Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionJohnson Financial Group, Inc.
Latest Disclosed Ownership3,316 shares
Latest Disclosed Value $ 3,304,163
Johnson Financial Group, Inc. reports 1.66% increase in ownership of COST / Costco Wholesale Corporation

On May 7, 2026 - Johnson Financial Group, Inc. filed a 13F-HR form disclosing ownership of 3,316 shares of Costco Wholesale Corporation (MX:COST) valued at $3,304,163 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 3,262 shares of Costco Wholesale Corporation. This represents a change in shares of 1.66% 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)
2026-05-07 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 3,316 54 1.66 3,304 17.50 0.1196
2026-02-12 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 3,262 -155 -4.54 2,813 -11.07 0.1053
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 3,417 221 6.91 3,163 -0.03 0.1187
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 3,196 606 23.40 3,164 29.15 0.1424
2025-05-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 2,590 -179 -6.46 2,450 -9.73 0.1199
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 2,769 2 0.07 2,713 10.60 0.1283
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 2,767 -741 -21.12 2,453 -17.71 0.1121
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 3,508 1,376 64.54 2,982 90.97 0.1445
2024-05-14 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 2,132 -160 -6.98 1,562 3.24 0.0840
2024-02-09 2023-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 2,292 -82 -3.45 1,513 12.75 0.0828
2024-02-09 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 2,292 -82 1,513 0.0499
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 2,374 25 1.06 1,341 6.09 0.0932
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 2,349 991 72.97 1,265 87.54 0.0875
2023-05-12 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 1,358 445 48.74 675 62.02 0.0481
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 913 -41 -4.30 417 -12.97 0.0330
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 954 -644 -40.30 478 -37.60 0.0441
2022-08-15 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 1,598 -189 -10.58 766 -25.56 0.0549
2022-05-16 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 1,787 18 1.02 1,029 2.49 0.0727
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 1,769 -347 -16.40 1,004 5.57 0.0637
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 2,116 -101 -4.56 951 8.31 0.0647
2021-08-13 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 2,217 243 12.31 878 26.15 0.0574
2021-05-14 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 1,974 -89 -4.31 696 -10.42 0.0468
2021-02-12 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 2,063 312 17.82 777 25.12 0.0664
2020-11-12 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 1,751 31 1.80 621 18.97 0.0635
2020-08-11 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 1,720 768 80.67 522 91.91 0.0561
2020-05-14 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 952 166 21.12 272 17.75 0.0325
2020-02-14 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 786 -1,780 -69.37 231 -68.74 0.0209
2019-11-12 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 2,566 -104 -3.90 739 4.82 0.0678
2019-08-09 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 2,670 343 14.74 705 25.00 0.0627
2019-05-13 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 2,327 187 8.74 564 29.36 0.0500
2019-02-11 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 2,140 -58 -2.64 436 -15.50 0.0449
2018-11-09 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 2,198 122 5.88 516 18.89 0.0526
2018-08-07 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 2,076 38 1.86 434 13.02 0.0476
2018-05-07 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 2,038 420 25.96 384 27.57 0.0459
2018-02-12 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 1,618 0 0.00 301 13.16 0.0369
2017-11-09 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 1,618 0 0.00 266 2.70 0.0350
2017-08-10 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 1,618 -3,289 -67.03 259 -68.49 0.0373
2017-05-12 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 4,907 60 1.24 822 6.06 0.1035
2017-02-07 2016-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 4,847 1,253 34.86 775 41.17 0.1069
2017-02-02 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 4,847 775
2016-11-14 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 3,594 -1,353 -27.35 549 -29.34 0.0733
2016-08-12 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 4,947 1,256 34.03 777 33.73 0.1076
2016-05-09 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 3,691 0 0.00 581 -2.68 0.1162
2016-02-08 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 3,691 -1,889 -33.85 597 -25.93 0.1241
2015-11-02 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 5,580 -316 -5.36 806 1.13 0.1764
2015-08-11 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 5,896 74 1.27 797 -9.74 0.1652
2015-05-12 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 5,822 122 2.14 883 9.15 0.1895
2015-02-10 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 5,700 -28 -0.49 809 12.67 0.1877
2014-11-14 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 5,728 305 5.62 718 14.88 0.1872
2014-08-06 2014-06-30 13F COSTCO WHSL COM 22160K105 5,423 1,890 53.50 625 58.63 0.1648
2014-05-14 2014-03-31 13F COSTCO WHSL COM 22160K105 3,533 32 0.91 394 -5.52 0.1151
2014-02-11 2013-12-31 13F COSTCO WHSL COM 22160K105 3,501 -1,393 -28.46 417 -26.06 0.1207
2013-11-14 2013-09-30 13F COSTCO WHSL COM 22160K105 4,894 -1,897 -27.93 564 -24.90 0.1711
2013-08-14 2013-06-30 13F COSTCO WHSL COM 22160K105 6,791 6,791 751 0.2091
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.