코스트코 도매공사
DE ˙ XTRA ˙ US22160K1051
€843.00 ↑27.00 (3.31%)
2026-06-04
주가
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionWASHINGTON TRUST Co
Latest Disclosed Ownership27,570 shares
Latest Disclosed Value $ 27,471,575
WASHINGTON TRUST Co reports 1.17% decrease in ownership of CTO / Costco Wholesale Corporation

On April 6, 2026 - WASHINGTON TRUST Co filed a 13F-HR form disclosing ownership of 27,570 shares of Costco Wholesale Corporation (DE:CTO) valued at $23,955,573 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 27,895 shares of Costco Wholesale Corporation. This represents a change in shares of -1.17% during the quarter. The current value of the position is $23,241,510 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)
2026-04-06 2026-03-31 13F COSTCO WHOLESALE Equities 22160K105 27,570 -325 -1.17 27,472 14.21 0.8936
2026-02-10 2025-12-31 13F COSTCO WHOLESALE Equities 22160K105 27,895 -576 -2.02 24,055 -8.72 0.7862
2025-11-12 2025-09-30 13F COSTCO WHOLESALE Equities 22160K105 28,471 191 0.68 26,354 -5.87 0.8647
2025-08-08 2025-06-30 13F COSTCO WHOLESALE Equities 22160K105 28,280 -325 -1.14 27,996 3.48 0.9897
2025-04-25 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 28,605 -1,518 -5.04 27,054 -1.98 1.0370
2025-01-30 2024-12-31 13F Costco Wholesale COM 22160K105 30,123 -806 -2.61 27,601 0.66 0.9901
2024-10-25 2024-09-30 13F Costco Wholesale COM 22160K105 30,929 -662 -2.10 27,419 2.11 0.9612
2024-07-15 2024-06-30 13F Costco Wholesale COM 22160K105 31,591 -1,189 -3.63 26,852 11.81 0.9822
2024-04-23 2024-03-31 13F Costco Wholesale COM 22160K105 32,780 -331 -1.00 24,016 9.88 0.8823
2024-01-18 2023-12-31 13F Costco Wholesale COM 22160K105 33,111 -444 -1.32 21,856 15.29 0.8649
2023-10-18 2023-09-30 13F Costco Wholesale COM 22160K105 33,555 -34 -0.10 18,957 4.83 0.8339
2023-07-27 2023-06-30 13F Costco Wholesale COM 22160K105 33,589 -218 -0.64 18,084 7.66 0.7626
2023-05-10 2023-03-31 13F/A-1 Costco Wholesale COM 22160K105 33,807 -376 -1.10 16,798 7.65 0.7567
2023-05-04 2023-03-31 13F Costco Wholesale COM 22160K105 34 -34,131 17 0.7083
2023-07-27 2022-12-31 13F/A-1 Costco Wholesale COM 22160K105 34,183 -2,186 -6.01 15,605 -9.15 0.7270
2023-02-08 2022-12-31 13F Costco Wholesale COM 22160K105 34,165 -2,204 16 0.0007
2022-10-14 2022-09-30 13F Costco Wholesale COM 22160K105 36,369 -320 -0.87 17,176 -2.32 0.8650
2022-07-25 2022-06-30 13F Costco Wholesale COM 22160K105 36,689 -339 -0.92 17,584 -17.54 0.8256
2022-05-05 2022-03-31 13F Costco Wholesale COM 22160K105 37,028 835 2.31 21,323 3.78 0.8437
2022-02-09 2021-12-31 13F/A-1 Costco Wholesale COM 22160K105 36,193 -2,049 -5.36 20,547 19.57 0.7709
2022-02-09 2021-12-31 13F Costco Wholesale COM 22160K105 36,193 -2,049 20,547 0.7190
2021-11-09 2021-09-30 13F Costco Wholesale COM 22160K105 38,242 662 1.76 17,184 15.56 0.4845
2021-08-05 2021-06-30 13F Costco Wholesale COM 22160K105 37,580 -95 -0.25 14,870 11.98 0.4194
2021-04-28 2021-03-31 13F Costco Wholesale COM 22160K105 37,675 517 1.39 13,279 -5.15 0.4076
2021-02-09 2020-12-31 13F Costco Wholesale COM 22160K105 37,158 -377 -1.00 14,000 5.07 0.4519
2020-11-05 2020-09-30 13F Costco Wholesale COM 22160K105 37,535 -409 -1.08 13,325 16.41 0.4922
2020-08-04 2020-06-30 13F Costco Wholesale COM 22160K105 37,944 -676 -1.75 11,447 3.94 0.4754
2020-05-07 2020-03-31 13F Costco Wholesale COM 22160K105 38,620 -151 -0.39 11,013 -3.36 0.5250
2020-02-12 2019-12-31 13F Costco Wholesale COM 22160K105 38,771 1,797 4.86 11,396 3.74 0.4490
2019-11-06 2019-09-30 13F Costco Wholesale COM 22160K105 36,974 -279 -0.75 10,985 11.58 0.5880
2019-08-07 2019-06-30 13F Costco Wholesale COM 22160K105 37,253 -310 -0.83 9,845 8.59 0.5391
2019-05-13 2019-03-31 13F Costco Wholesale COM 22160K105 37,563 -404 -1.06 9,066 17.22 0.5072
2019-02-11 2018-12-31 13F Costco Wholesale COM 22160K105 37,967 -1,150 -2.94 7,734 -15.82 0.4919
2018-11-13 2018-09-30 13F Costco Wholesale COM 22160K105 39,117 -496 -1.25 9,188 10.99 0.4918
2018-08-10 2018-06-30 13F Costco Wholesale COM 22160K105 39,613 482 1.23 8,278 12.27 0.4436
2018-05-10 2018-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 39,131 -611 -1.54 7,373 -0.32 0.4321
2018-02-05 2017-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 39,742 4,730 13.51 7,397 28.62 0.4163
2017-10-31 2017-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 35,012 1,436 4.28 5,751 7.09 0.3420
2017-08-03 2017-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 33,576 5,709 20.49 5,370 14.94 0.3272
2017-05-01 2017-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 27,867 21,222 319.37 4,672 339.10 0.2961
2017-02-08 2016-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 6,645 72 1.10 1,064 6.19 0.0689
2016-11-03 2016-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 6,573 -24 -0.36 1,002 -3.28 0.0659
2016-08-11 2016-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 6,597 -139 -2.06 1,036 -2.45 0.0700
2016-05-05 2016-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 6,736 81 1.22 1,062 -1.21 0.0709
2016-02-12 2015-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 6,655 353 5.60 1,075 17.87 0.0734
2015-11-12 2015-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 6,302 -395 -5.90 912 0.77 0.0658
2015-08-07 2015-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 6,697 333 5.23 905 -6.22 0.0596
2015-05-05 2015-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 6,364 -77 -1.20 965 5.70 0.0641
2015-02-11 2014-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 6,441 837 14.94 913 30.06 0.0627
2014-11-12 2014-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 5,604 -193 -3.33 702 5.25 0.0514
2014-08-12 2014-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 5,797 118 2.08 667 5.04 0.0489
2014-05-09 2014-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 5,679 -4,605 -44.78 635 -48.12 0.0478
2014-02-13 2013-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 10,284 634 6.57 1,224 10.17 0.0932
2013-11-08 2013-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 9,650 106 1.11 1,111 5.21 0.0890
2013-08-14 2013-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 9,544 9,544 1,056 0.0891
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.