Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
CENA AKCJI
SecurityDE:CTO / Costco Wholesale Corporation
Institution1st Source Bank
Latest Disclosed Ownership11,360 shares
Latest Disclosed Value $ 11,319,444
1st Source Bank reports 1.35% decrease in ownership of CTO / Costco Wholesale Corporation

On May 4, 2026 - 1st Source Bank filed a 13F-HR form disclosing ownership of 11,360 shares of Costco Wholesale Corporation (DE:CTO) valued at $9,870,704 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 11,515 shares of Costco Wholesale Corporation. This represents a change in shares of -1.35% during the quarter. The current value of the position is $9,576,480 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)
2026-05-04 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 11,360 -155 -1.35 11,319 14.00 0.5840
2026-02-05 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 11,515 -136 -1.17 9,930 -7.93 0.5209
2025-11-12 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 11,651 25 0.22 10,785 -6.30 0.5685
2025-08-07 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 11,626 -332 -2.78 11,509 1.77 0.6347
2025-05-05 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 11,958 12 0.10 11,310 3.33 0.6664
2025-02-10 2024-12-31 13F Costco Wholesale COM 22160K105 11,946 -238 -1.95 10,946 1.33 0.6261
2024-12-11 2024-09-30 13F Costco Wholesale COM 22160K105 12,184 -20 -0.16 10,801 4.13 0.6097
2024-08-08 2024-06-30 13F COSTCO WHOLESALE COM 22160K105 12,204 -223 -1.79 10,373 13.94 0.6065
2024-05-09 2024-03-31 13F COSTCO WHOLESALE COM 22160K105 12,427 -21 -0.17 9,104 10.81 0.5292
2024-02-08 2023-12-31 13F COSTCO WHOLESALE COM 22160K105 12,448 -101 -0.80 8,217 15.90 0.4964
2023-11-09 2023-09-30 13F COSTCO WHOLESALE COM 22160K105 12,549 -154 -1.21 7,090 3.66 0.4827
2023-08-09 2023-06-30 13F COSTCO WHOLESALE COM 22160K105 12,703 -178 -1.38 6,839 6.86 0.4415
2023-05-09 2023-03-31 13F COSTCO WHOLESALE COM 22160K105 12,881 -254 -1.93 6,400 6.74 0.4254
2023-02-13 2022-12-31 13F COSTCO WHOLESALE COM 22160K105 13,135 368 2.88 5,996 -0.56 0.3935
2022-11-04 2022-09-30 13F COSTCO WHOLESALE COM 22160K105 12,767 173 1.37 6,030 -0.10 0.4386
2022-08-05 2022-06-30 13F COSTCO WHOLESALE COM 22160K105 12,594 -43 -0.34 6,036 -17.05 0.4263
2022-05-05 2022-03-31 13F COSTCO WHOLESALE COM 22160K105 12,637 33 0.26 7,277 1.71 0.4472
2022-02-09 2021-12-31 13F COSTCO WHOLESALE COM 22160K105 12,604 -20 -0.16 7,155 26.15 0.4186
2021-11-05 2021-09-30 13F COSTCO WHOLESALE COM 22160K105 12,624 65 0.52 5,672 14.15 0.3573
2021-08-03 2021-06-30 13F COSTCO WHOLESALE COM 22160K105 12,559 163 1.31 4,969 13.73 0.3132
2021-05-07 2021-03-31 13F COSTCO WHOLESALE COM 22160K105 12,396 682 5.82 4,369 -1.00 0.2890
2021-02-05 2020-12-31 13F COSTCO WHOLESALE COM 22160K105 11,714 168 1.46 4,413 7.66 0.3216
