Costco Wholesale Corporation
IT ˙ BIT ˙ US22160K1051
836,20 € ↑12,80 (1,55%)
2026-06-04
PREZZO DELLE AZIONI
SecurityIT:1COST / Costco Wholesale Corporation
InstitutionWaldron Private Wealth LLC
Latest Disclosed Ownership1,349 shares
Latest Disclosed Value $ 1,344,183
Waldron Private Wealth LLC reports 3.61% increase in ownership of 1COST / Costco Wholesale Corporation

On April 10, 2026 - Waldron Private Wealth LLC filed a 13F-HR form disclosing ownership of 1,349 shares of Costco Wholesale Corporation (IT:1COST) valued at $1,212,616 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 1,302 shares of Costco Wholesale Corporation. This represents a change in shares of 3.61% during the quarter. The current value of the position is $1,128,034 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)
2026-04-10 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 1,349 47 3.61 1,344 19.79 0.0524
2026-01-14 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 1,302 -71 -5.17 1,123 -11.65 0.0444
2025-10-30 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 1,373 -56 -3.92 1,271 -10.18 0.0515
2025-07-31 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 1,429 -35 -2.39 1,415 2.17 0.0617
2025-05-08 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 1,464 -2,212 -60.17 1,385 -58.91 0.0654
2025-01-24 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 3,676 643 21.20 3,368 25.30 0.1356
2024-10-21 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 3,033 53 1.78 2,689 6.16 0.1117
2024-07-31 2024-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,980 14 0.47 2,533 16.57 0.1133
2024-05-09 2024-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,966 -282 -8.68 2,173 -0.73 0.0981
2024-08-29 2023-12-31 13F/A-1 COSTCO WHSL CORP NEW COM COM 22160K105 3,248 684 26.68 2,188 51.10 0.1041
2024-01-30 2023-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 3,248 684 2 0.1041
2024-08-29 2023-09-30 13F/A-1 COSTCO WHSL CORP NEW COM COM 22160K105 2,564 -104 -3.90 1,449 0.84 0.0752
2023-10-26 2023-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,564 -104 1 0.0752
2024-08-29 2023-06-30 13F/A-1 COSTCO WHSL CORP NEW COM COM 22160K105 2,668 -171 -6.02 1,436 1.84 0.0717
2023-08-07 2023-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,668 -171 1 0.0717
2024-08-29 2023-03-31 13F/A-1 COSTCO WHSL CORP NEW COM COM 22160K105 2,839 -64 -2.20 1,411 140,900.00 0.0686
2023-05-02 2023-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,839 -64 1 0.0686
2023-02-08 2022-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,903 0 0.00 1 -99.93 0.0852
2022-11-14 2022-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,903 -5 -0.17 1,371 -1.58 0.0852
2022-08-03 2022-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,908 771 36.08 1,393 13.25 0.0781
2022-05-04 2022-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,137 207 10.73 1,230 12.33 0.0631
2022-02-02 2021-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,930 18 0.94 1,095 27.47 0.0540
2021-11-02 2021-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,912 291 17.95 859 34.01 0.0500
2021-08-06 2021-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,621 -137 -7.79 641 3.55 0.0410
2021-05-11 2021-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,758 -6 -0.34 619 -6.78 0.0430
2021-02-12 2020-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,764 -472 -21.11 664 -16.27 0.0494
2020-11-13 2020-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,236 230 11.47 793 30.43 0.0678
2020-08-11 2020-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 2,006 484 31.80 608 40.42 0.0537
2020-05-05 2020-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,522 25 1.67 433 -1.37 0.0461
2020-02-07 2019-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,497 72 5.05 439 7.07 0.0391
2019-11-06 2019-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,425 427 42.79 410 55.89 0.0418
2019-07-31 2019-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 998 -220 -18.06 263 -10.85 0.0280
2019-05-01 2019-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,218 215 21.44 295 44.61 0.0332
2019-02-13 2018-12-31 13F Costco Wholesale COM 22160K105 1,003 1,003 204 0.0294
2017-08-14 2017-06-30 13F Costco Wholesale COM 22160K105 0 -1,336 -100.00 0 -100.00
2017-05-18 2017-03-31 13F/A-2 Costco Wholesale COM 22160K105 1,336 1,336 223 0.0359
2017-04-27 2017-03-31 13F/A-1 Costco Wholesale COM 22160K105 1,336 0 223 0.0333
2017-04-24 2017-03-31 13F Costco Wholesale COM 22160K105 1,336 223
2015-08-12 2015-06-30 13F Costco Wholesale COM 22160K105 0 -1,938 -100.00 0 -100.00
2015-05-04 2015-03-31 13F Costco Wholesale COM 22160K105 1,938 1,938 294 0.1196
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.