Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
AKTIENPREIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionState Street Corp
Latest Disclosed Ownership18,152,232 shares
Latest Disclosed Value $ 18,087,428,532
State Street Corp reports 0.03% increase in ownership of CTO / Costco Wholesale Corporation

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 18,152,232 shares of Costco Wholesale Corporation (DE:CTO) valued at $15,772,474,385 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 18,147,159 shares of Costco Wholesale Corporation. This represents a change in shares of 0.03% during the quarter. The current value of the position is $15,302,331,576 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)
2026-05-15 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 18,152,232 5,073 0.03 18,087,429 15.58 0.6245
2026-02-13 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 18,147,159 -17,626 -0.10 15,649,021 -6.93 0.5250
2025-11-14 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 18,164,785 -160,631 -0.88 16,813,870 -7.32 0.5830
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 18,325,416 90,107 0.49 18,141,062 5.19 0.6799
2025-05-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 18,235,309 149,938 0.83 17,246,591 4.07 0.7107
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 18,085,371 43,307 0.24 16,571,435 3.61 0.6538
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 18,042,064 -586,023 -3.15 15,994,651 1.02 0.6508
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 18,628,087 108,783 0.59 15,833,688 16.70 0.6919
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 18,519,304 -141,933 -0.76 13,567,798 7.72 0.6065
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 18,661,237 202,311 1.10 12,595,729 20.78 0.6127
2023-11-14 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 18,458,926 -649,729 -3.40 10,428,555 1.37 0.5783
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 19,108,655 333,308 1.78 10,287,718 10.28 0.5403
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 18,775,347 -406,475 -2.12 9,328,883 6.54 0.5264
2023-05-15 2022-12-31 13F/A-99 COSTCO WHSL CORP COM 22160K105 19,181,822 380,074 2.02 8,756,502 -1.39 0.5145
2023-05-15 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 19,181,822 380,074 8,756,502 0.5145
2022-11-15 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 18,801,748 -116 -0.00 8,879,502 -1.46 0.5616
2022-08-15 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 18,801,864 -237,808 -1.25 9,011,357 -17.81 0.5400
2022-05-16 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 19,039,672 738,447 4.03 10,963,995 5.53 0.5422
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 18,301,225 1,697,920 10.23 10,389,605 39.26 0.4927
2021-11-15 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 16,603,305 -147,061 -0.88 7,460,695 12.57 0.3943
2021-08-16 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 16,750,366 108,923 0.65 6,627,617 12.99 0.3493
2021-07-09 2021-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 16,641,443 -520,091 -3.03 5,865,776 -9.28 0.3363
2021-05-17 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 16,641,443 -520,091 5,865,776 0.3364
2021-02-16 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 17,161,534 -915,229 -5.06 6,466,123 0.76 0.3959
2020-11-10 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 18,076,763 -333,466 -1.81 6,417,251 14.96 0.4381
2020-08-14 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 18,410,229 58,836 0.32 5,582,166 6.68 0.4058
2020-06-19 2020-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 18,351,393 -109,552 -0.59 5,232,533 -3.57 0.4576
2020-05-11 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 18,351,393 -109,552 5,232,533 459,521.7558
