Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
DEL PRIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionDe Burlo Group Inc
Latest Disclosed Ownership12,317 shares
Latest Disclosed Value $ 12,273,111
De Burlo Group Inc reports 37.88% decrease in ownership of CTO / Costco Wholesale Corporation

On May 14, 2026 - De Burlo Group Inc filed a 13F-HR form disclosing ownership of 12,317 shares of Costco Wholesale Corporation (DE:CTO) valued at $10,702,241 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 19,827 shares of Costco Wholesale Corporation. This represents a change in shares of -37.88% during the quarter. The current value of the position is $10,383,231 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)
2026-05-14 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 12,317 -7,510 -37.88 12,273 -28.22 2.7813
2026-02-13 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 19,827 0 0.00 17,098 -6.84 2.0752
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 19,827 79 0.40 18,352 -6.12 2.2114
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 19,748 73 0.37 19,549 5.06 2.5754
2025-05-07 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 19,675 -6,680 -25.35 18,608 -22.94 2.7473
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 26,355 -2,295 -8.01 24,148 -4.92 3.2227
2024-11-12 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 28,650 -4,285 -13.01 25,399 -9.27 3.1275
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 32,935 8,970 37.43 27,994 59.45 3.7629
2024-05-13 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 23,965 -5,280 -18.05 17,557 6.26 2.3303
2024-02-13 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 29,245 0 0.00 16,522 0.00 2.8705
2023-11-13 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 29,245 4,145 16.51 16,522 22.27 2.8705
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 25,100 0 0.00 13,513 8.36 2.2485
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 25,100 4,600 22.44 12,471 33.27 2.4357
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 20,500 -8,950 -30.39 9,358 -99.93 2.0912
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 29,450 22,240 308.46 13,908,352 402,340.74 3.3107
2022-08-11 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 7,210 7,210 3,456 0.9845
2021-05-06 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -14,700 -100.00 0 -100.00
2021-02-05 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 14,700 14,700 5,539 0.9056
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.