Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionWedbush Securities Inc
Latest Disclosed Ownership116,389 shares
Latest Disclosed Value $ 115,974
Wedbush Securities Inc reports 1.51% increase in ownership of COST / Costco Wholesale Corporation

On April 21, 2026 - Wedbush Securities Inc filed a 13F-HR form disclosing ownership of 116,389 shares of Costco Wholesale Corporation (MX:COST) valued at $115,974 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 114,653 shares of Costco Wholesale Corporation. This represents a change in shares of 1.51% 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 116,389 1,736 1.51 116 17.35 3.3819
2026-02-12 2025-12-31 13F COSTCO WHOLESALE COM 22160K105 114,653 2,022 1.80 99 -5.77 2.8846
2025-11-06 2025-09-30 13F COSTCO WHOLESALE COM 22160K105 112,631 -2,579 -2.24 104 -8.77 3.4055
2025-08-06 2025-06-30 13F COSTCO WHOLESALE COM 22160K105 115,210 -4,762 -3.97 114 0.88 3.9865
2025-05-06 2025-03-31 13F COSTCO WHOLESALE COM 22160K105 119,972 537 0.45 113 3.67 4.1646
2025-02-13 2024-12-31 13F COSTCO WHOLESALE COM 22160K105 119,435 1,937 1.65 109 4.81 3.9009
2024-11-08 2024-09-30 13F COSTCO WHOLESALE COM 22160K105 117,498 -2,360 -1.97 104 2.97 3.8641
2024-08-07 2024-06-30 13F COSTCO WHOLESALE COM 22160K105 119,858 46 0.04 102 16.09 3.6420
2024-05-15 2024-03-31 13F COSTCO WHOLESALE COM 22160K105 119,812 75,947 173.14 88 210.71 3.2745
2024-02-12 2023-12-31 13F COSTCO WHOLESALE COM 22160K105 43,865 -1,035 -2.31 29 12.00 1.2824
2023-11-14 2023-09-30 13F COSTCO WHOLESALE COM 22160K105 44,900 1,362 3.13 25 8.70 1.2615
2023-08-14 2023-06-30 13F COSTCO WHOLESALE COM 22160K105 43,538 -2,201 -4.81 23 4.55 1.1182
2023-05-09 2023-03-31 13F COSTCO WHOLESALE COM 22160K105 45,739 -779 -1.67 23 4.76 1.1373
2023-01-31 2022-12-31 13F COSTCO WHOLESALE COM 22160K105 46,518 -1,433 -2.99 21 -99.91 1.1672
2022-10-18 2022-09-30 13F COSTCO WHOLESALE COM 22160K105 47,951 3,179 7.10 22,646 5.54 1.2718
2022-07-21 2022-06-30 13F COSTCO WHOLESALE COM 22160K105 44,772 1,781 4.14 21,458 -13.33 1.1684
2022-04-19 2022-03-31 13F COSTCO WHOLESALE COM 22160K105 42,991 801 1.90 24,757 3.37 1.1329
2022-01-13 2021-12-31 13F COSTCO WHOLESALE COM 22160K105 42,190 2,464 6.20 23,951 34.17 1.0319
2021-10-08 2021-09-30 13F COSTCO WHOLESALE COM 22160K105 39,726 62 0.16 17,851 13.74 0.8472
2021-07-27 2021-06-30 13F COSTCO WHOLESALE COM 22160K105 39,664 11,029 38.52 15,694 55.49 0.7418
2021-04-26 2021-03-31 13F COSTCO WHOLESALE COM 22160K105 28,635 8,752 44.02 10,093 34.72 0.5589
2021-02-16 2020-12-31 13F COSTCO WHOLESALE COM 22160K105 19,883 293 1.50 7,492 7.74 0.6569
2020-10-20 2020-09-30 13F COSTCO WHOLESALE COM 22160K105 19,590 -612 -3.03 6,954 13.53 0.6668