2020-02-06 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 18,460,945 93,587 0.51 5,426,041 2.54 0.3716
2019-11-14 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 18,367,358 102,456 0.56 5,291,820 9.64 0.3944
2019-08-14 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 18,264,902 52,411 0.29 4,826,683 9.45 0.3599
2019-05-15 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 18,212,491 509,799 2.88 4,409,973 22.29 0.3441
2019-02-12 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 17,702,692 402,171 2.32 3,606,215 -11.25 0.3283
2018-11-09 2018-09-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,300,521 555,267 3.32 4,063,546 16.12 0.3121
2018-08-14 2018-06-30 13F COSTCO WHOLESALE Common equity shares 22160K105 16,745,254 -539,895 -3.12 3,499,425 7.44 0.2925
2018-05-15 2018-03-31 13F COSTCO WHOLESALE Common equity shares 22160K105 17,285,149 -704,960 -3.92 3,257,041 -2.73 0.2765
2018-02-14 2017-12-31 13F COSTCO WHOLESALE Common equity shares 22160K105 17,990,109 352,225 2.00 3,348,313 15.55 0.2693
2017-11-14 2017-09-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,637,884 -510,852 -2.81 2,897,720 -0.17 0.2500
2017-08-14 2017-06-30 13F COSTCO WHOLESALE Common equity shares 22160K105 18,148,736 17,175 0.09 2,902,538 -4.54 0.2567
2017-05-15 2017-03-31 13F COSTCO WHOLESALE Common equity shares 22160K105 18,131,561 239,479 1.34 3,040,476 6.14 0.2712
2017-02-09 2016-12-31 13F COSTCO WHOLESALE Common equity shares 22160K105 17,892,082 306,669 1.74 2,864,688 6.81 0.2696
2017-01-13 2016-09-30 13F/A-1 COSTCO WHOLESALE Common equity shares 22160K105 17,585,413 153,651 0.88 2,681,952 -2.03 0.2703
2016-11-14 2016-09-30 13F COSTCO WHOLESALE Common equity shares 22160K105 12,815,906 1,954,555
2016-08-12 2016-06-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,431,762 -269,441 -1.52 2,737,508 -1.86 0.2941
2016-05-20 2016-03-31 13F/A-1 COSTCO WHOLESALE Common equity shares 22160K105 17,701,203 395,068 2.28 2,789,351 -0.20 0.3016
2016-05-12 2016-03-31 13F COSTCO WHOLESALE Common equity shares 22160K105 17,701,203 2,789,351
2016-02-16 2015-12-31 13F COSTCO WHOLESALE Common equity shares 22160K105 17,306,135 152,751 0.89 2,794,944 12.71 0.3055
2015-11-16 2015-09-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,153,384 -211,630 -1.22 2,479,868 5.74 0.2887
2015-08-13 2015-06-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,365,014 -959,818 -5.24 2,345,333 -15.52 0.2507
2015-05-15 2015-03-31 13F COSTCO WHOLESALE Common equity shares 22160K105 18,324,832 -1,361,268 -6.91 2,776,122 -0.52 0.2849
2015-02-11 2014-12-31 13F COSTCO WHOLESALE Common equity shares 22160K105 19,686,100 1,304,729 7.10 2,790,505 21.14 0.2779
2014-11-12 2014-09-30 13F/A-1 COSTCO WHOLESALE Common equity shares 22160K105 18,381,371 671,710 3.79 2,303,554 12.95 0.2479
2014-11-10 2014-09-30 13F COSTCO WHOLESALE Common equity shares 22160K105 18,381,371 2,303,554
2014-08-12 2014-06-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,709,661 390,482 2.25 2,039,447 5.44 0.2202
2014-05-15 2014-03-31 13F/A-1 COSTCO WHOLESALE Common equity shares 22160K105 17,319,179 -1,010,826 -5.51 1,934,208 -11.33 0.2198
2014-05-13 2014-03-31 13F COSTCO WHOLESALE Common equity shares 22160K105 17,319,179 1,934,208
2014-02-06 2013-12-31 13F/A-1 COSTCO WHOLESALE Common equity shares 22160K105 18,330,005 869,785 4.98 2,181,454 8.53 0.2427
2014-02-06 2013-12-31 13F COSTCO WHOLESALE Common equity shares 22160K105 17,496,692 1,728,146
2013-11-12 2013-09-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,460,220 -348,115 -1.95 2,010,026 2.08 0.2477
2013-08-08 2013-06-30 13F COSTCO WHOLESALE Common equity shares 22160K105 17,808,335 17,808,335 1,969,074 0.2567
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.