Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionHall Capital Management Co Inc
Latest Disclosed Ownership6,005 shares
Latest Disclosed Value $ 6,092,253
Hall Capital Management Co Inc reports 2.40% increase in ownership of COST / Costco Wholesale Corporation

On May 11, 2026 - Hall Capital Management Co Inc filed a 13F-HR form disclosing ownership of 6,005 shares of Costco Wholesale Corporation (MX:COST) valued at $6,092,253 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 5,864 shares of Costco Wholesale Corporation. This represents a change in shares of 2.40% during the quarter.

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)
2026-05-11 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 6,005 141 2.40 6,092 20.49 2.1774
2026-02-17 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 5,864 57 0.98 5,057 -5.93 1.9519
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 5,807 -98 -1.66 5,375 -8.04 2.1192
2025-07-23 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 5,905 20 0.34 5,846 5.03 2.4692
2025-05-08 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 5,885 53 0.91 5,566 4.15 2.5783
2025-02-24 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 5,832 -145 -2.43 5,344 5.18 2.4926
2024-07-26 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 5,977 -127 -2.08 5,080 13.62 2.4217
2024-05-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 6,104 -117 -1.88 4,472 8.89 2.2069
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 6,221 -244 -3.77 4,106 12.43 2.4106
2023-10-11 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 6,465 -1,603 -19.87 3,652 -15.91 2.3424
2023-08-08 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 8,068 177 2.24 4,344 10.79 2.4547
2023-04-18 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 7,891 13 0.17 3,921 9.01 2.3254
2023-02-10 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 7,878 318 4.21 3,596 0.73 2.1610
2022-10-19 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 7,560 -62 -0.81 3,570 -2.27 2.3749
2022-07-19 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 7,622 528 7.44 3,653 -10.58 2.4040
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 7,094 62 0.88 4,085 2.33 2.3911
2022-05-04 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 7,032 237 3.49 3,992 30.76 2.2576
2021-10-08 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 6,795 129 1.94 3,053 15.73 1.9491
2021-07-14 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 6,666 -1,206 -15.32 2,638 -11.06 1.7025
2021-03-02 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 7,872 125 1.61 2,966 7.97 2.1431
2020-11-12 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 7,747 -160 -2.02 2,747 14.60 2.1757
2020-11-16 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 7,907 -85 -1.06 2,397 5.18 2.0164
2020-04-29 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 7,992 50 0.63 2,279 -2.36 2.3288
2020-02-04 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 7,942 325 4.27 2,334 6.33 1.9006
2019-10-15 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 7,617 109 1.45 2,195 10.64 1.9126
2019-08-14 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 7,508 30 0.40 1,984 9.55 1.6933
2019-05-06 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 7,478 -155 -2.03 1,811 16.46 1.5764
2019-02-14 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 7,633 -107 -1.38 1,555 -14.47 1.5465
2018-11-05 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 7,740 -135 -1.71 1,818 10.45 1.5760
2018-08-14 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 7,875 350 4.65 1,646 16.08 1.5520
2018-05-15 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 7,525 -395 -4.99 1,418 -3.80 1.3601
2018-02-02 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 7,920 -25 -0.31 1,474 12.95 1.2891
2017-10-19 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 7,945 -120 -1.49 1,305 1.16 1.2027
2017-08-14 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 8,065 -20 -0.25 1,290 -4.87 1.2132
2017-05-12 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 8,085 -425 -4.99 1,356 -0.44 1.2861
2017-02-07 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 8,510 -3,780 -30.76 1,362 -23.31 1.3263
2015-10-28 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 12,290 0 0.00 1,776 7.05 2.1124
2015-11-12 2015-06-30 13F/A-2 COSTCO WHSL CORP COM 22160K105 12,290 -75 -0.61 1,659 -11.43 1.8856
2015-09-03 2015-06-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 12,290 0 1,659 1.8856
2015-08-03 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 12,290 1,659
2015-11-12 2015-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 12,365 0 0.00 1,873 6.91 1.9408
2015-07-13 2015-03-31 13F COSTCO WHSL CORP COM 22160K105 12,365 1,873
2015-11-12 2014-12-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 12,365 12,365 1,752 1.8024
2015-07-13 2014-12-31 13F COSTCO WHSL CORP COM 22160K105 12,365 1,752
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.