Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionOakworth Capital, Inc.
Latest Disclosed Ownership2,455 shares
Latest Disclosed Value $ 2,446,237
Oakworth Capital, Inc. reports 17.75% increase in ownership of COST / Costco Wholesale Corporation

On April 24, 2026 - Oakworth Capital, Inc. filed a 13F-HR form disclosing ownership of 2,455 shares of Costco Wholesale Corporation (MX:COST) valued at $2,446,237 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 2,085 shares of Costco Wholesale Corporation. This represents a change in shares of 17.75% 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)
2026-04-24 2026-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 2,455 370 17.75 2,446 36.12 0.0619
2026-01-30 2025-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 2,085 -16 -0.76 1,798 -7.56 0.0982
2025-11-04 2025-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 2,101 158 8.13 1,945 1.09 0.1124
2025-07-17 2025-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,943 33 1.73 1,923 6.48 0.1240
2025-04-24 2025-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,910 -27 -1.39 1,806 1.80 0.1258
2025-01-27 2024-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,937 -1 -0.05 1,775 3.26 0.1221
2024-10-21 2024-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,938 99 5.38 1,718 9.92 0.1191
2024-07-19 2024-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,839 224 13.87 1,563 32.12 0.1142
2024-04-22 2024-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,615 0 0.00 1,183 10.98 0.0891
2024-01-31 2023-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,615 -15 -0.92 1,066 15.87 0.0855
2023-10-31 2023-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,630 54 3.43 921 8.49 0.0837
2023-07-28 2023-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,576 -13 -0.82 848 7.48 0.0721
2023-05-02 2023-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,589 10 0.63 790 9.58 0.0706
2023-02-03 2022-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,579 -29 -1.80 721 -5.14 0.0692
2022-10-31 2022-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,608 20 1.26 759 -0.26 0.0839
2022-08-05 2022-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,588 -536 -25.24 761 -37.78 0.0765
2022-04-11 2022-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 2,124 9 0.43 1,223 1.92 0.1053
2022-02-07 2021-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 2,115 181 9.36 1,200 38.09 0.1020
2021-11-10 2021-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,934 0 0.00 869 13.59 0.0839
2021-07-20 2021-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,934 27 1.42 765 13.84 0.0762
2021-04-30 2021-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,907 40 2.14 672 -4.41 0.0763
2021-02-12 2020-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,867 0 0.00 703 6.03 0.0911
2020-11-09 2020-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,867 0 0.00 663 17.14 0.1075
2020-08-11 2020-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,867 505 37.08 566 45.88 0.1017
2020-05-07 2020-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 1,362 498 57.64 388 52.76 0.0912
2020-01-31 2019-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 864 316 57.66 254 60.76 0.0446
2019-11-13 2019-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 158 8.97 0.0306
2019-08-02 2019-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 145 9.85 0.0276
2019-05-06 2019-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 132 17.86 0.0270
2019-02-13 2018-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 112 -12.50 0.0255
2018-10-25 2018-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 128 12.28 0.0256
2018-08-07 2018-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 114 5.56 0.0237
2018-05-09 2018-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 108 6.93 0.0258
2018-01-22 2017-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 101 17.44 0.0238
2017-11-08 2017-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 0 0.00 86 -2.27 0.0221
2017-07-31 2017-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 548 117 27.15 88 22.22 0.0241
2017-04-26 2017-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 431 -111 -20.48 72 -11.11 0.0208
2017-01-27 2016-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 542 250 85.62 81 80.00 0.0266
2016-10-24 2016-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 45 4.65 0.0156
2016-07-20 2016-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 43 -6.52 0.0161
2016-05-13 2016-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 46 -2.13 0.0184
2016-01-26 2015-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 47 11.90 0.0196
2015-10-29 2015-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 42 0.00 0.0221
2015-08-14 2015-06-30 13F/A-1 COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 42 0.00 0.0199
2015-07-14 2015-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 34
2015-05-12 2015-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 42 2.44 0.0194
2015-02-24 2014-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 41 17.14 0.0212
2014-10-09 2014-09-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 35 2.94 0.0205
2014-07-14 2014-06-30 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 34 3.03 0.0207
2014-04-10 2014-03-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 0 0.00 33 -5.71 0.0216
2014-01-27 2013-12-31 13F COSTCO WHOLESALE CORP COMMON STOCK 22160K105 292 292 35 0.0247
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.