Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
DEL PRIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionAtlantic Trust, LLC
Latest Disclosed Ownership6,678 shares
Latest Disclosed Value $ 6,654,160
Atlantic Trust, LLC reports 0.26% increase in ownership of CTO / Costco Wholesale Corporation

On May 6, 2026 - Atlantic Trust, LLC filed a 13F-HR form disclosing ownership of 6,678 shares of Costco Wholesale Corporation (DE:CTO) valued at $5,802,514 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 6,661 shares of Costco Wholesale Corporation. This represents a change in shares of 0.26% during the quarter. The current value of the position is $5,629,554 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)
2026-05-06 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 6,678 17 0.26 6,654 15.84 1.0848
2026-02-09 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 6,661 -405 -5.73 5,744 -12.17 0.9042
2025-11-10 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 7,066 -555 -7.28 6,541 -13.31 1.1175
2025-08-08 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 7,621 252 3.42 7,544 8.25 1.4273
2025-05-09 2025-03-31 13F Costco Wholesale Com 22160K105 7,369 -89 -1.19 6,969 1.99 1.5512
2025-02-10 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 7,458 -211 -2.75 6,834 0.51 1.4769
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 7,669 194 2.60 6,799 7.00 1.6275
2024-08-09 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 7,475 51 0.69 6,354 16.80 1.5800
2024-05-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 7,424 -910 -10.92 5,439 -1.13 1.4225
2024-02-06 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 8,334 1,923 30.00 5,501 51.92 1.5042
2023-11-13 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 6,411 -889 -12.18 3,622 -0.25 1.1913
2023-08-08 2023-06-30 13F Costco Wholesale Com 22160K105 7,300 -1,473 -16.79 3,630 -16.72 1.1657
2023-05-10 2023-03-31 13F Costco Wholesale COM 22160K105 8,773 -81 -0.91 4,359 108,875.00 1.3908
2023-02-01 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 8,854 51 0.58 4 -99.90 1.3475
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 8,803 -204 -2.26 4,157 -3.71 1.4466
2022-08-11 2022-06-30 13F Costco Wholesale COM 22160K105 9,007 365 4.22 4,317 -13.26 3.2831
2022-05-16 2022-03-31 13F Costco Wholesale COM 22160K105 8,642 181 2.14 4,977 3.60 3.2273
2022-02-09 2021-12-31 13F Costco Wholesale Com 22160K105 8,461 -51 -0.60 4,804 25.59 2.8341
2021-11-02 2021-09-30 13F Costco Wholesale Com 22160K105 8,512 774 10.00 3,825 15.87 2.4223
2021-08-12 2021-06-30 13F Costco Wholesale Com 22160K105 7,738 -519 -6.29 3,301 13.44 2.1533
2021-04-30 2021-03-31 13F Costco Wholesale Com 22160K105 8,257 369 4.68 2,910 -2.09 2.1546
2021-02-16 2020-12-31 13F Costco Wholesale Com 22160K105 7,888 65 0.83 2,972 7.02 1.7671
2020-10-23 2020-09-30 13F Costco Wholesale Com 22160K105 7,823 402 5.42 2,777 23.42 2.2057
2020-08-17 2020-06-30 13F Costco Wholesale Com 22160K105 7,421 -1,527 -17.07 2,250 -11.83 1.8956
2020-05-12 2020-03-31 13F Costco Wholesale Com 22160K105 8,948 -326 -3.52 2,552 -6.38 2.3083
2020-02-03 2019-12-31 13F Costco Wholesale Com 22160K105 9,274 75 0.82 2,726 2.87 1.9971
2019-11-07 2019-09-30 13F Costco Wholesale Com 22160K105 9,199 82 0.90 2,650 10.00 2.0657
2019-07-31 2019-06-30 13F Costco Wholesale Com 22160K105 9,117 165 1.84 2,409 11.12 1.9234
2019-05-13 2019-03-31 13F Costco Wholesale Com 22160K105 8,952 5,618 168.51 2,168 219.29 1.8093
2019-02-13 2018-12-31 13F/A-1 Costco Wholesale Com 22160K105 3,334 3,334 679 0.6312
2019-02-13 2018-12-31 13F Costco Wholesale Com 22160K105 3,334 679 0.6314
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.