2020-10-30 2020-09-30 13F COSTCO WHOLESALE COM 22160K105 11,546 -38 -0.33 4,099 16.71 0.3491
2020-08-07 2020-06-30 13F COSTCO WHOLESALE COM 22160K105 11,584 494 4.45 3,512 11.07 0.3020
2020-04-29 2020-03-31 13F COSTCO WHOLESALE COM 22160K105 11,090 1,333 13.66 3,162 10.25 0.3181
2020-01-27 2019-12-31 13F COSTCO WHOLESALE COM 22160K105 9,757 75 0.77 2,868 2.83 0.2149
2019-11-06 2019-09-30 13F COSTCO WHOLESALE COM 22160K105 9,682 -184 -1.86 2,789 6.98 0.2287
2019-07-29 2019-06-30 13F COSTCO WHOLESALE COM 22160K105 9,866 -29 -0.29 2,607 8.81 0.2131
2019-04-29 2019-03-31 13F COSTCO WHOLESALE COM 22160K105 9,895 2,028 25.78 2,396 49.56 0.2044
2019-02-11 2018-12-31 13F COSTCO WHOLESALE COM 22160K105 7,867 -216 -2.67 1,602 -15.64 0.1557
2018-10-31 2018-09-30 13F COSTCO WHOLESALE COM 22160K105 8,083 168 2.12 1,899 14.81 0.1506
2018-08-02 2018-06-30 13F COSTCO WHOLESALE COM 22160K105 7,915 373 4.95 1,654 16.40 0.1343
2018-04-24 2018-03-31 13F COSTCO WHOLESALE COM 22160K105 7,542 -187 -2.42 1,421 -1.18 0.1177
2018-02-13 2017-12-31 13F COSTCO WHOLESALE COM 22160K105 7,729 -168 -2.13 1,438 10.87 0.1183
2017-10-27 2017-09-30 13F COSTCO WHOLESALE COM 22160K105 7,897 269 3.53 1,297 6.31 0.1079
2017-07-26 2017-06-30 13F COSTCO WHOLESALE COM 22160K105 7,628 1,792 30.71 1,220 24.74 0.1051
2017-04-26 2017-03-31 13F COSTCO WHOLESALE COM 22160K105 5,836 93 1.62 978 6.30 0.0866
2017-02-09 2016-12-31 13F COSTCO WHOLESALE COM 22160K105 5,743 2,503 77.25 920 86.23 0.0874
2016-10-27 2016-09-30 13F COSTCO WHOLESALE COM 22160K105 3,240 -212 -6.14 494 -8.86 0.0522
2016-07-29 2016-06-30 13F COSTCO WHOLESALE COM 22160K105 3,452 274 8.62 542 8.18 0.0612
2016-04-26 2016-03-31 13F COSTCO WHOLESALE COM 22160K105 3,178 30 0.95 501 -1.57 0.0559
2016-01-29 2015-12-31 13F COSTCO WHOLESALE COM 22160K105 3,148 469 17.51 509 31.52 0.0591
2015-10-20 2015-09-30 13F COSTCO WHOLESALE COM 22160K105 2,679 272 11.30 387 18.71 0.0444
2015-08-04 2015-06-30 13F COSTCO WHOLESALE COM 22160K105 2,407 -1,194 -33.16 326 -40.18 0.0353
2015-04-27 2015-03-31 13F COSTCO WHOLESALE COM 22160K105 3,601 1,341 59.34 545 70.31 0.0653
2015-02-10 2014-12-31 13F COSTCO WHOLESALE COM 22160K105 2,260 -251 -10.00 320 1.59 0.0385
2014-10-30 2014-09-30 13F COSTCO WHOLESALE COM 22160K105 2,511 239 10.52 315 20.23 0.0418
2014-07-25 2014-06-30 13F COSTCO WHOLESALE COM 22160K105 2,272 -133 -5.53 262 -2.24 0.0338
2014-04-28 2014-03-31 13F COSTCO WHOLESALE COM 22160K105 2,405 322 15.46 268 8.06 0.0358
2014-02-13 2013-12-31 13F COSTCO WHOLESALE COM 22160K105 2,083 15 0.73 248 3.77 0.0333
2013-11-13 2013-09-30 13F COSTCO WHOLESALE COM 22160K105 2,068 123 6.32 239 11.16 0.0355
2013-08-08 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 1,945 1,945 215 0.0363
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.