Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionColdstream Capital Management Inc
Latest Disclosed Ownership31,472 shares
Latest Disclosed Value $ 31,358,543
Coldstream Capital Management Inc ownership in COST / Costco Wholesale Corporation

On May 8, 2026 - Coldstream Capital Management Inc filed a 13F-HR form disclosing ownership of 31,472 shares of Costco Wholesale Corporation (US:COST) valued at $31,359,645 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 26,963 shares of Costco Wholesale Corporation. This represents a change in shares of 16.72% during the quarter. The current value of the position is $30,270,714 USD.

Coldstream Capital Management Inc has a history of taking positions in derivatives of the underlying security (COST) 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.

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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.

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)
2026-05-08 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 31,472 4,509 16.72 31,359 34.87 0.3366
2026-02-09 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 26,963 4,452 19.78 23,251 11.59 0.2997
2025-11-19 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 22,511 -2,069 -8.42 20,837 -14.37 0.2806
2025-08-12 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 24,580 756 3.17 24,333 7.99 0.3980
2025-05-13 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 23,824 1,103 4.85 22,532 8.23 0.4798
2025-02-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 22,721 79 0.35 20,819 3.43 0.4437
2024-11-18 2024-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 22,642 1,345 6.32 20,129 11.19 0.4349
2024-11-18 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 22,642 20,129
2024-08-07 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 21,297 158 0.75 18,102 16.89 0.4411
2024-05-14 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 21,139 1,071 5.34 15,487 16.92 0.3933
2024-02-09 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 20,068 -374 -1.83 13,247 14.70 0.3706
2023-11-02 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 20,442 777 3.95 11,549 9.08 0.3772
2023-08-03 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 19,665 -360 -1.80 10,587 6.41 0.3354
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 20,025 -7,094 -26.16 9,950 -19.63 0.3341
2023-01-10 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 27,119 -2,311 -7.85 12,380 -12.24 0.4532
2022-08-08 2022-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 29,430 725 2.53 14,106 -14.66 0.5495
2022-08-08 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 26,825 -1,880 12,857 0.5467
2022-05-11 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 28,705 -6,893 -19.36 16,530 -18.20 0.5695
2022-02-11 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 35,598 3,120 9.61 20,209 75.27 0.6345
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 32,478 3,239 11.08 11,530 -0.34 0.5588
2021-08-16 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 29,239 -1,280 -4.19 11,569 7.55 0.4658
2021-06-16 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 30,519 574 1.92 10,757 -4.66 0.6299
2021-02-16 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 29,945 4,961 19.86 11,283 27.20 0.6806
2020-11-16 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 24,984 -107 -0.43 8,870 16.60 0.7383
2020-08-12 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 25,091 -4,019 -13.81 7,607 -8.35 0.6830
2020-05-27 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 29,110 -3,828 -11.62 8,300 -14.27 0.9071
2020-02-13 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 32,938 -109 -0.33 9,681 1.67 0.7938
2019-11-15 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 33,047 -1,493 -4.32 9,522 4.32 0.8018
2019-08-15 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 34,540 125 0.36 9,128 9.54 0.7597
2019-05-10 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 34,415 566 1.67 8,333 20.86 0.7287
2019-02-26 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 33,849 177 0.53 6,895 -12.81 0.6693
2018-11-14 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 33,672 860 2.62 7,908 15.31 0.7164
2018-08-14 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 32,812 70 0.21 6,858 11.15 0.6929
2018-05-15 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 32,742 1,526 4.89 6,170 6.20 0.6661
2018-02-14 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 31,216 2,316 8.01 5,810 22.37 0.6303
2017-11-15 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 28,900 456 1.60 4,748 4.37 0.5523
2017-08-14 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 28,444 818 2.96 4,549 -1.81 0.5868
2017-05-09 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 27,626 252 0.92 4,633 5.70 0.6401
2017-02-09 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 27,374 13,662 99.64 4,383 109.61 0.7132
2016-11-14 2016-09-30 13F/A-2 COSTCO WHSL CORP COM 22160K105 13,712 -851 -5.84 2,091 -8.57 0.3706
2016-11-14 2016-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 13,712 -851 2,091 0.3706
2016-11-14 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 13,712 -851 2,091 0.3706
2016-08-09 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 14,563 677 4.88 2,287 4.52 0.4052
2016-05-16 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 13,886 11,575 500.87 2,188 486.60 0.3986
2016-02-04 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 2,311 660 39.98 373 56.07 0.0810
2015-11-09 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 1,651 1,651 239 0.0639
2014-11-13 2014-09-30 13F Costco Wholesale COM 22160K105 0 -3,659 -100.00 0 -100.00
2014-08-14 2014-06-30 13F Costco Wholesale COM 22160K105 3,659 -38 -1.03 421 1.94 0.1235
2014-05-07 2014-03-31 13F Costco Wholesale COM 22160K105 3,697 529 16.70 413 9.55 0.1338
2014-02-14 2013-12-31 13F Costco Wholesale COM 22160K105 3,168 -2,202 -41.01 377 -39.00 0.1215
2013-11-07 2013-09-30 13F Costco Wholesale PUT 22160K105 5,370 1 0.02 618 4.04 0.2035
2013-08-14 2013-06-30 13F Costco Wholesale PUT 22160K105 5,369 5,369 594 0.2008
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
(%)
2014-05-07 2014-03-31 13F Costco Wholesale COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2014-02-14 2013-12-31 13F Costco Wholesale COM Put 2,000 -62.76 238 -61.49 n/a n/a n/a
2013-11-07 2013-09-30 13F Costco Wholesale PUT 5,370 0.02 618 4.04 n/a n/a n/a
2013-08-14 2013-06-30 13F Costco Wholesale PUT 5,369 594 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.