Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
DEL PRIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionMackenzie Financial Corp
Latest Disclosed Ownership244,552 shares
Latest Disclosed Value $ 243,678,949
Mackenzie Financial Corp reports 9.54% increase in ownership of CTO / Costco Wholesale Corporation

On May 13, 2026 - Mackenzie Financial Corp filed a 13F-HR form disclosing ownership of 244,552 shares of Costco Wholesale Corporation (DE:CTO) valued at $212,491,233 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 18, 2026 disclosing 223,248 shares of Costco Wholesale Corporation. This represents a change in shares of 9.54% during the quarter. The current value of the position is $206,157,336 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)
2026-05-13 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 244,552 21,304 9.54 243,679 26.34 0.2924
2026-02-18 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 223,248 51,037 29.64 192,874 21.00 0.2284
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 172,211 5,813 3.49 159,404 -3.23 0.1931
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 166,398 3,823 2.35 164,724 7.13 0.2134
2025-05-07 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 162,575 -9,684 -5.62 153,760 -2.58 0.2186
2025-05-02 2024-12-31 13F/A-2 COSTCO WHSL CORP COM 22160K105 172,259 -7,510 -4.18 157,836 -0.96 0.2151
2025-02-20 2024-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 172,259 -7,510 157,836 0.2051
2025-02-14 2024-12-31 13F Costco Wholesale Common Stock 22160K105 172,259 -7,510 161,617 0.2320
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 179,769 -68,663 -27.64 159,369 -24.53 0.2218
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 248,432 -57,026 -18.67 211,165 -5.64 0.3138
2024-05-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 305,458 -41,790 -12.03 223,788 -2.37 0.3225
2024-01-30 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 347,248 -59,163 -14.56 229,211 -0.19 0.3457
2023-10-25 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 406,411 -222,763 -35.41 229,638 -32.54 0.3861
2023-08-03 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 629,174 35,474 5.98 340,408 15.40 0.5164
2023-04-24 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 593,700 164,745 38.41 294,992 50.65 0.4557
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 428,955 5,689 1.34 195,818 -2.04 0.3271
2022-10-07 2022-09-30 13F Costco Wholesale Common Stock 22160K105 423,266 -8,590 -1.99 199,896 -3.42 0.3438
2022-08-10 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 431,856 -49,474 -10.28 206,980 -25.32 0.3315
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 481,330 70,073 17.04 277,174 18.72 0.3716
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 411,257 -199,462 -32.66 233,471 -14.92 0.3146
2021-11-08 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 610,719 -1,955 -0.32 274,427 13.20 0.3892
2021-08-11 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 612,674 -77,914 -11.28 242,417 -0.41 0.3371
2021-05-14 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 690,588 147,130 27.07 243,418 18.88 0.3710
2021-02-10 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 543,458 -98,582 -15.35 204,764 -10.16 0.4422
2020-11-13 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 642,040 -27,708 -4.14 227,924 12.24 0.5662
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 669,748 -114,669 -14.62 203,074 -9.20 0.5435
2020-05-14 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 784,417 34,480 4.60 223,661 1.47 0.7192
2020-02-13 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 749,937 -27,514 -3.54 220,421 -1.59 0.5422
2019-11-14 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 777,451 11,970 1.56 223,991 10.73 0.5887
2019-08-23 2019-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 765,481 -3,530 -0.46 202,286 8.63 0.5219
2019-08-14 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 765,481 -3,530 202,286
2019-05-15 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 769,011 -85,924 -10.05 186,208 6.92 0.4493
2019-02-06 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 854,935 -205,458 -19.38 174,159 -30.07 0.4578
2018-11-15 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 1,060,393 -138,211 -11.53 249,065 -0.57 0.6060
2018-08-13 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 1,198,604 52,890 4.62 250,484 16.03 0.6391
2018-05-14 2018-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 1,145,714 46,811 4.26 215,887 5.55 0.5503
2018-05-14 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 1,145,714 215,887
2018-02-13 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 1,098,903 -9,849 -0.89 204,528 12.28 0.4937
2017-11-13 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 1,108,752 307,988 38.46 182,157 42.24 0.9823
2017-08-14 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 800,764 -29,477 -3.55 128,066 -8.01 0.7129
2017-05-25 2017-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 830,241 4,200 0.51 139,223 5.27 0.8142
2017-05-12 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 830,241 139,223
2017-02-14 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 826,041 40,524 5.16 132,257 10.40 0.7922
2016-11-15 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 785,517 -42,572 -5.14 119,799 -7.88 0.7480
2016-08-12 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 828,089 55,444 7.18 130,043 6.81 0.7346
2016-05-12 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 772,645 -25,364 -3.18 121,753 -5.53 1.1044
2016-02-12 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 798,009 19,161 2.46 128,878 14.46 0.7998
2015-11-13 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 778,848 8,633 1.12 112,598 8.24 0.6832
2015-08-13 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 770,215 18,825 2.51 104,025 -8.61 0.5640
2015-05-13 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 751,390 -197,509 -20.81 113,828 -15.37 0.6000
2015-02-11 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 948,899 -474,935 -33.36 134,506 -24.62 0.6863
2014-11-12 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 1,423,834 282,692 24.77 178,435 35.78 0.8946
2014-08-11 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 1,141,142 245,801 27.45 131,414 31.42 0.6113
2014-05-14 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 895,341 21,280 2.43 99,992 -3.88 0.4902
2014-02-11 2013-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 874,061 -138,855 -13.71 104,031 -10.82 0.5257
2014-02-03 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 874,061 104,031
2013-11-12 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 1,012,916 13,000 1.30 116,658 5.51 0.5905
2013-08-20 2013-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 999,916 999,916 110,561 0.5272
2013-08-09 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 999,916 110,561 0.5290
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.