Costco Wholesale Corporation
DE ˙ XTRA ˙ US22160K1051
843,00 € ↑27,00 (3,31%)
2026-06-04
AKTIENPREIS
SecurityDE:CTO / Costco Wholesale Corporation
InstitutionWs Management Lllp
Latest Disclosed Ownership7,568 shares
Latest Disclosed Value $ 7,540,982
Ws Management Lllp ownership in CTO / Costco Wholesale Corporation

On May 14, 2026 - Ws Management Lllp filed a 13F-HR form disclosing ownership of 7,568 shares of Costco Wholesale Corporation (DE:CTO) valued at $6,575,835 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 6,285 shares of Costco Wholesale Corporation. This represents a change in shares of 20.41% during the quarter. The current value of the position is $6,379,824 USD.

Ws Management Lllp has a history of taking positions in derivatives of the underlying security (CTO) in the form of stock options.

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.

Upgrade to unlock premium data and export to Excel .

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.

DE:CTO / 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 7,568 1,283 20.41 7,541 39.14 0.6657
2026-02-17 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 6,285 0 0.00 5,420 -6.84 0.4439
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 6,285 0 0.00 5,818 -6.49 0.6330
2025-08-14 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 6,285 0 0.00 6,222 4.66 0.8618
2025-05-14 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 6,285 -961 -13.26 5,944 -10.47 0.6636
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 7,246 -53,500 -88.07 6,639 -87.67 0.6163
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 60,746 10,000 19.71 53,853 24.85 3.7672
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 43,134 16.02 3.1777
2024-05-14 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 37,178 10.99 2.3406
2024-02-13 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 33,496 16.84 1.9886
2023-11-13 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 28,669 4.94 2.3123
2023-08-10 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 27,321 8.35 2.2853
2023-05-11 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 25,214 8.85 2.6663
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 23,166 -3.34 1.9874
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 23,966 -1.46 2.1744
2022-08-15 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 24,322 -16.77 1.9746
2022-05-12 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 29,222 1.43 1.4313
2022-02-11 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 28,809 26.34 2.2937
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 22,803 13.57 2.4127
2021-08-12 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 50,746 0 0.00 20,079 12.25 1.9809
2021-05-13 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 50,746 -2,391 -4.50 17,887 -10.66 1.8548
2021-02-11 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 53,137 0 0.00 20,021 6.13 2.0787
2020-11-12 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 53,137 0 0.00 18,864 17.08 2.0346
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 53,137 -9,476 -15.13 16,112 -9.75 1.9755
2020-05-13 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 62,613 0 0.00 17,853 -2.99 1.9489
2020-02-12 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 62,613 0 0.00 18,403 2.02 1.5769
2019-11-13 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 62,613 -6,977 -10.03 18,039 -1.91 1.4084
2019-08-13 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 69,590 -8,420 -10.79 18,390 -2.64 1.1925
2019-05-13 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 78,010 -10,724 -12.09 18,889 4.50 1.1442
2019-02-12 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 88,734 -20,211 -18.55 18,076 -29.36 0.8801
2018-11-13 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 108,945 0 0.00 25,589 12.40 0.8403
2018-08-13 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 108,945 -12,055 -9.96 22,767 -0.14 0.6423
2018-05-11 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 121,000 0 0.00 22,800 1.24 0.6022
2018-02-13 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 121,000 -8,500 -6.56 22,521 5.85 0.6622
2017-11-13 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 129,500 0 0.00 21,276 2.73 0.5303
2017-08-11 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 129,500 0 0.00 20,711 -4.63 0.7699
2017-05-10 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 129,500 0 0.00 21,716 4.74 0.8574
2017-02-10 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 129,500 -1,100 -0.84 20,734 4.10 0.8414
2016-11-14 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 130,600 0 0.00 19,918 -2.88 0.7631
2016-08-12 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 130,600 -1,600 -1.21 20,509 -1.55 0.7105
2016-05-11 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 132,200 0 0.00 20,832 -2.43 0.8073
2016-02-12 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 132,200 -3,700 -2.72 21,350 8.67 0.7441
2015-11-09 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 135,900 0 0.00 19,647 7.04 0.7773
2015-08-12 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 135,900 1,700 1.27 18,355 -9.72 0.6367
2015-05-13 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 134,200 -8,800 -6.15 20,331 0.30 0.6802
2015-02-11 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 143,000 0 0.00 20,270 13.11 0.6348
2014-11-13 2014-09-30 13F COSTCO WHSL CORP COM 22160K105 143,000 0 0.00 17,921 8.82 0.5753
2014-08-13 2014-06-30 13F COSTCO WHSL CORP COM 22160K105 143,000 500 0.35 16,468 3.48 0.5012
2014-05-14 2014-03-31 13F COSTCO WHSL CORP COM 22160K105 142,500 0 0.00 15,914 -6.17 0.5042
2014-02-13 2013-12-31 13F COSTCO WHSL CORP COM 22160K105 142,500 1,700 1.21 16,960 4.59 0.5623
2013-11-13 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 140,800 0 0.00 16,216 4.16 0.5612
2013-08-13 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 140,800 140,800 15,568 0.4989
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
(%)
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM Put 20,000 17,730 n/a n/a n/a
2024-08-14 2024-06-30 13F COSTCO WHSL CORP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2024-05-14 2024-03-31 13F COSTCO WHSL CORP COM Put 17,000 12,455 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.