Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionSimon Quick Advisors, Llc
Latest Disclosed Ownership2,082 shares
Latest Disclosed Value $ 2,074,104
Simon Quick Advisors, Llc reports 13.68% decrease in ownership of COST / Costco Wholesale Corporation

On May 6, 2026 - Simon Quick Advisors, Llc filed a 13F-HR form disclosing ownership of 2,082 shares of Costco Wholesale Corporation (MX:COST) valued at $2,074,104 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 2,412 shares of Costco Wholesale Corporation. This represents a change in shares of -13.68% 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)
2026-05-06 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 2,082 -330 -13.68 2,074 -0.24 0.0949
2026-01-29 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 2,412 1,116 86.11 2,080 73.39 0.0908
2025-10-21 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 1,296 283 27.94 1,200 19.66 0.0543
2025-10-08 2025-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 1,013 -3,322 -76.63 1,003 -75.56 0.0507
2025-08-04 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 5,619 1,284 5,562 0.2238
2025-04-15 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 4,335 833 23.79 4,100 27.77 0.2333
2025-01-17 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 3,502 132 3.92 3,209 7.43 0.1922
2024-10-15 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 3,370 631 23.04 2,987 28.31 0.1888
2024-08-02 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 2,739 639 30.43 2,328 51.37 0.1644
2024-04-19 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 2,100 362 20.83 1,539 34.09 0.1153
2024-01-16 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 1,738 222 14.64 1,147 34.00 0.1015
2023-10-24 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 1,516 449 42.08 857 49.13 0.0808
2023-08-01 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 1,067 105 10.91 575 20.08 0.0531
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 962 362 60.33 478 75.09 0.0518
2023-01-30 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 600 600 274 0.0325
2022-08-08 2022-06-30 13F Costco Wholesale COM 22160K105 0 -182 -100.00 0 -100.00
2022-05-05 2022-03-31 13F Costco Wholesale COM 22160K105 182 -87 -32.34 105 -31.37 0.0298
2022-02-08 2021-12-31 13F Costco Wholesale COM 22160K105 269 -225 -45.55 153 -31.08 0.0409
2021-10-27 2021-09-30 13F Costco Wholesale COM 22160K105 494 309 167.03 222 204.11 0.0571
2021-07-21 2021-06-30 13F Costco Wholesale COM 22160K105 185 6 3.35 73 15.87 0.0193
2021-05-06 2021-03-31 13F Costco Wholesale COM 22160K105 179 0 0.00 63 -7.35 0.0185
2021-01-27 2020-12-31 13F Costco Wholesale COM 22160K105 179 -142 -44.24 68 -40.35 0.0205
2020-10-26 2020-09-30 13F Costco Wholesale COM 22160K105 321 -165 -33.95 114 -22.45 0.0325
2020-08-04 2020-06-30 13F Costco Wholesale COM 22160K105 486 -5 -1.02 147 5.00 0.0557
2020-04-09 2020-03-31 13F Costco Wholesale COM 22160K105 491 278 130.52 140 122.22 0.0519
2020-01-06 2019-12-31 13F Costco Wholesale COM 22160K105 213 180 545.45 63 530.00 0.0228
2019-10-16 2019-09-30 13F Costco Wholesale COM 22160K105 33 -71 -68.27 10 -62.96 0.0044
2019-08-05 2019-06-30 13F Costco Wholesale COM 22160K105 104 104 27 0.0139
2018-08-10 2018-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 0 -110 -100.00 0 -100.00
2018-05-07 2018-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 110 -281 -71.87 21 -72.37 0.0088
2018-04-10 2017-12-31 13F/A-1 Costco Wholesale COM 22160K105 391 316 421.33 76 533.33 0.0339
2018-02-13 2017-12-31 13F Costco Wholesale COM 22160K105 391 316 76 0.0302
2017-11-06 2017-09-30 13F Costco Wholesale COM 22160K105 75 75 12 0.0044
2017-08-11 2017-06-30 13F Costco Wholesale Stock 22160K105 0 -105 -100.00 0 -100.00
2017-05-15 2017-03-31 13F/A-1 COSTCO WHOLESALE COM 22160K105 105 -3,790 -97.30 18 -97.12 0.0107
2017-05-11 2017-03-31 13F Costco Wholesale Stock 22160K105 105 -3,790 18 0.0122
2017-01-24 2016-12-31 13F Costco Wholesale COM 22160K105 3,895 3,895 624 0.4661
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.