Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionDynamic Advisor Solutions LLC
Latest Disclosed Ownership19,723 shares
Latest Disclosed Value $ 19,652,150
Dynamic Advisor Solutions LLC ownership in COST / Costco Wholesale Corporation

On April 8, 2026 - Dynamic Advisor Solutions LLC filed a 13F-HR form disclosing ownership of 19,723 shares of Costco Wholesale Corporation (MX:COST) valued at $19,652,150 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 19,859 shares of Costco Wholesale Corporation. This represents a change in shares of -0.68% during the quarter.

Dynamic Advisor Solutions 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)
2026-04-08 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 19,723 -136 -0.68 19,652 14.76 0.6193
2026-01-09 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 19,859 -4,130 -17.22 17,125 -22.87 0.5495
2025-10-09 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 23,989 122 0.51 22,205 -6.02 0.6444
2025-07-09 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 23,867 -354 -1.46 23,627 3.14 0.7297
2025-04-17 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 24,221 -372 -1.51 22,907 1.66 0.7548
2025-01-21 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 24,593 -953 -3.73 22,533 -0.50 0.9748
2024-10-07 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 25,546 323 1.28 22,647 5.63 0.6796
2024-07-15 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 25,223 1,644 6.97 21,439 24.11 0.6750
2024-04-12 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 23,579 1,278 5.73 17,274 18.08 0.5832
2024-01-10 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 22,301 8,384 60.24 14,630 86.07 0.5452
2023-10-11 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 13,917 660 4.98 7,863 10.16 0.3715
2023-08-03 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 13,257 -1,051 -7.35 7,137 0.39 0.3702
2023-04-11 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 14,308 2,032 16.55 7,109 26.86 0.4160
2023-01-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 12,276 235 1.95 5,604 -1.44 0.3826
2022-10-20 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 12,041 450 3.88 5,686 2.34 0.4335
2022-07-27 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 11,591 329 2.92 5,556 -14.33 0.4267
2022-04-11 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 11,262 -1,615 -12.54 6,485 -11.29 0.4514
2022-01-26 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 12,877 1,979 18.16 7,310 49.28 0.5222
2021-10-28 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 10,898 -3,873 -26.22 4,897 -16.20 0.3686
2021-08-10 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 14,771 -2,289 -13.42 5,844 -2.81 0.4630
2021-04-27 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 17,060 -2,107 -10.99 6,013 -16.74 0.5582
2021-02-03 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 19,167 -1,255 -6.15 7,222 -0.39 0.6758
2020-10-27 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 20,422 6,910 51.14 7,250 76.96 0.8228
2020-08-05 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 13,512 450 3.45 4,097 10.02 0.5534
2020-05-07 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 13,062 -1,205 -8.45 3,724 -11.19 0.6795
2020-02-04 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 14,267 -15 -0.11 4,193 1.90 0.5717
2019-11-13 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 14,282 -371 -2.53 4,115 6.28 0.6387
2019-08-13 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 14,653 -701 -4.57 3,872 4.14 0.6220
2019-04-10 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 15,354 -2,467 -13.84 3,718 -0.21 0.7015
2019-01-29 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 17,821 -1,517 -7.84 3,726 -17.97 0.7916
2018-11-14 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 19,338 303 1.59 4,542 14.15 0.9420
2018-08-07 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 19,035 735 4.02 3,979 15.40 0.9023
2018-05-01 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 18,300 4,120 29.06 3,448 30.66 0.8847
2018-02-09 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 14,180 3,205 29.20 2,639 46.37 0.8647
2017-10-16 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 10,975 2,491 29.36 1,803 32.87 0.7129
2017-07-10 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 8,484 66 0.78 1,357 -3.90 0.5250
2017-04-10 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 8,418 -3,363 -28.55 1,412 -25.13 0.5503
2017-01-19 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 11,781 2,530 27.35 1,886 33.66 0.7519
2016-10-11 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 9,251 -3,878 -29.54 1,411 -31.57 0.5342
2016-07-22 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 13,129 133 1.02 2,062 0.68 0.8354
2016-05-02 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 12,996 -343 -2.57 2,048 -4.92 0.8695
2016-01-20 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 13,339 253 1.93 2,154 13.85 0.8906
2015-10-23 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 13,086 7,609 138.93 1,892 155.68 0.9545
2015-08-14 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 5,477 413 8.16 740 -3.52 0.4323
2015-05-12 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 5,064 5,064 767 0.3846
2015-02-02 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -5,391 -100.00 0 -100.00
2014-12-03 2014-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 5,391 -3,936 -42.20 676 -37.06 0.3677
2014-11-12 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 5,391 -3,936 676 0.3662
2014-08-11 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 9,327 -1,400 -13.05 1,074 -10.35 0.6452
2014-05-05 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 10,727 2,677 33.25 1,198 25.05 0.8170
2014-02-12 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 8,050 8,050 958 0.7094
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
(%)
2021-02-03 2020-12-31 13F COSTCO WHSL CORP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-10-27 2020-09-30 13F COSTCO WHSL CORP COM Call 100 0.00 3 200.00 n/a n/a n/a
2020-08-05 2020-06-30 13F COSTCO WHSL CORP COM Call 100 1 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.