코스트코 도매공사
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionUs Bancorp \de\
Latest Disclosed Ownership512,520 shares
Latest Disclosed Value $ 510,698,673
Us Bancorp \de\ ownership in COST / Costco Wholesale Corporation

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 512,520 shares of Costco Wholesale Corporation (MX:COST) valued at $510,698,673 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 517,948 shares of Costco Wholesale Corporation. This represents a change in shares of -1.05% during the quarter.

Us Bancorp \de\ 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 and put 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
(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)
2026-05-14 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 512,520 -5,428 -1.05 510,699 14.34 0.1911
2026-01-30 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 517,948 3,413 0.66 446,655 -6.22 0.5233
2025-11-12 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 514,535 -6,853 -1.31 476,276 -7.73 0.5645
2025-07-24 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 521,388 -11,011 -2.07 516,151 2.50 0.6498
2025-05-08 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 532,399 -11,765 -2.16 503,550 0.99 0.6727
2025-02-05 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 544,164 -8,150 -1.48 498,617 1.83 0.6528
2024-10-28 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 552,314 -4,659 -0.84 489,652 3.43 0.6287
2024-08-07 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 556,973 -8,091 -1.43 473,434 14.36 0.6454
2024-05-08 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 565,064 -21,386 -3.65 413,998 6.95 0.5770
2024-02-09 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 586,450 -13,507 -2.25 387,113 16.26 0.5727
2023-11-03 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 599,957 6,172 1.04 332,979 4.16 0.5442
2023-08-10 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 593,785 -11,758 -1.94 319,682 6.25 0.5147
2023-05-09 2023-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 605,543 -14,801 -2.39 300,876 6.24 0.5083
2023-02-13 2022-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 620,344 87,267 16.37 283,195 12.48 0.5013
2022-10-27 2022-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 533,077 -10,821 -1.99 251,762 -3.42 0.5196
2022-08-01 2022-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 543,898 -3,783 -0.69 260,687 -17.34 0.5053
2022-05-11 2022-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 547,681 -7,913 -1.42 315,391 -0.01 0.5250
2022-02-11 2021-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 555,594 -30,068 -5.13 315,421 19.85 0.4974
2021-11-10 2021-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 585,662 -12,729 -2.13 263,175 11.15 0.4950
2021-08-05 2021-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 598,391 16,073 2.76 236,771 15.35 0.4435
2021-04-28 2021-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 582,318 8,868 1.55 205,262 -5.00 0.4152
2021-02-04 2020-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 573,450 9,926 1.76 216,070 8.01 0.4653
2020-11-10 2020-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 563,524 41,465 7.94 200,053 26.38 0.4879
2020-08-07 2020-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 522,059 4,801 0.93 158,297 7.33 0.4154
2020-05-13 2020-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 517,258 -1,628 -0.31 147,487 -3.29 0.4600
2020-02-04 2019-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 518,886 1,754 0.34 152,512 2.36 0.3899
2019-11-08 2019-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 517,132 -5,750 -1.10 148,991 7.83 0.4060
2019-08-13 2019-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 522,882 -4,731 -0.90 138,178 8.16 0.3851
2019-05-08 2019-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 527,613 6,441 1.24 127,757 20.33 0.3687
2019-02-13 2018-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 521,172 -16,180 -3.01 106,168 -15.88 0.3428
2018-10-31 2018-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 537,352 4,656 0.87 126,214 13.38 0.3653
2018-08-08 2018-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 532,696 2,604 0.49 111,323 11.45 0.3411
2018-05-08 2018-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 530,092 2,241 0.42 99,885 1.67 0.3065
2018-02-02 2017-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 527,851 8,978 1.73 98,245 15.25 0.3004
2017-11-13 2017-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 518,873 38,621 8.04 85,247 10.99 0.2731
2017-07-19 2017-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 480,252 11,489 2.45 76,808 -2.29 0.2563
2017-05-03 2017-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 468,763 7,298 1.58 78,606 6.39 0.2693
2017-02-08 2016-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 461,465 5,463 1.20 73,884 6.24 0.2658
2016-11-04 2016-09-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 456,002 1,142 0.25 69,545 -2.64 0.2578
2016-08-10 2016-06-30 13F COSTCO WHOLESALE COMMON STOCK 22160K105 454,860 24,368 5.66 71,430 5.29 0.2717
2016-05-13 2016-03-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 430,492 -647 -0.15 67,838 -2.57 0.2666
2016-02-10 2015-12-31 13F COSTCO WHOLESALE COMMON STOCK 22160K105 431,139 15,921 3.83 69,630 16.00 0.2801
2015-11-16 2015-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 415,218 37,248 9.85 60,028 17.59 0.2517
2015-08-10 2015-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 377,970 2,793 0.74 51,048 -10.19 0.1978
2015-05-08 2015-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 375,177 -752 -0.20 56,837 6.66 0.2184
2015-02-13 2014-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 375,929 3,872 1.04 53,288 14.29 0.2060
2014-11-14 2014-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 372,057 -720 -0.19 46,626 8.61 0.1889
2014-08-14 2014-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 372,777 -7,878 -2.07 42,928 0.98 0.1711
2014-05-14 2014-03-31 13F COSTCO WHSL COMMON STOCK 22160K105 380,655 -5,918 -1.53 42,511 -7.61 0.1742
2014-02-13 2013-12-31 13F COSTCO WHSL COMMON STOCK 22160K105 386,573 -15,429 -3.84 46,011 -0.62 0.1864
2013-11-07 2013-09-30 13F COSTCO WHSL COMMON STOCK 22160K105 402,002 -8,169 -1.99 46,299 2.09 0.2046
2013-08-09 2013-06-30 13F COSTCO WHSL COMMON STOCK 22160K105 410,171 410,171 45,353 0.2069
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
(%)
2024-05-08 2024-03-31 13F COSTCO WHSL CORP COM Call 0 -100.00 0 n/a n/a n/a
2024-02-09 2023-12-31 13F COSTCO WHSL CORP COM Call 17 0 n/a n/a n/a
Disclosed Put 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
(%)
2024-05-08 2024-03-31 13F COSTCO WHSL CORP COM Put 0 -100.00 0 n/a n/a n/a
2024-02-09 2023-12-31 13F COSTCO WHSL CORP COM Put 2 0.00 0 n/a n/a n/a
2023-11-03 2023-09-30 13F COSTCO WHSL CORP COM Put 2 1 n/a n/a n/a
2023-08-09 2023-06-30 13F COSTCO WHSL COMMON STOCK Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-09 2023-03-31 13F COSTCO WHSL COMMON STOCK Put 2 5 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.