Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionToth Financial Advisory Corp
Latest Disclosed Ownership2,547 shares
Latest Disclosed Value $ 2,538,217
Toth Financial Advisory Corp reports 19.13% increase in ownership of COST / Costco Wholesale Corporation

On April 16, 2026 - Toth Financial Advisory Corp filed a 13F-HR form disclosing ownership of 2,547 shares of Costco Wholesale Corporation (MX:COST) valued at $2,538,217 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 2,138 shares of Costco Wholesale Corporation. This represents a change in shares of 19.13% 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)
2026-04-16 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 2,547 409 19.13 2,538 37.71 0.2786
2026-01-20 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 2,138 288 15.57 1,844 7.65 0.2002
2025-10-09 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 1,850 44 2.44 1,713 -4.20 0.1846
2025-07-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 1,806 92 5.37 1,788 10.24 0.2086
2025-04-14 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 1,714 -98 -5.41 1,621 -2.35 0.1951
2025-01-21 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 1,812 -30 -1.63 1,660 1.72 0.1953
2024-10-21 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 1,842 -54 -2.85 1,633 1.30 0.1928
2024-07-16 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 1,896 -262 -12.14 1,612 1.96 0.2048
2024-04-16 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 2,158 -12 -0.55 1,581 10.34 0.1979
2024-01-26 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 2,170 267 14.03 1,432 33.21 0.1942
2023-10-12 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 1,903 109 6.08 1,075 11.40 0.1638
2023-07-24 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 1,794 160 9.79 966 18.99 0.1397
2023-04-24 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 1,634 153 10.33 812 19.97 0.1266
2023-01-24 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 1,481 172 13.14 676 9.39 0.1097
2022-10-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 1,309 178 15.74 618 14.02 0.1119
2022-07-25 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 1,131 133 13.33 542 -5.74 0.0944
2022-04-26 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 998 10 1.01 575 2.50 0.0859
2022-01-31 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 988 -16 -1.59 561 24.39 0.0765
2021-10-20 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 1,004 41 4.26 451 18.37 0.0685
2021-07-26 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 963 75 8.45 381 21.73 0.0582
2021-04-20 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 888 1 0.11 313 -6.29 0.0499
2021-01-25 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 887 0 0.00 334 6.03 0.0572
2020-10-16 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 887 5 0.57 315 17.54 0.0605
2020-07-14 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 882 150 20.49 268 28.23 0.0580
2020-04-20 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 732 0 0.00 209 -2.79 0.0604
2020-01-27 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 732 20 2.81 215 4.88 0.0436
2019-10-15 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 712 0 0.00 205 9.04 0.0449
2019-07-17 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 712 -5 -0.70 188 8.05 0.0421
2019-04-15 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 717 65 9.97 174 30.83 0.0407
2019-01-22 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 652 1 0.15 133 -13.07 0.0364
2018-10-15 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 651 0 0.00 153 12.50 0.0340
2018-07-23 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 651 0 0.00 136 10.57 0.0319
2018-04-25 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 651 0 0.00 123 1.65 0.0299
2018-02-06 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 651 651 121 0.0287
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.