Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionAde, Llc
Latest Disclosed Ownership589 shares
Latest Disclosed Value $ 586,897
Ade, Llc ownership in COST / Costco Wholesale Corporation

On May 14, 2026 - Ade, Llc filed a 13F-HR form disclosing ownership of 589 shares of Costco Wholesale Corporation (US:COST) valued at $586,897 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 589 shares of Costco Wholesale Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $566,518 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 589 0 0.00 587 15.58 0.2813
2026-02-10 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 589 0 0.00 508 -6.97 0.2460
2025-11-07 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 589 589 545 0.2756
2024-04-18 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -915 -100.00 0 -100.00
2024-01-31 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 915 -30 -3.17 604 13.13 0.4186
2023-11-06 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 945 0 0.00 534 4.92 0.4030
2023-07-20 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 945 0 0.00 509 8.32 0.3550
2023-04-14 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 945 0 0.00 470 8.82 0.3366
2023-01-30 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 945 -40 -4.06 431 -7.31 0.3284
2022-10-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 985 0 0.00 465 -1.48 0.5215
2022-07-13 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 985 0 0.00 472 -16.75 0.5018
2022-04-22 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 985 0 0.00 567 1.43 0.5331
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 985 985 559 0.4761
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.