Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionDaiwa Securities Group Inc.
Latest Disclosed Ownership149,179 shares
Latest Disclosed Value $ 148,646,431
Daiwa Securities Group Inc. ownership in COST / Costco Wholesale Corporation

On May 13, 2026 - Daiwa Securities Group Inc. filed a 13F-HR form disclosing ownership of 149,179 shares of Costco Wholesale Corporation (MX:COST) valued at $148,646,431 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 143,184 shares of Costco Wholesale Corporation. This represents a change in shares of 4.19% during the quarter.

Daiwa Securities Group Inc. 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)
2026-05-13 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 149,179 5,995 4.19 148,646 120,750.41 0.4273
2026-02-10 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 143,184 6,054 4.41 123 -2.38 0.3945
2025-11-14 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 137,130 3,698 2.77 127 -4.55 0.4283
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 133,432 3,587 2.76 132 8.20 0.4875
2025-05-13 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 129,845 19,751 17.94 123 22.00 0.5192
2025-02-07 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 110,094 4,473 4.23 101 7.53 0.4505
2024-11-12 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 105,621 16,836 18.96 94 24.00 0.4325
2024-08-07 2024-06-30 13F COSTCO WHSL COM 22160K105 88,785 8,016 9.92 75 27.12 0.4014
2024-05-02 2024-03-31 13F COSTCO WHSL COM 22160K105 80,769 10,144 14.36 59 28.26 0.3339
2024-01-31 2023-12-31 13F COSTCO WHSL COM 22160K105 70,625 4,197 6.32 47 24.32 0.2900
2023-11-01 2023-09-30 13F COSTCO WHSL COM 22160K105 66,428 -104,779 -61.20 38 23.33 0.2674
2023-07-31 2023-06-30 13F COSTCO WHSL COM 22160K105 171,207 114,608 202.49 31 7.14 0.2032
2023-05-02 2023-03-31 13F COSTCO WHSL COM 22160K105 56,599 3,504 6.60 28 16.67 0.1955
2023-02-06 2022-12-31 13F COSTCO WHSL COM 22160K105 53,095 -49,499 -48.25 24 -99.90 0.1861
2022-11-02 2022-09-30 13F COSTCO WHSL COM 22160K105 102,594 54,101 111.56 24,580 5.76 0.2042
2022-08-09 2022-06-30 13F COSTCO WHSL COM 22160K105 48,493 3,074 6.77 23,242 -11.14 0.1776
2022-04-29 2022-03-31 13F COSTCO WHSL COM 22160K105 45,419 6,499 16.70 26,155 18.38 0.1210
2022-04-29 2022-03-31 13F COSTCO WHSL COM 22160K105 1,179 679
2022-02-03 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 38,920 2,666 7.35 22,095 35.63 0.1300
2021-11-05 2021-09-30 13F COSTCO WHSL COM 22160K105 36,254 3,202 9.69 16,291 24.57 0.1071
2021-08-06 2021-06-30 13F COSTCO WHSL COM 22160K105 33,052 1,602 5.09 13,078 17.97 0.0881
2021-05-03 2021-03-31 13F COSTCO WHSL COM 22160K105 31,450 2,379 8.18 11,086 1.21 0.0825
2021-02-04 2020-12-31 13F COSTCO WHSL COM 22160K105 29,071 3,513 13.75 10,954 20.73 0.0847
2020-11-02 2020-09-30 13F COSTCO WHSL COM 22160K105 25,558 3,876 17.88 9,073 4,369.46 0.0822
2020-08-11 2020-06-30 13F COSTCO WHSL COM 22160K105 21,682 0 0.00 203 -96.72 0.0043
2020-05-14 2020-03-31 13F COSTCO WHSL COM 22160K105 21,682 1,628 8.12 6,182 4.87 0.0642
2020-01-31 2019-12-31 13F COSTCO WHSL COM 22160K105 20,054 211 1.06 5,895 3.11 0.0487
2019-11-04 2019-09-30 13F COSTCO WHSL COM 22160K105 19,843 1,554 8.50 5,717 18.29 0.0484
