Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
DEL PRIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionSpinnaker Trust
Latest Disclosed Ownership7,684 shares
Latest Disclosed Value $ 7,656,584
Spinnaker Trust reports 1.63% increase in ownership of CTO / Costco Wholesale Corporation

On April 23, 2026 - Spinnaker Trust filed a 13F-HR form disclosing ownership of 7,684 shares of Costco Wholesale Corporation (DE:CTO) valued at $6,676,628 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 7,561 shares of Costco Wholesale Corporation. This represents a change in shares of 1.63% during the quarter. The current value of the position is $6,477,612 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)
2026-04-23 2026-03-31 13F Costco Wholesale Equities 22160K105 7,684 123 1.63 7,657 17.42 0.4237
2026-02-10 2025-12-31 13F Costco Wholesale Equities 22160K105 7,561 -97 -1.27 6,520 -8.01 0.3490
2025-11-05 2025-09-30 13F Costco Wholesale Equities 22160K105 7,658 -19 -0.25 7,088 -6.72 0.3933
2025-08-04 2025-06-30 13F Costco Wholesale Equities 22160K105 7,677 184 2.46 7,600 7.24 0.4571
2025-04-25 2025-03-31 13F Costco Wholesale Equities 22160K105 7,493 -39 -0.52 7,087 2.68 0.4626
2025-01-30 2024-12-31 13F Costco Wholesale Equities 22160K105 7,532 41 0.55 6,901 3.93 0.4352
2024-10-31 2024-09-30 13F Costco Wholesale Equities 22160K105 7,491 -426 -5.38 6,641 -1.32 0.4093
2024-07-31 2024-06-30 13F Costco Wholesale Equities 22160K105 7,917 -250 -3.06 6,729 12.47 0.4309
2024-05-06 2024-03-31 13F Costco Wholesale Equities 22160K105 8,167 -599 -6.83 5,983 3.40 0.3863
2024-02-02 2023-12-31 13F Costco Wholesale Equities 22160K105 8,766 245 2.88 5,786 20.19 0.3936
2023-11-08 2023-09-30 13F Costco Wholesale Equities 22160K105 8,521 -515 -5.70 4,814 -1.03 0.3624
2023-08-01 2023-06-30 13F Costco Wholesale Equities 22160K105 9,036 -1,377 -13.22 4,865 -5.97 0.3534
2023-04-13 2023-03-31 13F Costco Wholesale Equities 22160K105 10,413 -1,402 -11.87 5,174 103,360.00 0.3921
2023-02-02 2022-12-31 13F Costco Wholesale Equities 22160K105 11,815 235 2.03 5 -99.91 0.4202
2022-10-28 2022-09-30 13F Costco Wholesale Equities 22160K105 11,580 343 3.05 5,469 1.54 0.4535
2022-07-25 2022-06-30 13F Costco Wholesale Equities 22160K105 11,237 93 0.83 5,386 -16.07 0.4155
2022-05-02 2022-03-31 13F Costco Wholesale Equities 22160K105 11,144 503 4.73 6,417 6.24 0.4327
2022-01-31 2021-12-31 13F Costco Wholesale Equities 22160K105 10,641 110 1.04 6,040 27.64 0.3869
2021-11-02 2021-09-30 13F Costco Wholesale Equities 22160K105 10,531 514 5.13 4,732 19.37 0.3292
2021-08-09 2021-06-30 13F Costco Wholesale Equities 22160K105 10,017 962 10.62 3,964 24.22 0.2761
2021-04-30 2021-03-31 13F Costco Wholesale Equities 22160K105 9,055 6,195 216.61 3,191 196.29 0.2395
2021-01-26 2020-12-31 13F Costco Wholesale Equities 22160K105 2,860 -150 -4.98 1,077 0.84 0.0859
2020-10-27 2020-09-30 13F Costco Wholesale Equities 22160K105 3,010 0 0.00 1,068 17.11 0.0947
2020-07-21 2020-06-30 13F Costco Wholesale Equities 22160K105 3,010 -192 -6.00 912 0.00 0.0864
2020-05-05 2020-03-31 13F Costco Wholesale Equities 22160K105 3,202 0 0.00 912 -3.08 0.1003
2020-02-05 2019-12-31 13F Costco Wholesale Equities 22160K105 3,202 174 5.75 941 7.91 0.0859
2019-11-12 2019-09-30 13F Costco Wholesale Equities 22160K105 3,028 18 0.60 872 9.69 0.0860
2019-07-11 2019-06-30 13F Costco Wholesale Equities 22160K105 3,010 0 0.00 795 9.20 0.0798
2019-04-29 2019-03-31 13F Costco Wholesale Equities 22160K105 3,010 1,489 97.90 728 135.60 0.0732
2019-02-04 2018-12-31 13F Costco Wholesale Equities 22160K105 1,521 11 0.73 309 -12.71 0.0351
2018-10-23 2018-09-30 13F Costco Wholesale Equities 22160K105 1,510 0 0.00 354 12.38 0.0350
2018-08-02 2018-06-30 13F Costco Wholesale Equities 22160K105 1,510 0 0.00 315 10.92 0.0336
2018-05-10 2018-03-31 13F Costco Wholesale Equities 22160K105 1,510 0 0.00 284 1.07 0.0309
2018-02-09 2017-12-31 13F Costco Wholesale Equities 22160K105 1,510 0 0.00 281 13.31 0.0326
2017-10-26 2017-09-30 13F Costco Wholesale Equities 22160K105 1,510 0 0.00 248 2.90 0.0310
2017-07-27 2017-06-30 13F Costco Wholesale Com 22160K105 1,510 0 0.00 241 -4.74 0.0301
2017-05-10 2017-03-31 13F Costco Wholesale Com 22160K105 1,510 -19 -1.24 253 3.27 0.0329
2017-02-15 2016-12-31 13F Costco Wholesale Com 22160K105 1,529 -5 -0.33 245 1.24 0.0330
2016-11-03 2016-09-30 13F Costco Wholesale Com 22160K105 1,534 0 0.00 242 0.41 0.0340
2016-08-01 2016-06-30 13F Costco Wholesale Com 22160K105 1,534 0 0.00 241 -0.41 0.0332
2016-05-05 2016-03-31 13F Costco Wholesale Com 22160K105 1,534 5 0.33 242 -2.02 0.0340
2016-01-29 2015-12-31 13F Costco Wholesale Com 22160K105 1,529 1,529 247 0.0353
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.