코스트코 도매공사
DE ˙ XTRA ˙ US22160K1051
€843.00 ↑27.00 (3.31%)
2026-06-04
주가
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionRiverstone Advisors, LLC
Latest Disclosed Ownership741 shares
Latest Disclosed Value $ 738,355
Riverstone Advisors, LLC reports 4.37% increase in ownership of CTO / Costco Wholesale Corporation

On April 21, 2026 - Riverstone Advisors, LLC filed a 13F-HR form disclosing ownership of 741 shares of Costco Wholesale Corporation (DE:CTO) valued at $643,855 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 710 shares of Costco Wholesale Corporation. This represents a change in shares of 4.37% during the quarter. The current value of the position is $624,663 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)
2026-04-21 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 741 31 4.37 738 20.59 0.3641
2026-02-02 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 710 -22 -3.01 612 -9.60 0.2885
2025-11-07 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 732 6 0.83 678 -5.71 0.3323
2025-08-12 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 726 2 0.28 719 4.97 0.3885
2025-04-25 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 724 35 5.08 685 8.40 0.4118
2025-01-24 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 689 176 34.31 631 38.99 0.3597
2024-11-04 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 513 70 15.80 455 20.74 0.2645
2024-07-22 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 443 114 34.65 377 56.02 0.2314
2024-05-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 329 16 5.11 241 16.99 0.1437
2024-01-30 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 313 313 207 0.1337
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.