Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionSmith Shellnut Wilson Llc /adv
Latest Disclosed Ownership1,445 shares
Latest Disclosed Value $ 1,337,535
Smith Shellnut Wilson Llc /adv reports 11.93% increase in ownership of COST / Costco Wholesale Corporation

On October 27, 2025 - Smith Shellnut Wilson Llc /adv filed a 13F-HR form disclosing ownership of 1,445 shares of Costco Wholesale Corporation (US:COST) valued at $1,337,535 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 5, 2025 disclosing 1,291 shares of Costco Wholesale Corporation. This represents a change in shares of 11.93% during the quarter. The current value of the position is $1,404,352 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)
2025-10-27 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 1,445 154 11.93 1,338 4.62 0.5138
2025-08-05 2025-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,291 -21 -1.60 1,278 3.06 0.5542
2025-04-17 2025-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,312 41 3.23 1,241 6.53 0.5687
2025-03-04 2024-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,271 41 3.33 1,165 6.79 0.5155
2024-10-31 2024-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,230 31 2.59 1,090 6.97 0.4929
2024-07-26 2024-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,199 4 0.33 1,019 16.46 0.4948
2024-05-01 2024-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,195 4 0.34 875 11.32 0.4642
2024-02-21 2023-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,191 50 4.38 786 22.05 0.4509
2023-11-14 2023-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 0 0.00 645 4.89 0.3944
2023-08-04 2023-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 0 0.00 614 8.48 0.3464
2023-05-12 2023-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 0 0.00 567 8.85 0.3446
2023-02-13 2022-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 0 0.00 521 -3.53 0.3216
2022-11-03 2022-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 0 0.00 539 -1.46 0.3584
2022-08-02 2022-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 0 0.00 547 -16.74 0.3387
2022-05-02 2022-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 0 0.00 657 1.39 0.3439
2022-02-03 2021-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,141 -100 -8.06 648 16.13 0.3209
2021-11-12 2021-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 1,241 344 38.35 558 57.18 0.3229
2021-08-12 2021-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 897 -73 -7.53 355 3.80 0.2066
2021-04-06 2021-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 970 0 0.00 342 -6.30 0.2088
2021-02-05 2020-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 970 75 8.38 365 14.78 0.2176
2020-11-12 2020-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 895 0 0.00 318 17.34 0.1188
2020-08-26 2020-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 895 0 0.00 271 6.27 0.1941
2020-04-20 2020-03-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 895 0 0.00 255 -3.04 0.2139
2020-02-05 2019-12-31 13F COSTCO WHSL CORP NEW COM COM 22160K105 895 0 0.00 263 1.94 0.1753
2019-11-06 2019-09-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 895 -57 -5.99 258 2.38 0.1911
2019-08-14 2019-06-30 13F COSTCO WHSL CORP NEW COM COM 22160K105 952 0 0.00 252 9.09 0.1893
2019-05-14 2019-03-31 13F/A-1 COSTCO WHSL CORP NEW COM COM 22160K105 952 952 231 0.1829
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.