Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
CENA AKCJI
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionFairfield, Bush & Co.
Latest Disclosed Ownership468 shares
Latest Disclosed Value $ 466,492
Fairfield, Bush & Co. reports 38.46% increase in ownership of CTO / Costco Wholesale Corporation

On May 12, 2026 - Fairfield, Bush & Co. filed a 13F-HR form disclosing ownership of 468 shares of Costco Wholesale Corporation (DE:CTO) valued at $406,645 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 338 shares of Costco Wholesale Corporation. This represents a change in shares of 38.46% during the quarter. The current value of the position is $394,524 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)
2026-05-12 2026-03-31 13F COSTCO WHOLESALE CORPORATION COM Stock 22160K105 468 130 38.46 466 60.14 0.2590
2026-02-13 2025-12-31 13F COSTCO WHOLESALE CORPORATION COM Stock 22160K105 338 -46 -11.98 292 -18.03 0.1538
2025-11-14 2025-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 384 40 11.63 356 4.41 0.1826
2025-08-15 2025-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 344 62 21.99 341 27.82 0.1926
2025-05-13 2025-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 282 -15 -5.05 267 -2.21 0.1693
2025-02-13 2024-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 297 0 0.00 272 3.42 0.1601
2024-11-12 2024-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 297 10 3.48 263 7.79 0.1567
2024-08-15 2024-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 287 -25 -8.01 244 7.02 0.1462
2024-05-15 2024-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 312 -10 -3.11 229 7.55 0.1356
2024-02-13 2023-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 322 -61 -15.93 213 -1.85 0.1247
2023-11-15 2023-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 383 0 0.00 216 4.85 0.1414
2023-08-15 2023-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 383 -30 -7.26 206 0.49 0.0568
2023-05-15 2023-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 413 413 205 0.0723
2023-02-14 2022-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 0 -433 -100.00 0 -100.00
2022-11-07 2022-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 433 0 0.00 205 -1.44 0.1447
2022-08-09 2022-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 433 0 0.00 208 -16.47 0.1223
2022-05-12 2022-03-31 13F/A-1 COSTCO WHSL CORP NEW COM Stock 22160K105 433 -50 -10.35 249 -9.12 0.1249
2022-05-06 2022-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 433 -50 249 0.1173
2022-05-12 2021-12-31 13F/A-1 COSTCO WHSL CORP NEW COM Stock 22160K105 483 -66 -12.02 274 10.93 0.1317
2022-02-09 2021-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 483 -66 274 0.1309
2021-11-08 2021-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 549 549 247 0.0802
2014-02-14 2013-12-31 13F Costco Wholesale COM 22160K105 0 -600 -100.00 0 -100.00
2013-11-13 2013-09-30 13F/A-1 Costco Wholesale COM 22160K105 600 50 9.09 69 13.11 0.0209
2013-11-13 2013-09-30 13F Costco Wholesale COM 22160K105 600 69
2013-08-15 2013-06-30 13F/A-1 Costco Wholesale COM 22160K105 550 550 61 0.0311
2013-08-15 2013-06-30 13F Costco Wholesale COM 22160K105 550 60,814
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.