Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
DEL PRIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionRDA Financial Network
Latest Disclosed Ownership4,487 shares
Latest Disclosed Value $ 4,471,148
RDA Financial Network reports 0.42% decrease in ownership of CTO / Costco Wholesale Corporation

On April 8, 2026 - RDA Financial Network filed a 13F-HR form disclosing ownership of 4,487 shares of Costco Wholesale Corporation (DE:CTO) valued at $3,898,754 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 6, 2026 disclosing 4,506 shares of Costco Wholesale Corporation. This represents a change in shares of -0.42% during the quarter. The current value of the position is $3,782,541 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)
2026-04-08 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 4,487 -19 -0.42 4,471 15.08 1.1188
2026-01-06 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 4,506 14 0.31 3,886 -6.54 0.9356
2025-10-08 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 4,492 301 7.18 4,158 0.22 1.0255
2025-07-07 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 4,191 -70 -1.64 4,149 2.93 1.1208
2025-04-14 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 4,261 249 6.21 4,030 9.63 1.2017
2025-01-15 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 4,012 607 17.83 3,676 21.80 1.0718
2024-10-15 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 3,405 79 2.38 3,018 6.76 0.9363
2024-07-10 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 3,326 193 6.16 2,827 23.18 0.9264
2024-04-11 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 3,133 332 11.85 2,295 24.19 0.7865
2024-01-12 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 2,801 240 9.37 1,849 27.71 0.7005
2023-10-18 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 2,561 310 13.77 1,447 19.39 0.6264
2023-07-13 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 2,251 1,827 430.90 1,212 477.14 0.5097
2023-04-12 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 424 424 211 0.0962
2022-01-31 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -509 -100.00 0 -100.00
2021-10-29 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 509 -81 -13.73 229 -1.72 0.1009
2021-07-13 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 590 -117 -16.55 233 -6.43 0.1029
2021-05-06 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 707 118 20.03 249 12.16 0.1068
2021-02-05 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 589 589 222 0.1001
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.