2019-07-24 2019-06-30 13F COSTCO WHSL COM 22160K105 18,289 650 3.69 4,833 13.16 0.0427
2019-04-26 2019-03-31 13F COSTCO WHSL COM 22160K105 17,639 -2,031 -10.33 4,271 6.59 0.0373
2019-02-05 2018-12-31 13F COSTCO WHSL COM 22160K105 19,670 700 3.69 4,007 -10.08 0.0384
2018-11-01 2018-09-30 13F COSTCO WHSL COM 22160K105 18,970 3,779 24.88 4,456 40.35 0.0373
2018-07-30 2018-06-30 13F COSTCO WHSL COM 22160K105 15,191 598 4.10 3,175 15.45 0.0250
2018-05-02 2018-03-31 13F COSTCO WHSL COM 22160K105 14,593 1,295 9.74 2,750 11.11 0.0220
2018-02-06 2017-12-31 13F COSTCO WHSL COM 22160K105 13,298 -8,312 -38.46 2,475 -30.28 0.0175
2017-11-02 2017-09-30 13F COSTCO WHSL COM 22160K105 21,610 160 0.75 3,550 3.50 0.0243
2017-07-28 2017-06-30 13F COSTCO WHSL COM 22160K105 21,450 9,300 76.54 3,430 68.38 0.0222
2017-05-02 2017-03-31 13F COSTCO WHSL COM 22160K105 12,150 850 7.52 2,037 12.60 0.0128
2017-02-01 2016-12-31 13F COSTCO WHSL COM 22160K105 11,300 600 5.61 1,809 10.85 0.0116
2017-01-10 2016-09-30 13F/A-1 COSTCO WHSL COM 22160K105 10,700 -950 -8.15 1,632 -10.82 0.0097
2016-11-04 2016-09-30 13F COSTCO WHSL COM 22160K105 10,700 1,632
2016-07-25 2016-06-30 13F COSTCO WHSL COM 22160K105 11,650 -40,950 -77.85 1,830 -77.92 0.0109
2016-05-12 2016-03-31 13F COSTCO WHSL COM 22160K105 52,600 15,600 42.16 8,289 38.70 0.0524
2016-02-04 2015-12-31 13F COSTCO WHSL COM 22160K105 37,000 26,900 266.34 5,976 309.32 0.0395
2015-11-10 2015-09-30 13F COSTCO WHSL COM 22160K105 10,100 200 2.02 1,460 9.20 0.0104
2015-08-05 2015-06-30 13F COSTCO WHSL COM 22160K105 9,900 -200 -1.98 1,337 -12.61 0.0095
2015-05-12 2015-03-31 13F COSTCO WHSL COM 22160K105 10,100 -250 -2.42 1,530 4.29 0.0102
2015-02-13 2014-12-31 13F COSTCO WHSL COM 22160K105 10,350 -750 -6.76 1,467 5.46 0.0104
2014-11-12 2014-09-30 13F COSTCO WHSL COM 22160K105 11,100 -2,700 -19.57 1,391 -12.46 0.0105
2014-08-13 2014-06-30 13F/A-1 COSTCO WHSL COM 22160K105 13,800 1,300 1,589 0.0118
2014-08-13 2014-06-30 13F/A-2 COSTCO WHSL COM 22160K105 13,800 1,300 10.40 1,589 13.83 0.0342
2014-08-13 2014-06-30 13F COSTCO WHSL COM 22160K105 13,800 1,589
2014-05-14 2014-03-31 13F/A-1 COSTCO WHSL COM 22160K105 12,500 -400 1,396 0.0109
2014-05-15 2014-03-31 13F/A-2 COSTCO WHSL COM 22160K105 12,500 -400 -3.10 1,396 -9.06 0.0109
2014-05-13 2014-03-31 13F COSTCO WHSL COM 22160K105 12,500 1,396
2014-02-13 2013-12-31 13F COSTCO WHSL COM 22160K105 12,900 -1,100 -7.86 1,535 -4.78 0.0130
2013-11-14 2013-09-30 13F COSTCO WHSL COM 22160K105 14,000 -300 -2.10 1,612 1.96 0.0128
2013-08-16 2013-06-30 13F/A-1 COSTCO WHSL COM 22160K105 14,300 14,300 1,581 0.0120
2013-08-13 2013-06-30 13F COSTCO WHSL COM 22160K105 14,300 1,581
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
(%)
2019-04-26 2019-03-31 13F COSTCO WHSL CALL CALL 0 -100.00 0 -100.00 n/a n/a n/a
2019-02-05 2018-12-31 13F COSTCO WHSL CALL CALL 300 0.00 1,471 -39.44 n/a n/a n/a
2018-11-01 2018-09-30 13F COSTCO WHSL CALL CALL 300 0.00 2,429 43.64 n/a n/a n/a
2018-07-30 2018-06-30 13F COSTCO WHSL CALL CALL 300 -14.29 1,691 24.06 n/a n/a n/a
2018-05-02 2018-03-31 13F COSTCO WHSL CALL CALL 350 -30.00 1,363 -25.88 n/a n/a n/a
2018-02-06 2017-12-31 13F COSTCO WHSL CALL CALL 500 1,839 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.