Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionBrookstone Capital Management
Latest Disclosed Ownership15,758 shares
Latest Disclosed Value $ 15,701,568
Brookstone Capital Management ownership in COST / Costco Wholesale Corporation

On April 16, 2026 - Brookstone Capital Management filed a 13F-HR form disclosing ownership of 15,758 shares of Costco Wholesale Corporation (MX:COST) valued at $15,701,568 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 15, 2026 disclosing 17,485 shares of Costco Wholesale Corporation. This represents a change in shares of -9.88% during the quarter.

Brookstone Capital Management 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)
2026-04-16 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 15,758 -1,727 -9.88 15,702 4.14 0.1794
2026-01-15 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 17,485 1,101 6.72 15,078 -0.58 0.1725
2025-10-15 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 16,384 -211 -1.27 15,165 -7.68 0.1809
2025-07-30 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 16,595 402 2.48 16,428 7.26 0.2155
2025-04-29 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 16,193 -1,255 -7.19 15,315 -4.20 0.2195
2025-01-13 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 17,448 533 3.15 15,987 6.61 0.2327
2024-10-08 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 16,915 374 2.26 14,996 7.12 0.2210
2024-07-18 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 16,541 1,597 10.69 13,999 27.86 0.2322
2024-04-15 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 14,944 -2,503 -14.35 10,948 -4.93 0.1957
2024-01-11 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 17,447 86 0.50 11,517 17.28 0.2239
2023-10-20 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 17,361 1,848 11.91 9,820 20.57 0.2156
2023-07-11 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 15,513 582 3.90 8,145 10.44 0.1639
2023-04-19 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 14,931 3,138 26.61 7,375 29.50 0.1436
2023-01-09 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 11,793 -184 -1.54 5,694 1.93 0.1153
2022-10-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 11,977 424 3.67 5,586 -3.59 0.1291
2022-07-11 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 11,553 238 2.10 5,794 -12.42 0.1282
2022-04-12 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 11,315 -1,605 -12.42 6,616 -4.50 0.1294
2022-01-11 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 12,920 1,687 15.02 6,928 38.50 0.1193
2021-11-03 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 11,233 119 1.07 5,002 10.57 0.0900
2021-07-14 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 11,114 6,264 129.15 4,524 164.56 0.0811
2021-04-16 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 4,850 1,191 32.55 1,710 24.00 0.0655
2021-01-13 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 3,659 254 7.46 1,379 14.06 0.0548
2020-10-13 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 3,405 839 32.70 1,209 55.40 0.0559
2020-07-21 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 2,566 -495 -16.17 778 -10.88 0.0485
2020-04-14 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 3,061 677 28.40 873 24.54 0.0502
2020-01-29 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 2,384 -3 -0.13 701 1.89 0.0356
2019-10-18 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 2,387 306 14.70 688 25.09 0.0374
2019-07-25 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 2,081 115 5.85 550 15.55 0.0318
2019-04-18 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 1,966 -816 -29.33 476 -16.05 0.0309
2019-02-05 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 2,782 70 2.58 567 -10.99 0.0430
2018-11-05 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 2,712 809 42.51 637 60.05 0.0485
2018-08-06 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 1,903 -182 -8.73 398 1.27 0.0347
2018-04-23 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 2,085 -88 -4.05 393 -2.72 0.0357
2018-02-07 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 2,173 -252 -10.39 404 1.51 0.0363
2017-10-31 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 2,425 111 4.80 398 7.57 0.0360
2017-08-08 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 2,314 53 2.34 370 -2.37 0.0353
2017-04-28 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 2,261 -184 -7.53 379 -3.07 0.0383
2017-01-12 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 2,445 -752 -23.52 391 -19.88 0.0429
2016-10-28 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 3,197 95 3.06 488 0.21 0.0537
2016-07-19 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 3,102 366 13.38 487 12.99 0.0636
2016-04-14 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 2,736 990 56.70 431 52.84 0.0650
2016-01-14 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 1,746 80 4.80 282 17.01 0.0542
2015-10-28 2015-09-30 13F COSTCO WHOLESALE CORPORATION COM COM 22160K105 1,666 -34 -2.00 241 4.78 0.0437
2015-08-11 2015-06-30 13F COSTCO WHOLESALE CORPORATION COM COM 22160K105 1,700 -378 -18.19 230 -26.98 0.0289
2015-05-14 2015-03-31 13F COSTCO WHOLESALE CORPORATION COM COM 22160K105 2,078 2,078 315 0.0477
2015-01-29 2014-12-31 13F COSTCO WHOLESALE CORPORATION COM COM 22160K105 0 -1,688 -100.00 0 -100.00
2014-10-14 2014-09-30 13F COSTCO WHOLESALE CORPORATION COM COM 22160K105 1,688 -72 -4.09 212 4.43 0.0399
2014-07-14 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 1,760 1,760 203 0.0414
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
(%)
2022-04-12 2022-03-31 13F COSTCO WHSL CORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-01-11 2021-12-31 13F COSTCO WHSL CORP COM Call 1,000 536 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.