Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionUtah Retirement Systems
Latest Disclosed Ownership72,165 shares
Latest Disclosed Value $ 71,907,371
Utah Retirement Systems reports 1.60% decrease in ownership of COST / Costco Wholesale Corporation

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 72,165 shares of Costco Wholesale Corporation (MX:COST) valued at $71,907,371 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 73,336 shares of Costco Wholesale Corporation. This represents a change in shares of -1.60% 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)
2026-05-15 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 72,165 -1,171 -1.60 71,907 13.70 0.7350
2026-02-17 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 73,336 -15 -0.02 63,241 -6.86 0.6017
2025-11-14 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 73,351 259 0.35 67,896 -6.17 0.6595
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 73,092 -338 -0.46 72,357 4.19 0.7556
2025-05-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 73,430 -122 -0.17 69,449 3.05 0.8011
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 73,552 173 0.24 67,393 3.60 0.7424
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 73,379 326 0.45 65,052 4.76 0.7340
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 73,053 -3,892 -5.06 62,094 10.15 0.7374
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 76,945 30 0.04 56,372 11.03 0.6591
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 76,915 530 0.69 50,770 17.65 0.6466
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 76,385 300 0.39 43,154 5.35 0.6168
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 76,085 -2,800 -3.55 40,963 4.51 0.5680
2023-05-16 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 78,885 250 0.32 39,196 9.19 0.5668
2023-02-15 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 78,635 -797 -1.00 35,897 -4.31 0.5693
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 79,432 400 0.51 37,514 -0.96 0.6255
2022-08-16 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 79,032 153 0.19 37,879 -16.61 0.6065
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 78,879 -1,377 -1.72 45,422 -0.31 0.6045
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 80,256 200 0.25 45,561 26.65 0.5630
2021-11-16 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 80,056 -4,200 -4.98 35,973 7.90 0.4864
2021-08-16 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 84,256 -546 -0.64 33,338 11.53 0.4291
2021-05-17 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 84,802 -3,700 -4.18 29,891 -10.36 0.4166
2021-02-16 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 88,502 3,800 4.49 33,346 10.90 0.4733
2020-11-16 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 84,702 500 0.59 30,069 17.77 0.4991
2020-08-13 2020-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 84,202 400 0.48 25,531 6.85 0.4686
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 84,202 400 25,531 468,597.1452
2020-05-15 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 83,802 0 0.00 23,895 -2.99 0.5169
2020-02-12 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 83,802 200 0.24 24,632 2.26 0.4330
2019-11-14 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 83,602 500 0.60 24,087 9.69 0.4583
2019-08-14 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 83,102 520 0.63 21,960 9.82 0.4206
2019-05-15 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 82,582 1,081 1.33 19,997 20.44 0.3963
2019-02-08 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 81,501 200 0.25 16,603 -13.06 0.3754
2018-11-13 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 81,301 400 0.49 19,096 12.95 0.3699
2018-08-10 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 80,901 -400 -0.49 16,906 10.36 0.3499
2018-05-15 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 81,301 100 0.12 15,319 1.36 0.3259
2018-02-14 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 81,201 1,100 1.37 15,113 14.84 0.3176
2017-11-13 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 80,101 100 0.12 13,160 2.85 0.2960
2017-08-08 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 80,001 100 0.13 12,795 -4.51 0.2982
2017-05-11 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 79,901 100 0.13 13,399 4.87 0.3205
2017-02-10 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 79,801 0 0.00 12,777 4.98 0.3214
2016-11-07 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 79,801 0 0.00 12,171 -2.88 0.3150
2016-08-03 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 79,801 700 0.88 12,532 0.55 0.3340
2016-05-10 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 79,101 100 0.13 12,464 -2.31 0.3380
2016-02-11 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 79,001 100 0.13 12,759 11.85 0.3459
2015-11-03 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 78,901 500 0.64 11,407 7.72 0.3266
2015-08-11 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 78,401 -300 -0.38 10,589 -11.19 0.2814
2015-05-14 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 78,701 2,600 3.42 11,923 10.52 0.3132
2015-02-11 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 76,101 0 0.00 10,788 13.12 0.2966
2014-11-06 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 76,101 -200 -0.26 9,537 8.55 0.2735
2014-08-08 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 76,301 -2,200 -2.80 8,786 0.22 0.2517
2014-05-08 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 78,501 600 0.77 8,767 -5.44 0.2528
2014-02-05 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 77,901 0 0.00 9,271 3.38 0.2743
2013-11-06 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 77,901 -700 -0.89 8,968 3.19 0.2902
2013-08-02 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 78,601 78,601 8,691 0.2936
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.