Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
€ 843,00 ↑27.00 (3.31%)
2026-06-04
PREÇO DA AÇÃO
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionTranquility Partners, LLC
Latest Disclosed Ownership6,487 shares
Latest Disclosed Value $ 6,463,418
Tranquility Partners, LLC reports 3.52% decrease in ownership of CTO / Costco Wholesale Corporation

On April 20, 2026 - Tranquility Partners, LLC filed a 13F-HR form disclosing ownership of 6,487 shares of Costco Wholesale Corporation (DE:CTO) valued at $5,636,554 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 6,724 shares of Costco Wholesale Corporation. This represents a change in shares of -3.52% during the quarter. The current value of the position is $5,468,541 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)
2026-04-20 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 6,487 -237 -3.52 6,463 11.47 2.4382
2026-02-03 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 6,724 -195 -2.82 5,799 -9.46 2.0888
2025-10-30 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 6,919 -182 -2.56 6,404 -8.89 2.1624
2025-07-25 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 7,101 -34 -0.48 7,029 4.16 2.5104
2025-04-24 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 7,135 86 1.22 6,748 4.25 2.6061
2025-01-29 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 7,049 -158 -2.19 6,473 1.33 2.4345
2024-11-07 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 7,207 -72 -0.99 6,389 3.25 2.3164
2024-07-25 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 7,279 -69 -0.94 6,187 14.94 2.3804
2024-05-07 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 7,348 221 3.10 5,384 14.43 2.0807
2024-01-31 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 7,127 -553 -7.20 4,705 8.41 1.9724
2023-10-31 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 7,680 567 7.97 4,339 13.32 1.8600
2023-07-17 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 7,113 -26 -0.36 3,830 7.98 1.6497
2023-05-08 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 7,139 -35 -0.49 3,547 8.31 1.6898
2023-02-02 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 7,174 246 3.55 3,275 0.06 1.6658
2022-11-01 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 6,928 -91 -1.30 3,272 -2.73 1.8208
2022-08-01 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 7,019 640 10.03 3,364 -8.41 1.7402
2022-04-29 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 6,379 145 2.33 3,673 3.79 1.7198
2022-01-31 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 6,234 60 0.97 3,539 27.58 1.6378
2021-10-20 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 6,174 225 3.78 2,774 17.84 1.4077
2021-07-23 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 5,949 -444 -6.95 2,354 4.48 1.3226
2021-04-30 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 6,393 824 14.80 2,253 7.39 1.4012
2021-01-29 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 5,569 466 9.13 2,098 15.85 1.4823
2020-11-10 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 5,103 -320 -5.90 1,811 10.16 1.5387
2020-07-29 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 5,423 32 0.59 1,644 6.96 1.5480
2020-04-20 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 5,391 -542 -9.14 1,537 -11.87 1.7690
2020-02-03 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 5,933 -12 -0.20 1,744 1.81 1.5745
2019-11-14 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 5,945 177 3.07 1,713 12.40 1.8155
2019-08-13 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 5,768 5,768 1,524 1.6428
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.