Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
CENA AKCJI
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionBokf, Na
Latest Disclosed Ownership28,415 shares
Latest Disclosed Value $ 28,313,559
Bokf, Na reports 6.85% increase in ownership of CTO / Costco Wholesale Corporation

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 28,415 shares of Costco Wholesale Corporation (DE:CTO) valued at $24,689,794 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 26,593 shares of Costco Wholesale Corporation. This represents a change in shares of 6.85% during the quarter. The current value of the position is $23,953,845 USD.

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)
2026-05-08 2026-03-31 13F COSTCO WHOLESALE common 22160K105 28,415 1,822 6.85 28,314 23.47 0.4330
2026-02-03 2025-12-31 13F COSTCO WHOLESALE common 22160K105 26,593 -3,344 -11.17 22,932 -17.24 0.3510
2025-11-13 2025-09-30 13F COSTCO WHOLESALE common 22160K105 29,937 16 0.05 27,711 -6.45 0.4169
2025-08-12 2025-06-30 13F COSTCO WHOLESALE common 22160K105 29,921 -1,587 -5.04 29,620 -0.60 0.4797
2025-05-13 2025-03-31 13F COSTCO WHOLESALE common 22160K105 31,508 -1,214 -3.71 29,800 -2.80 0.5269
2025-02-14 2024-12-31 13F COSTCO WHOLESALE common 22160K105 32,722 -226 -0.69 30,659 6.26 0.5179
2024-11-14 2024-09-30 13F COSTCO WHOLESALE common 22160K105 32,948 -825 -2.44 28,852 0.51 0.5120
2024-08-08 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 33,773 -893 -2.58 28,707 14.81 0.5153
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 34,666 -6,451 -15.69 25,003 -7.88 0.4552
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 41,117 170 0.42 27,141 19.98 0.5314
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 40,947 -163 -0.40 22,621 2.20 0.4986
2023-08-21 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 41,110 -5,713 -12.20 22,133 -4.87 0.4508
2023-05-11 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 46,823 -4,033 -7.93 23,265 0.21 0.4868
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 50,856 -5,075 -9.07 23,216 -12.11 0.4284
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 55,931 2,095 3.89 26,415 2.38 0.5345
2022-08-11 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 53,836 2,039 3.94 25,802 -13.50 0.4946
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 51,797 4,785 10.18 29,828 11.76 0.4916
2022-03-11 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 47,012 1,461 3.21 26,689 30.39 0.4130
2021-11-10 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 45,551 -6,945 -13.23 20,468 10.61 0.3519
2021-04-21 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 52,496 -3,969 -7.03 18,504 -13.02 0.3365
2021-02-12 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 56,465 5,691 11.21 21,275 18.03 0.4059
2020-10-30 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 50,774 3,404 7.19 18,025 25.50 0.3960
2020-08-12 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 47,370 7,550 18.96 14,363 26.51 0.3378
2020-05-13 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 39,820 6,479 19.43 11,353 15.86 0.3271
2020-02-12 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 33,341 49 0.15 9,799 2.16 0.2215
2019-11-13 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 33,292 634 1.94 9,592 11.15 0.2310
2019-08-14 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 32,658 -283 -0.86 8,630 8.20 0.2073
2019-05-15 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 32,941 653 2.02 7,976 21.25 0.1909
2019-02-13 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 32,288 -653 -1.98 6,578 -14.99 0.1882
2018-11-13 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 32,941 7,111 27.53 7,738 43.35 0.1942
2018-08-13 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 25,830 443 1.74 5,398 12.83 0.1453
2018-05-14 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 25,387 -2,992 -10.54 4,784 -9.43 0.1359
2018-02-14 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 28,379 -469 -1.63 5,282 11.46 0.1455
2017-11-14 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 28,848 -10,048 -25.83 4,739 -23.82 0.1376
2017-08-14 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 38,896 -2,179 -5.30 6,221 -9.68 0.1957
2017-05-15 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 41,075 -1,022 -2.43 6,888 2.20 0.2149
2017-02-14 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 42,097 1,369 3.36 6,740 8.52 0.2217
2016-11-10 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 40,728 -5,137 -11.20 6,211 -13.77 0.2056
2016-08-12 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 45,865 -667 -1.43 7,203 -1.77 0.2538
2016-05-13 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 46,532 -1,930 -3.98 7,333 -6.30 0.2651
2016-02-09 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 48,462 2,703 5.91 7,826 18.31 0.2830
2015-11-13 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 45,759 20,616 81.99 6,615 94.79 0.2490
2015-08-13 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 25,143 -103 -0.41 3,396 -11.22 0.1153
2015-05-14 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 25,246 3,773 17.57 3,825 25.66 0.1287
2015-02-12 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 21,473 -3,989 -15.67 3,044 -4.61 0.1051
2014-11-13 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 25,462 -1,955 -7.13 3,191 1.08 0.1067
2014-08-14 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 27,417 4,248 18.33 3,157 21.99 0.1013
2014-05-14 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 23,169 610 2.70 2,588 -3.61 0.0858
2014-02-14 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 22,559 -2,950 -11.56 2,685 -8.61 0.0900
2013-11-12 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 25,509 822 3.33 2,938 7.62 0.1067
2013-08-14 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 24,687 24,687 2,730 0.1031
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.