Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionStrategic Blueprint, LLC
Latest Disclosed Ownership3,275 shares
Latest Disclosed Value $ 3,262,992
Strategic Blueprint, LLC ownership in COST / Costco Wholesale Corporation

On April 29, 2026 - Strategic Blueprint, LLC filed a 13F-HR form disclosing ownership of 3,275 shares of Costco Wholesale Corporation (MX:COST) valued at $3,262,992 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 4,116 shares of Costco Wholesale Corporation. This represents a change in shares of -20.43% during the quarter.

Strategic Blueprint, 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.

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Institutional Put/Call Ratios
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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)
2026-04-29 2026-03-31 13F COSTCO WHOLESALE CORPORATION COM Stock 22160K105 3,275 -841 -20.43 3,263 -8.09 0.1897
2026-01-30 2025-12-31 13F COSTCO WHOLESALE CORPORATION COM Stock 22160K105 4,116 -1,552 -27.38 3,550 -32.35 0.2092
2025-10-23 2025-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 5,668 -215 -3.65 5,246 -9.91 0.2288
2025-07-30 2025-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 5,883 951 19.28 5,823 24.85 0.2858
2025-04-29 2025-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 4,932 -43 -0.86 4,665 2.33 0.2545
2025-01-23 2024-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 4,975 607 13.90 4,559 17.72 0.2710
2024-10-25 2024-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 4,368 -223 -4.86 3,872 -0.74 0.2410
2024-07-26 2024-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 4,591 117 2.62 3,902 19.04 0.2651
2024-04-23 2024-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 4,474 485 12.16 3,278 24.46 0.2327
2024-01-25 2023-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 3,989 202 5.33 2,633 23.09 0.2174
2023-10-18 2023-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 3,787 339 9.83 2,139 15.25 0.1972
2023-10-18 2023-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 3,448 165 5.03 1,856 13.80 0.1767
2023-04-28 2023-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 3,283 84 2.63 1,631 11.71 0.1680
2023-01-26 2022-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 3,199 65 2.07 1,460 -1.35 0.1691
2022-11-08 2022-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 3,134 -28 -0.89 1,480 -2.31 0.1773
2022-08-12 2022-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 3,162 341 12.09 1,515 -6.77 0.1866
2022-08-12 2022-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 2,821 120 4.44 1,625 5.93 0.1888
2022-02-14 2021-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 2,701 292 12.12 1,534 41.64 0.1936
2021-11-12 2021-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 2,409 675 38.93 1,083 57.87 0.1682
2021-08-12 2021-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 1,734 779 81.57 686 103.56 0.1075
2021-05-10 2021-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 955 -52 -5.16 337 -11.08 0.0716
2021-01-26 2020-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 1,007 -5,783 -85.17 379 -84.27 0.0952
2020-10-27 2020-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 6,790 -978 -12.59 2,410 2.34 0.7459
2020-07-20 2020-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,768 5,952 327.75 2,355 354.63 0.8298
2020-04-20 2020-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 1,816 1,816 518 0.3024
2020-01-10 2019-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 0 -676 -100.00 0 -100.00
2019-10-16 2019-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 676 676 195 0.1468
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
(%)
2025-01-23 2024-12-31 13F COSTCO WHSL CORP NEW COM Stock Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-10-25 2024-09-30 13F COSTCO WHSL CORP NEW COM Stock Call 100 89 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.