Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionApriem Advisors
Latest Disclosed Ownership3,052 shares
Latest Disclosed Value $ 3,041,318
Apriem Advisors reports 6.05% increase in ownership of COST / Costco Wholesale Corporation

On May 14, 2026 - Apriem Advisors filed a 13F-HR form disclosing ownership of 3,052 shares of Costco Wholesale Corporation (MX:COST) valued at $3,041,318 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,878 shares of Costco Wholesale Corporation. This represents a change in shares of 6.05% 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.

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)
2026-05-14 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 3,052 174 6.05 3,041 22.57 0.2902
2026-02-13 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 2,878 155 5.69 2,482 -1.55 0.2278
2025-11-10 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 2,723 54 2.02 2,521 -4.62 0.2385
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 2,669 94 3.65 2,642 8.50 0.2809
2025-05-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 2,575 117 4.76 2,435 8.13 0.2853
2025-02-05 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 2,458 65 2.72 2,253 6.18 0.2580
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 2,393 -1 -0.04 2,121 4.28 0.2478
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 2,394 -37 -1.52 2,035 14.27 0.2491
2024-05-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 2,431 -49 -1.98 1,781 8.80 0.2237
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 2,480 -40 -1.59 1,637 14.97 0.2187
2023-11-13 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 2,520 -70 -2.70 1,424 2.08 0.2086
2023-08-08 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 2,590 90 3.60 1,394 12.33 0.2091
2023-05-12 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 2,500 319 14.63 1,242 24.72 0.1987
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 2,181 -55 -2.46 995 -5.78 0.1725
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 2,236 8 0.36 1,056 -1.12 0.1904
2022-08-08 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 2,228 -264 -10.59 1,068 -25.57 0.1840
2022-05-10 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 2,492 20 0.81 1,435 2.21 0.2105
2022-02-09 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 2,472 -160 -6.08 1,404 18.68 0.1987
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 2,632 -139 -5.02 1,183 7.94 0.1697
2021-08-10 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 2,771 -298 -9.71 1,096 1.29 0.1635
2021-05-10 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 3,069 970 46.21 1,082 36.79 0.1676
2021-02-04 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 2,099 182 9.49 791 16.15 0.1410
2020-11-10 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 1,917 -135 -6.58 681 9.49 0.1250
2020-08-07 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 2,052 16 0.79 622 7.06 0.1278
2020-05-07 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 2,036 252 14.13 581 10.88 0.1408
2020-02-10 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 1,784 180 11.22 524 13.42 0.1005
2019-11-12 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 1,604 106 7.08 462 16.67 0.1024
2019-08-14 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 1,498 0 0.00 396 9.09 0.1240
2019-05-15 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 1,498 -190 -11.26 363 5.52 0.0961
2019-02-19 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 1,688 -4 -0.24 344 -13.35 0.1210
2018-11-14 2018-09-30 13F COSTCO WHOLESALE cs 22160K105 1,692 -300 -15.06 397 -4.57 0.0869
2018-08-14 2018-06-30 13F COSTCO WHOLESALE cs 22160K105 1,992 0 0.00 416 10.93 0.0935
2018-05-11 2018-03-31 13F COSTCO WHOLESALE cs 22160K105 1,992 -27 -1.34 375 -0.27 0.0915
2018-02-14 2017-12-31 13F COSTCO WHOLESALE cs 22160K105 2,019 -780 -27.87 376 -18.26 0.0932
2017-11-14 2017-09-30 13F COSTCO WHOLESALE cs 22160K105 2,799 596 27.05 460 30.68 0.1144
2017-08-04 2017-06-30 13F COSTCO WHOLESALE cs 22160K105 2,203 403 22.39 352 16.56 0.0933
2017-05-13 2017-03-31 13F COSTCO WHOLESALE cs 22160K105 1,800 174 10.70 302 16.15 0.0820
2017-02-14 2016-12-31 13F COSTCO WHOLESALE cs 22160K105 1,626 -129 -7.35 260 -2.99 0.0772
2016-11-14 2016-09-30 13F COSTCO WHOLESALE cs 22160K105 1,755 150 9.35 268 6.35 0.0799
2016-08-12 2016-06-30 13F COSTCO WHOLESALE cs 22160K105 1,605 25 1.58 252 1.20 0.0819
2016-05-13 2016-03-31 13F COSTCO WHOLESALE cs 22160K105 1,580 -100 -5.95 249 -8.12 0.0980
2016-02-09 2015-12-31 13F COSTCO WHOLESALE cs 22160K105 1,680 225 15.46 271 29.05 0.0966
2015-11-13 2015-09-30 13F COSTCO WHOLESALE cs 22160K105 1,455 1,027 239.95 210 262.07 0.0777
2015-08-14 2015-06-30 13F COSTCO WHOLESALE cs 22160K105 428 0 0.00 58 -10.77 0.0199
2015-05-07 2015-03-31 13F COSTCO WHSL CORP cs 22160K105 428 30 7.54 65 16.07 0.0225
2015-02-12 2014-12-31 13F COSTCO WHSL CORP cs 22160K105 398 0 0.00 56 12.00 0.0206
2014-11-10 2014-09-30 13F COSTCO WHSL CORP cs 22160K105 398 50 14.37 50 25.00 0.0191
2014-08-11 2014-06-30 13F COSTCO WHSL CORP cs 22160K105 348 0 0.00 40 2.56 0.0153
2014-05-13 2014-03-31 13F COSTCO WHSL CORP cs 22160K105 348 0 0.00 39 -4.88 0.0148
2014-02-14 2013-12-31 13F COSTCO WHSL CORP cs 22160K105 348 0 0.00 41 2.50 0.0161
2013-11-06 2013-09-30 13F COSTCO WHSL CORP cs 22160K105 348 30 9.43 40 14.29 0.0174
2013-08-15 2013-06-30 13F COSTCO WHSL CORP cs 22160K105 318 318 35 0.0171
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.