Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionFiduciary Group LLC
Latest Disclosed Ownership7,240 shares
Latest Disclosed Value $ 7,214,153
Fiduciary Group LLC reports 0.62% decrease in ownership of COST / Costco Wholesale Corporation

On May 11, 2026 - Fiduciary Group LLC filed a 13F-HR form disclosing ownership of 7,240 shares of Costco Wholesale Corporation (MX:COST) valued at $7,214,153 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 7,285 shares of Costco Wholesale Corporation. This represents a change in shares of -0.62% 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 7,240 -45 -0.62 7,214 14.84 0.6161
2026-02-12 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 7,285 -146 -1.96 6,282 -8.67 0.5276
2025-11-12 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 7,431 -68 -0.91 6,878 -7.34 0.6041
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 7,499 -84 -1.11 7,424 3.51 0.6987
2025-04-28 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 7,583 -98 -1.28 7,172 1.89 0.7186
2025-02-11 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 7,681 -154 -1.97 7,038 1.32 0.7059
2024-11-13 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 7,835 -99 -1.25 6,946 3.00 0.7035
2024-08-08 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 7,934 -129 -1.60 6,744 14.17 0.7252
2024-05-13 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 8,063 30 0.37 5,907 11.41 0.6436
2024-02-05 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 8,033 -322 -3.85 5,303 12.33 0.6212
2023-11-13 2023-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 8,355 -82 -0.97 4,720 3.92 0.6025
2023-11-13 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 8,355 -82 4,720 0.6025
2023-07-27 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 8,437 42 0.50 4,542 8.89 0.5580
2023-05-15 2023-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 8,395 -7 -0.08 4,171 8.76 0.5423
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 8,426 24 4,247 0.5458
2023-02-07 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 8,402 88 1.06 3,836 -10.10 0.5109
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 8,314 570 7.36 4,266 3.52 0.5526
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 7,744 2,325 42.90 4,121 55.51 0.5148
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 5,419 -732 -11.90 2,650 -24.11 0.3498
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 6,151 1 0.02 3,492 16.95 0.3884
2021-10-27 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 6,150 13 0.21 2,986 11.84 0.3388
2021-08-05 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 6,137 299 5.12 2,670 22.93 0.3089
2021-05-03 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 5,838 1,014 21.02 2,172 27.84 0.2642
2021-02-12 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 4,824 765 18.85 1,699 17.90 0.2242
2020-11-12 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 4,059 1,035 34.23 1,441 57.14 0.2177
2020-08-14 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 3,024 16 0.53 917 6.88 0.1530
2020-05-11 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 3,008 -66 -2.15 858 -5.09 0.1684
2020-02-14 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 3,074 -26 -0.84 904 1.23 0.1442
2019-11-13 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 3,100 -88 -2.76 893 6.06 0.1562
2019-08-05 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 3,188 0 0.00 842 9.07 0.1512
2019-05-08 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 3,188 -22 -0.69 772 18.04 0.1437
2019-02-13 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 3,210 -84 -2.55 654 -15.50 0.1352
2018-10-18 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 3,294 285 9.47 774 23.05 0.1517
2018-08-02 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 3,009 0 0.00 629 10.93 0.1330
2018-05-14 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 3,009 60 2.03 567 3.28 0.1229
2018-02-02 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 2,949 -260 -8.10 549 4.17 0.1172
2017-11-13 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 3,209 -487 -13.18 527 -10.83 0.1186
2017-08-11 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 3,696 -9 -0.24 591 -4.83 0.1364
2017-05-12 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 3,705 -305 -7.61 621 -3.27 0.1472
2017-02-13 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 4,010 -146 -3.51 642 1.26 0.1660
2016-10-25 2016-09-30 13F COSTCO WHSL CORP COM 22160K105 4,156 -115 -2.69 634 -5.51 0.1718
2016-08-10 2016-06-30 13F COSTCO WHSL CORP COM 22160K105 4,271 -1,437 -25.18 671 -25.36 0.1863
2016-05-13 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 5,708 -1,270 -18.20 899 -20.23 0.2603
2016-02-12 2015-12-31 13F COSTCO WHSL CORP COM 22160K105 6,978 -186 -2.60 1,127 8.78 0.3359
2015-11-12 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 7,164 -55 -0.76 1,036 6.26 0.3446
2015-07-30 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 7,219 7,219 975 0.3068
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.