2020-07-16 2020-06-30 13F COSTCO WHOLESALE COM 22160K105 20,202 1,211 6.38 6,125 13.11 0.5791
2020-04-17 2020-03-31 13F COSTCO WHOLESALE COM 22160K105 18,991 172 0.91 5,415 -2.10 0.6444
2020-01-16 2019-12-31 13F COSTCO WHOLESALE COM 22160K105 18,819 1,428 8.21 5,531 10.38 0.4916
2019-10-17 2019-09-30 13F COSTCO WHOLESALE COM 22160K105 17,391 -449 -2.52 5,011 6.30 0.4902
2019-08-01 2019-06-30 13F COSTCO WHOLESALE COM 22160K105 17,840 3,998 28.88 4,714 40.63 0.4739
2019-04-17 2019-03-31 13F COSTCO WHOLESALE COM 22160K105 13,842 262 1.93 3,352 21.19 0.3601
2019-01-31 2018-12-31 13F COSTCO WHOLESALE COM 22160K105 13,580 609 4.70 2,766 -9.22 0.3535
2018-11-13 2018-09-30 13F COSTCO WHOLESALE COM 22160K105 12,971 294 2.32 3,047 15.02 0.3457
2018-08-03 2018-06-30 13F COSTCO WHOLESALE COM 22160K105 12,677 -259 -2.00 2,649 8.65 0.3284
2018-05-01 2018-03-31 13F COSTCO WHOLESALE COM 22160K105 12,936 -4,954 -27.69 2,438 -26.79 0.3184
2018-02-09 2017-12-31 13F COSTCO WHOLESALE COM 22160K105 17,890 -451 -2.46 3,330 10.52 0.4067
2017-10-31 2017-09-30 13F COSTCO WHOLESALE COM 22160K105 18,341 2,680 17.11 3,013 20.28 0.3913
2017-08-02 2017-06-30 13F COSTCO WHOLESALE COM 22160K105 15,661 3,393 27.66 2,505 21.78 0.3250
2017-05-05 2017-03-31 13F COSTCO WHOLESALE COM 22160K105 12,268 718 6.22 2,057 11.25 0.2787
2017-01-25 2016-12-31 13F COSTCO WHOLESALE COM 22160K105 11,550 75 0.65 1,849 5.66 0.2723
2016-11-04 2016-09-30 13F COSTCO WHOLESALE COM 22160K105 11,475 874 8.24 1,750 5.11 0.2606
2016-08-02 2016-06-30 13F COSTCO WHOLESALE COM 22160K105 10,601 428 4.21 1,665 3.87 0.2725
2016-05-02 2016-03-31 13F COSTCO WHOLESALE COM 22160K105 10,173 246 2.48 1,603 0.00 0.2786
2016-02-03 2015-12-31 13F COSTCO WHOLESALE COM 22160K105 9,927 2,711 37.57 1,603 53.69 0.2897
2015-10-28 2015-09-30 13F COSTCO WHOLESALE COM 22160K105 7,216 -216 -2.91 1,043 3.88 0.2094
2015-08-10 2015-06-30 13F COSTCO WHOLESALE COM 22160K105 7,432 819 12.38 1,004 0.20 0.1853
2015-05-12 2015-03-31 13F COSTCO WHOLESALE COM 22160K105 6,613 6,613 0.00 1,002 0.1702
2015-01-27 2014-12-31 13F COSTCO WHOLESALE COM 22160K105 0 -8,783 -100.00 0 -100.00
2014-11-07 2014-09-30 13F COSTCO WHOLESALE COM 22160K105 8,783 -244 -2.70 1,101 5.87 0.1714
2014-08-04 2014-06-30 13F COSTCO WHOLESALE COM 22160K105 9,027 107 1.20 1,040 4.42 0.1659
2014-05-09 2014-03-31 13F COSTCO WHOLESALE COM 22160K105 8,920 2,091 30.62 996 22.51 0.1746
2014-02-03 2013-12-31 13F COSTCO WHOLESALE COM 22160K105 6,829 478 7.53 813 11.22 0.1920
2013-10-28 2013-09-30 13F COSTCO WHOLESALE COM 22160K105 6,351 126 2.02 731 6.25 0.1931
2013-08-12 2013-06-30 13F COSTCO WHOLESALE COM 22160K105 6,225 6,225 688 0.1888
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.