Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionBlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I
Latest Disclosed Ownership1,162 shares
Latest Disclosed Value $ 1,150,310
BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I reports 87.72% increase in ownership of COST / Costco Wholesale Corporation

On August 28, 2025 - BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I filed a NPORT-P form disclosing ownership of 1,162 shares of Costco Wholesale Corporation (US:COST) valued at $1,150,310 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 27, 2025 disclosing 619 shares of Costco Wholesale Corporation. This represents a change in shares of 87.72% during the quarter. The current value of the position is $1,174,956 USD.

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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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)
2025-08-28 2025-06-30 NP Costco Wholesale EC US22160K1051 1,162 543 87.72 1,150 96.58 0.7574
2025-05-27 2025-03-31 NP Costco Wholesale EC US22160K1051 619 -350 -36.12 585 -34.05 0.3907
2025-02-27 2024-12-31 NP Costco Wholesale EC US22160K1051 969 -520 -34.92 888 -32.80 0.5488
2024-11-26 2024-09-30 NP Costco Wholesale EC US22160K1051 1,489 448 43.04 1,320 49.32 0.8114
2024-08-27 2024-06-30 NP Costco Wholesale EC US22160K1051 1,041 263 33.80 885 55.36 0.5353
2024-05-28 2024-03-31 NP Costco Wholesale EC US22160K1051 778 -57 -6.83 570 3.27 0.3329
2024-02-27 2023-12-31 NP Costco Wholesale EC US22160K1051 835 691 479.86 551 580.25 0.3306
2023-11-22 2023-09-30 NP Costco Wholesale EC US22160K1051 144 -1,098 -88.41 81 -87.87 0.0489
2023-08-25 2023-06-30 NP Costco Wholesale EC US22160K1051 1,242 -203 -14.05 669 -6.83 0.3911
2023-05-26 2023-03-31 NP Costco Wholesale EC US22160K1051 1,445 -469 -24.50 718 -17.87 0.4240
2023-02-24 2022-12-31 NP Costco Wholesale EC US22160K1051 1,914 -523 -21.46 874 -24.09 0.5019
2022-11-28 2022-09-30 NP Costco Wholesale EC US22160K1051 2,437 1,613 195.75 1,151 191.88 0.6758
2022-08-26 2022-06-30 NP Costco Wholesale EC US22160K1051 824 -334 -28.84 395 -40.03 0.2217
2022-02-25 2021-12-31 NP Costco Wholesale EC US22160K1051 1,158 -554 -32.36 657 -14.56 0.3059
2021-11-26 2021-09-30 NP Costco Wholesale EC US22160K1051 1,712 -1,052 -38.06 769 -29.64 0.3521
2021-08-24 2021-06-30 NP Costco Wholesale EC US22160K1051 2,764 -101 -3.53 1,094 8.33 0.4965
2021-05-25 2021-03-31 NP Costco Wholesale EC US22160K1051 2,865 1,237 75.98 1,010 64.60 0.4605
2021-02-24 2020-12-31 NP Costco Wholesale EC US22160K1051 1,628 -943 -36.68 613 -32.79 0.2742
2020-11-24 2020-09-30 NP Costco Wholesale EC US22160K1051 2,571 -148 -5.44 913 10.68 0.4315
2020-08-24 2020-06-30 NP Costco Wholesale EC US22160K1051 2,719 -971 -26.31 824 -21.67 0.3948
2020-05-26 2020-03-31 NP Costco Wholesale EC US22160K1051 3,690 -807 -17.95 1,052 -20.36 0.5181
2020-02-25 2019-12-31 NP Costco Wholesale EC 22160K105 4,497 2,491 124.18 1,322 128.94 0.5595
2019-11-25 2019-09-30 NP Costco Wholesale EC US22160K1051 2,006 2,006 578 0.2459
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.