Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionCourier Capital Llc
Latest Disclosed Ownership7,316 shares
Latest Disclosed Value $ 7,289,395
Courier Capital Llc reports 2.21% decrease in ownership of COST / Costco Wholesale Corporation

On April 23, 2026 - Courier Capital Llc filed a 13F-HR/A form disclosing ownership of 7,316 shares of Costco Wholesale Corporation (MX:COST) valued at $7,289,395 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 7,481 shares of Costco Wholesale Corporation. This represents a change in shares of -2.21% 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)
2026-04-23 2026-03-31 13F/A-1 COSTCO WHOLESALE COM 22160K105 7,316 -165 -2.21 7,289 13.01 0.4075
2026-04-20 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 7,316 -165 -2.21 7,289 13.01 0.4075
2026-01-29 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 7,481 -939 -11.15 6,451 -17.23 0.3622
2025-10-29 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 8,420 -15 -0.18 7,794 -6.67 0.4465
2025-07-28 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 8,435 -27 -0.32 8,351 4.34 0.5070
2025-04-14 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 8,462 180 2.17 8,004 5.46 0.5238
2025-01-13 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 8,282 522 6.73 7,589 10.32 0.5235
2024-10-22 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 7,760 -416 -5.09 6,880 -1.01 0.4714
2024-07-23 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 8,176 -105 -1.27 6,950 14.54 0.5522
2024-04-16 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 8,281 -280 -3.27 6,067 7.36 0.4389
2024-01-17 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 8,561 -7 -0.08 5,651 16.76 0.4290
2023-10-13 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 8,568 4 0.05 4,841 4.99 0.4013
2023-07-31 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 8,564 -314 -3.54 4,611 4.51 0.3631
2023-05-18 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 8,878 -74 -0.83 4,411 7.95 0.4874
2023-01-24 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 8,952 -37 -0.41 4,087 -3.75 0.4709
2022-10-18 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 8,989 16 0.18 4,245 -1.30 0.5259
2022-07-20 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 8,973 -25 -0.28 4,301 -17.00 0.5037
2022-05-02 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 8,998 -380 -4.05 5,182 -2.67 0.5181
2022-01-18 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 9,378 -266 -2.76 5,324 22.84 0.4951
2021-10-14 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 9,644 -140 -1.43 4,334 11.96 0.4124
2021-07-12 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 9,784 -607 -5.84 3,871 5.68 0.3682
2021-04-12 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 10,391 257 2.54 3,663 -4.06 0.3699
2021-02-10 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 10,134 -58 -0.57 3,818 -2.87 0.4142
2020-11-09 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 10,192 -125 -1.21 3,931 24.64 0.4708
2020-07-06 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 10,317 0 0.00 3,154 1.45 0.4059
2020-04-22 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 10,317 -12 -0.12 3,109 0.52 0.4613
2020-01-10 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 10,329 -87 -0.84 3,093 2.76 0.3629
2019-10-04 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 10,416 -68 -0.65 3,010 8.66 0.3919
2019-07-16 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 10,484 -350 -3.23 2,770 5.60 0.3543
2019-04-25 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 10,834 -65 -0.60 2,623 18.15 0.3410
2019-02-08 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 10,899 -397 -3.51 2,220 -16.32 0.3252
2018-10-12 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 11,296 -280 -2.42 2,653 9.67 0.3245
2018-07-19 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 11,576 0 0.00 2,419 10.91 0.3118
2018-04-27 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 11,576 -850 -6.84 2,181 -5.71 0.2875
2018-01-25 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 12,426 -1,030 -7.65 2,313 4.66 0.2970
2017-11-03 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 13,456 1,250 10.24 2,210 13.22 0.3090
2017-08-10 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 12,206 441 3.75 1,952 -1.06 0.3343
2017-04-19 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 11,765 -100 -0.84 1,973 3.84 0.3471
2017-01-31 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 11,865 320 2.77 1,900 7.89 0.3622
2016-11-15 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 11,545 -50 -0.43 1,761 -3.29 0.3486
2016-08-01 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 11,595 -485 -4.01 1,821 -4.36 0.3637
2016-05-16 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 12,080 -10 -0.08 1,904 -2.51 0.3965
2016-02-10 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 12,090 529 4.58 1,953 16.88 0.4197
2015-10-21 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 11,561 953 8.98 1,671 16.61 0.3681
2015-08-03 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 10,608 -326 -2.98 1,433 -13.47 0.2885
2015-04-28 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 10,934 200 1.86 1,656 8.80 0.3272
2015-01-22 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 10,734 50 0.47 1,522 13.67 0.3062
2014-11-04 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 10,684 618 6.14 1,339 15.53 0.2709
2014-08-06 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 10,066 -528 -4.98 1,159 -2.03 0.2291
2014-05-02 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 10,594 990 10.31 1,183 3.50 0.2438
2014-02-14 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 9,604 180 1.91 1,143 5.35 0.2436
2013-11-14 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 9,424 377 4.17 1,085 8.50 0.2491
2013-08-01 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 9,047 9,047 1,000 0.2491
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.