385 -4.46 3,705 8.49 0.4946
2024-07-24 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 8,631 27 0.31 3,415 12.63 0.4543
2024-07-24 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 8,604 2,183 34.00 3,033 25.34 0.3548
2024-07-24 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 6,421 -97 -1.49 2,419 4.58 0.2144
2024-07-24 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 6,518 671 11.48 2,314 30.53 0.2159
2024-07-24 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 5,847 756 14.85 1,773 22.12 0.1970
2024-07-24 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 5,091 1,114 28.01 1,452 24.23 0.1949
2024-07-24 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 3,977 318 8.69 1,169 10.82 0.1432
2024-07-24 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 3,659 32 0.88 1,054 10.02 0.1461
2024-07-24 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 3,627 -28 -0.77 958 8.25 0.1419
2024-07-24 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 3,655 3,655 885 0.1419
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.