Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
CENA AKCJI
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership388,793 shares
Latest Disclosed Value $ 387,400,086
Janus Henderson Group Plc reports 0.68% increase in ownership of CTO / Costco Wholesale Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 388,793 shares of Costco Wholesale Corporation (DE:CTO) valued at $337,822,238 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 386,163 shares of Costco Wholesale Corporation. This represents a change in shares of 0.68% during the quarter. The current value of the position is $327,752,499 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-18 2026-03-31 13F/A-1 COSTCO WHOLESALE COM 22160K105 388,793 2,630 0.68 387,400 16.34 0.0653
2026-05-15 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 388,793 2,630 0.68 387,400 16.34 0.0719
2026-02-17 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 386,163 0 0.00 332,998 -6.84 0.1491
2025-11-14 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 386,163 -4,553 -1.17 357,441 -7.58 0.1632
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 390,716 -17,833 -4.36 386,769 1.83 0.1896
2025-05-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 408,549 -9,272 -2.22 379,827 -0.79 0.2082
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 417,821 -952 -0.23 382,848 3.13 0.1946
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 418,773 -167,902 -28.62 371,238 -25.55 0.1900
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 586,675 -19,834 -3.27 498,669 12.23 0.2670
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 606,509 -112,388 -15.63 444,333 -6.37 0.2424
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 718,897 -8,738 -1.20 474,543 15.44 0.2830
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 727,635 18,306 2.58 411,082 7.64 0.2692
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 709,329 -6,941 -0.97 381,890 7.30 0.2375
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 716,270 -6,551 -0.91 355,901 7.86 0.2347
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 722,821 -77,602 -9.70 329,973 -12.71 0.2357
2023-01-13 2022-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 800,423 -257,951 -24.37 378,018 -25.48 0.2832
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 800,423 -257,951 378,018 0.2830
2022-08-15 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 1,058,374 -682,605 -39.21 507,266 -49.40 0.3498
2022-05-16 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 1,740,979 -233,379 -11.82 1,002,536 -10.56 0.4841
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 1,974,358 -64,637 -3.17 1,120,845 22.33 0.4675
2021-11-16 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 2,038,995 -5,848 -0.29 916,228 13.24 0.4007
2021-08-16 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 2,044,843 -124,278 -5.73 809,087 5.82 0.3463
2021-05-17 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 2,169,121 89,906 4.32 764,576 -2.40 0.3491
2021-02-16 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 2,079,215 39,021 1.91 783,396 8.17 0.3640
2020-11-16 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 2,040,194 105,595 5.46 724,257 23.47 0.3776
2020-08-14 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 1,934,599 -54,158 -2.72 586,580 3.44 0.3293
2020-05-14 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 1,988,757 -437,105 -18.02 567,071 -20.47 0.3903
2020-02-18 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 2,425,862 -490,975 -16.83 713,005 -15.16 0.3651
2019-11-14 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 2,916,837 116,507 4.16 840,372 13.56 0.4552
2019-07-31 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 2,800,330 -172,479 -5.80 740,005 2.80 0.4030
2019-04-30 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 2,972,809 137,549 4.85 719,849 24.63 0.3990
2019-02-06 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 2,835,260 714,839 33.71 577,574 15.97 0.3684
2018-11-09 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 2,120,421 177,810 9.15 498,047 22.68 0.2661
2018-08-10 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 1,942,611 -426,360 -18.00 405,972 -9.04 0.2314
2018-05-14 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 2,368,971 -420,659 -15.08 446,304 -14.04 0.2630
2018-03-12 2017-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 2,789,630 -163,538 -5.54 519,218 7.02 0.3197
2018-02-09 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 2,789,630 -163,538 519,218
2017-11-14 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 2,953,168 -1,227,602 -29.36 485,175 -27.44 0.3110
2017-08-17 2017-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 4,180,770 4,046,164 3,005.93 668,630 2,861.82 0.4557
2017-08-14 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 4,180,770 4,046,164 668,630
2017-05-03 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 134,606 -18,280 -11.96 22,575 -7.78 0.1585
2017-01-30 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 152,886 -1,847 -1.19 24,479 3.73 0.1805
2016-10-24 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 154,733 -9,463 -5.76 23,599 -8.50 0.1739
2016-07-29 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 164,196 -8,676 -5.02 25,791 -5.36 0.2145
2016-05-12 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 172,872 96,071 125.09 27,252 119.72 0.2211
2016-02-03 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 76,801 -177 -0.23 12,403 11.46 0.0995
2015-11-16 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 76,978 -807 -1.04 11,128 5.90 0.0980
2015-08-17 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 77,785 4,319 5.88 10,508 -5.59 0.0826
2015-06-02 2015-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 73,466 -359 -0.49 11,130 6.34 0.0859
2015-05-15 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 73,466 11,130
2015-02-12 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 73,825 14,402 24.24 10,466 40.54 0.0755
2014-11-12 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 59,423 -8,627 -12.68 7,447 -4.98 0.0700
2014-08-13 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 68,050 0 0.00 7,837 3.13 0.0732
2014-05-08 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 68,050 13,270 24.22 7,599 16.57 0.0740
2014-01-14 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 54,780 3,112 6.02 6,519 9.56 0.0659
2013-11-12 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 51,668 -68 -0.13 5,950 4.15 0.0656
2013-08-15 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 51,736 51,736 5,713 0.0668
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.