Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
CENA AKCJI
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionWebster Bank, N. A.
Latest Disclosed Ownership11,618 shares
Latest Disclosed Value $ 11,576,524
Webster Bank, N. A. reports 0.31% decrease in ownership of CTO / Costco Wholesale Corporation

On April 17, 2026 - Webster Bank, N. A. filed a 13F-HR form disclosing ownership of 11,618 shares of Costco Wholesale Corporation (DE:CTO) valued at $10,094,880 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 11,654 shares of Costco Wholesale Corporation. This represents a change in shares of -0.31% during the quarter. The current value of the position is $9,793,974 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)
2026-04-17 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 11,618 -36 -0.31 11,577 15.20 1.0508
2026-01-23 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 11,654 -677 -5.49 10,050 -11.95 0.9427
2025-10-23 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 12,331 -186 -1.49 11,414 -7.89 1.0977
2025-07-08 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 12,517 -141 -1.11 12,391 3.51 1.2799
2025-04-04 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 12,658 -77 -0.60 11,972 2.60 1.3157
2025-01-22 2024-12-31 13F Costco Wholesale COM 22160K105 12,735 -319 -2.44 11,669 0.83 1.2534
2024-10-10 2024-09-30 13F Costco Wholesale COM 22160K105 13,054 -839 -6.04 11,573 -2.00 1.2311
2024-07-12 2024-06-30 13F Costco Wholesale COM 22160K105 13,893 110 0.80 11,809 16.95 1.2945
2024-04-16 2024-03-31 13F Costco Wholesale COM 22160K105 13,783 -356 -2.52 10,098 8.20 1.1283
2024-01-23 2023-12-31 13F Costco Wholesale COM 22160K105 14,139 118 0.84 9,333 17.81 1.1428
2023-10-10 2023-09-30 13F Costco Wholesale COM 22160K105 14,021 -100 -0.71 7,921 4.20 1.0714
2023-07-13 2023-06-30 13F Costco Wholesale COM 22160K105 14,121 10 0.07 7,602 8.43 0.9825
2023-04-13 2023-03-31 13F Costco Wholesale COM 22160K105 14,111 -580 -3.95 7,011 116,750.00 0.9139
2023-01-18 2022-12-31 13F Costco Wholesale COM 22160K105 14,691 -310 -2.07 7 -99.92 0.9065
2022-10-24 2022-09-30 13F Costco Wholesale COM 22160K105 15,001 -58 -0.39 7,084 -1.84 1.0267
2022-07-12 2022-06-30 13F Costco Wholesale COM 22160K105 15,059 -13,109 -46.54 7,217 -55.51 0.9849
2022-04-13 2022-03-31 13F Costco Wholesale COM 22160K105 28,168 12,540 80.24 16,220 82.82 1.1639
2022-01-12 2021-12-31 13F Costco Wholesale COM 22160K105 15,628 -974 -5.87 8,872 18.93 0.9187
2021-10-12 2021-09-30 13F Costco Wholesale COM 22160K105 16,602 -554 -3.23 7,460 9.90 0.8331
2021-07-20 2021-06-30 13F Costco Wholesale COM 22160K105 17,156 -297 -1.70 6,788 10.34 0.7428
2021-05-07 2021-03-31 13F Costco Wholesale COM 22160K105 17,453 -188 -1.07 6,152 -7.43 0.7007
2021-01-07 2020-12-31 13F Costco Wholesale COM 22160K105 17,641 -259 -1.45 6,646 4.58 0.7811
2020-10-22 2020-09-30 13F Costco Wholesale COM 22160K105 17,900 -417 -2.28 6,355 14.42 0.8342
2020-07-09 2020-06-30 13F Costco Wholesale COM 22160K105 18,317 109 0.60 5,554 6.97 0.7875
2020-04-21 2020-03-31 13F Costco Wholesale COM 22160K105 18,208 -29 -0.16 5,192 -3.15 0.8629
2020-01-14 2019-12-31 13F Costco Wholesale COM 22160K105 18,237 -651 -3.45 5,361 -1.49 0.6849
2019-10-01 2019-09-30 13F Costco Wholesale COM 22160K105 18,888 -752 -3.83 5,442 4.86 0.7367
2019-07-11 2019-06-30 13F Costco Wholesale COM 22160K105 19,640 -332 -1.66 5,190 7.32 0.7146
2019-04-10 2019-03-31 13F Costco Wholesale COM 22160K105 19,972 -585 -2.85 4,836 15.50 0.6913
2019-01-09 2018-12-31 13F Costco Wholesale COM 22160K105 20,557 191 0.94 4,187 -12.48 0.6761
2018-10-12 2018-09-30 13F Costco Wholesale COM 22160K105 20,366 -325 -1.57 4,784 10.64 0.6666
2018-07-12 2018-06-30 13F Costco Wholesale COM 22160K105 20,691 -350 -1.66 4,324 9.08 0.6247
2018-04-19 2018-03-31 13F Costco Wholesale COM 22160K105 21,041 761 3.75 3,964 5.01 0.5723
2018-01-23 2017-12-31 13F Costco Wholesale COM 22160K105 20,280 -695 -3.31 3,775 9.55 0.5192
2017-10-12 2017-09-30 13F Costco Wholesale COM 22160K105 20,975 780 3.86 3,446 6.72 0.5008
2017-07-12 2017-06-30 13F Costco Wholesale COM 22160K105 20,195 -542 -2.61 3,229 -7.13 0.4779
2017-05-01 2017-03-31 13F Costco Wholesale COM 22160K105 20,737 131 0.64 3,477 5.40 0.5243
2017-02-15 2016-12-31 13F Costco Wholesale COM 22160K105 20,606 117 0.57 3,299 5.57 0.4823
2016-10-14 2016-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 20,489 1,008 5.17 3,125 2.16 0.4547
2016-07-11 2016-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 19,481 17,796 1,056.14 3,059 1,050.00 0.4485
2016-04-12 2016-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,685 0 0.00 266 -2.21 0.0415
2016-01-13 2015-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,685 0 0.00 272 11.48 0.0436
2015-11-12 2015-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,685 0 0.00 244 7.02 0.0450
2015-07-09 2015-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,685 -200 -10.61 228 -20.00 0.0382
2015-04-30 2015-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,885 0 0.00 285 6.74 0.0471
2015-01-15 2014-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 1,885 -150 -7.37 267 4.71 0.0448
2014-10-15 2014-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 2,035 0 0.00 255 8.97 0.0451
2014-07-09 2014-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 2,035 -690 -25.32 234 -23.03 0.0404
2014-04-11 2014-03-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 2,725 -100 -3.54 304 -9.79 0.0420
2014-01-28 2013-12-31 13F COSTCO WHSL CORP COMMON STOCK 22160K105 2,825 -10 -0.35 337 3.06 0.0472
2013-11-05 2013-09-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 2,835 137 5.08 327 9.36 0.0503
2013-08-06 2013-06-30 13F COSTCO WHSL CORP COMMON STOCK 22160K105 2,698 2,698 299 0.0377
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.