Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionCIBC Asset Management Inc
Latest Disclosed Ownership208,776 shares
Latest Disclosed Value $ 207,992,260
CIBC Asset Management Inc reports 0.91% increase in ownership of COST / Costco Wholesale Corporation

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 208,776 shares of Costco Wholesale Corporation (MX:COST) valued at $207,992,260 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 206,884 shares of Costco Wholesale Corporation. This represents a change in shares of 0.91% during the quarter.

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 COM 22160K105 208,776 1,892 0.91 207,992 16.61 0.5083
2026-02-10 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 206,884 52,696 34.18 178,374 25.01 0.4306
2025-10-31 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 154,188 -58 -0.04 142,687 -6.53 0.4131
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 154,246 -7,501 -4.64 152,660 -0.18 0.4721
2025-05-13 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 161,747 346 0.21 152,937 3.44 0.5076
2025-01-31 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 161,401 -23,655 -12.78 147,852 -9.83 0.4845
2024-11-06 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 185,056 6,963 3.91 163,968 8.32 0.5319
2024-08-01 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 178,093 -1,799 -1.00 151,377 14.86 0.5387
2024-05-09 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 179,892 1,808 1.02 131,794 12.12 0.4570
2024-02-13 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 178,084 -14,150 -7.36 117,550 8.24 0.4391
2023-10-30 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 192,234 9,044 4.94 108,605 10.12 0.4503
2023-08-14 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 183,190 -7,409 -3.89 98,626 4.14 0.3782
2023-05-12 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 190,599 -13,044 -6.41 94,703 1.87 0.3756
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 203,643 4,695 2.36 92,963 -1.06 0.3903
2022-11-03 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 198,948 12,750 6.85 93,957 5.28 0.4122
2022-08-09 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 186,198 64,083 52.48 89,241 26.91 0.3618
2022-05-06 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 122,115 1,728 1.44 70,320 2.89 0.2469
2022-02-08 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 120,387 7,976 7.10 68,344 35.31 0.2502
2021-11-09 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 112,411 1,882 1.70 50,511 15.50 0.2035
2021-08-16 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 110,529 4,427 4.17 43,733 16.94 0.1768
2021-05-14 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 106,102 12,599 13.47 37,399 6.16 0.1591
2021-02-03 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 93,503 550 0.59 35,230 6.76 0.1657
2020-11-05 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 92,953 2,400 2.65 32,998 20.18 0.1683
2020-07-28 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 90,553 14,907 19.71 27,457 27.30 0.1610
2020-04-30 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 75,646 2,386 3.26 21,569 0.17 0.1526
2020-02-14 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 73,260 2,646 3.75 21,533 5.84 0.1217
2019-10-30 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 70,614 1,038 1.49 20,345 10.65 0.1195
2019-08-05 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 69,576 1,422 2.09 18,386 11.41 0.1100
2019-05-06 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 68,154 8,021 13.34 16,503 34.72 0.1023
2019-02-12 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 60,133 -2,655 -4.23 12,250 -16.94 0.0900
2018-11-02 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 62,788 1,365 2.22 14,748 14.90 0.0912
2018-08-09 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 61,423 2,837 4.84 12,836 16.28 0.0801
2018-04-30 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 58,586 -659 -1.11 11,039 0.11 0.0717
2018-02-02 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 59,245 783 1.34 11,027 14.80 0.0675
2017-11-06 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 58,462 805 1.40 9,605 4.16 0.0601
2017-07-27 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 57,657 1,844 3.30 9,221 -1.47 0.0637
2017-05-12 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 55,813 941 1.71 9,359 6.52 0.0643
2017-02-08 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 54,872 382 0.70 8,786 5.73 0.0632
2016-10-19 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 54,490 -9,417 -14.74 8,310 -17.20 0.0612
2016-08-02 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 63,907 -6,024 -8.61 10,036 -8.93 0.0755
2016-05-09 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 69,931 1,944 2.86 11,020 0.36 0.0825
2016-02-02 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 67,987 15,169 28.72 10,980 43.79 0.0904
2015-11-03 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 52,818 523 1.00 7,636 8.11 0.0610
2015-08-06 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 52,295 2,868 5.80 7,063 -5.68 0.0491
2015-05-08 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 49,427 4,088 9.02 7,488 16.51 0.0531
2015-02-10 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 45,339 -9,852 -17.85 6,427 -7.08 0.0429
2014-11-05 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 55,191 -62,787 -53.22 6,917 -49.09 0.0413
2014-08-01 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 117,978 -2,647 -2.19 13,586 0.85 0.0770
2014-05-09 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 120,625 -1,856 -1.52 13,471 -7.59 0.0795
2014-02-04 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 122,481 14,798 13.74 14,578 17.55 0.0893
2013-10-29 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 107,683 1,096 1.03 12,402 5.24 0.0792
2013-10-02 2013-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 106,587 106,587 11,785 0.0804
2013-08-09 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 106,587 11,785 0.0804
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.