Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionG&S Capital LLC
Latest Disclosed Ownership222 shares
Latest Disclosed Value $ 221,207
G&S Capital LLC ownership in COST / Costco Wholesale Corporation

On April 7, 2026 - G&S Capital LLC filed a 13F-HR form disclosing ownership of 222 shares of Costco Wholesale Corporation (MX:COST) valued at $221,207 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 0 shares of Costco Wholesale Corporation.

G&S Capital LLC has a history of taking positions in derivatives of the underlying security (COST) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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 .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:COST / Costco Wholesale Corporation Historical Put/Call Ratio
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)
2026-04-07 2026-03-31 13F COSTCO WHSL CORP COM 22160K105 222 222 221 0.0777
2026-01-28 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -100.00 0
2025-10-23 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 865 328 61.08 801 50.66 0.2960
2025-07-17 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 537 4 0.75 532 5.36 0.2106
2025-04-25 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 533 311 140.09 504 148.28 0.2140
2025-01-30 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 222 222 203 0.0840
2024-04-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -356 -100.00 0 -100.00
2024-01-29 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 356 356 235 0.1116
2023-04-21 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -1,222 -100.00 0 -100.00
2023-01-23 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 1,222 -345 -22.02 558 -24.73 0.2471
2022-10-24 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 1,567 1,109 242.14 740 236.36 0.3927
2022-07-21 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 458 -60 -11.58 220 -26.17 0.1298
2022-04-15 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 518 0 0.00 298 1.36 0.1593
2022-01-20 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 518 -13 -2.45 294 23.01 0.1465
2021-10-19 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 531 -10 -1.85 239 11.68 0.1315
2021-07-22 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 541 541 214 0.1122
2021-04-15 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -568 -100.00 0 -100.00
2021-01-21 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 568 0 0.00 214 5.94 0.1280
2020-10-21 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 568 568 0.00 202 -5.61 0.1459
2020-07-24 2020-06-30 13F COSTCO WHOLESALE Stock 22160K105 0 -568 -100.00 0 -100.00
2020-04-23 2020-03-31 13F COSTCO WHOLESALE Stock 22160K105 568 0 0.00 161 -3.01 0.2819
2020-01-21 2019-12-31 13F COSTCO WHOLESALE Stock 22160K105 568 138 32.09 166 33.87 0.0937
2019-10-17 2019-09-30 13F COSTCO WHOLESALE Stock 22160K105 430 0 0.00 124 8.77 0.0723
2019-07-19 2019-06-30 13F COSTCO WHOLESALE Stock 22160K105 430 0 0.00 114 9.62 0.0684
2019-04-22 2019-03-31 13F COSTCO WHOLESALE Stock 22160K105 430 25 6.17 104 25.30 0.0639
2019-01-15 2018-12-31 13F COSTCO WHOLESALE Stock 22160K105 405 0 0.00 83 -12.63 0.0752
2018-10-30 2018-09-30 13F COSTCO WHOLESALE Stock 22160K105 405 0 0.00 95 11.76 0.0656
2018-08-01 2018-06-30 13F COSTCO WHOLESALE Stock 22160K105 405 0 0.00 85 11.84 0.0651
2018-04-24 2018-03-31 13F COSTCO WHOLESALE Stock 22160K105 405 -300 -42.55 76 -41.98 0.0642
2018-02-14 2017-12-31 13F COSTCO WHOLESALE Stock 22160K105 705 705 131 0.0962
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2020-04-23 2020-03-31 13F COSTCO WHOLESALE Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-01-21 2019-12-31 13F COSTCO WHOLESALE Stock Call 200 58 n/a n/a n/a
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.