Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionBurney Co/
Latest Disclosed Ownership2,950 shares
Latest Disclosed Value $ 2,939,654
Burney Co/ reports 29.53% decrease in ownership of COST / Costco Wholesale Corporation

On April 29, 2026 - Burney Co/ filed a 13F-HR form disclosing ownership of 2,950 shares of Costco Wholesale Corporation (MX:COST) valued at $2,939,654 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 4,186 shares of Costco Wholesale Corporation. This represents a change in shares of -29.53% 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)
2026-04-29 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 2,950 -1,236 -29.53 2,940 -18.56 0.0751
2026-01-23 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 4,186 110 2.70 3,610 -4.35 0.1125
2025-10-16 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 4,076 -137 -3.25 3,773 -9.52 0.1200
2025-08-05 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 4,213 -50 -1.17 4,171 3.42 0.1412
2025-05-06 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 4,263 76 1.82 4,032 5.11 0.1467
2025-01-14 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 4,187 -3,225 -43.51 3,837 -41.62 0.1356
2024-10-18 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 7,412 5,377 264.23 6,571 280.05 0.2337
2024-07-29 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 2,035 125 6.54 1,730 23.59 0.0661
2024-05-22 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 1,910 -1,279 -40.11 1,399 -33.54 0.0533
2024-02-12 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 3,189 699 28.07 2,105 49.72 0.0886
2023-11-08 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 2,490 -69 -2.70 1,407 2.11 0.0659
2023-08-09 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 2,559 188 7.93 1,378 16.89 0.0632
2023-05-10 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 2,371 7 0.30 1,178 9.18 0.0581
2023-02-06 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 2,364 -1,295 -35.39 1,079 -37.56 0.0547
2022-11-15 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 3,659 1,395 61.62 1,728 59.26 0.0954
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 2,264 47 2.12 1,085 -15.04 0.0571
2022-05-09 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 2,217 -133 -5.66 1,277 -4.27 0.0524
2022-02-11 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 2,350 215 10.07 1,334 39.10 0.0576
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 2,135 2 0.09 959 13.63 0.0450
2021-08-06 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 2,133 -53 -2.42 844 9.47 0.0393
2021-05-13 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 2,186 -421 -16.15 771 -21.49 0.0380
2021-02-11 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 2,607 -181 -6.49 982 -0.71 0.0539
2020-12-14 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 2,788 -297 -9.63 989 5.78 0.0613
2020-08-13 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 3,085 384 14.22 935 21.43 0.0607
2020-05-13 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 2,701 44 1.66 770 -1.41 0.0592
2020-02-14 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 2,657 1,071 67.53 781 70.90 0.0430
2019-11-12 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 1,586 -94 -5.60 457 2.93 0.0274
2019-08-12 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 1,680 -147 -8.05 444 0.45 0.0269
2019-05-13 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 1,827 -416 -18.55 442 -3.28 0.0274
2019-02-12 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 2,243 306 15.80 457 0.44 0.0322
2018-11-13 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 1,937 -315 -13.99 455 -3.40 0.0271
2018-08-13 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 2,252 78 3.59 471 14.88 0.0276
2018-05-08 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 2,174 -655 -23.15 410 -22.05 0.0254
2018-02-13 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 2,829 560 24.68 526 41.40 0.0297
2017-11-13 2017-09-30 13F/A-1 Costco Wholesale COM 22160K105 2,269 277 13.91 372 17.72 0.0242
2017-11-09 2017-09-30 13F Costco Wholesale COM 22160K105 1,992 0 316
2017-08-09 2017-06-30 13F Costco Wholesale COM 22160K105 1,992 197 10.97 316 4.98 0.0207
2017-05-11 2017-03-31 13F Costco Wholesale COM 22160K105 1,795 -6,336 -77.92 301 -76.88 0.0198
2017-02-07 2016-12-31 13F Costco Wholesale COM 22160K105 8,131 -1,763 -17.82 1,302 -11.91 0.0885
2016-11-14 2016-09-30 13F Costco Wholesale COM 22160K105 9,894 264 2.74 1,478 -2.25 0.1043
2016-08-10 2016-06-30 13F Costco Wholesale COM 22160K105 9,630 631 7.01 1,512 6.63 0.1085
2016-05-02 2016-03-31 13F Costco Wholesale COM 22160K105 8,999 3,039 50.99 1,418 47.55 0.1033
2016-02-09 2015-12-31 13F Costco Wholesale COM 22160K105 5,960 -217 -3.51 961 7.61 0.0712
2015-11-03 2015-09-30 13F Costco Wholesale COM 22160K105 6,177 671 12.19 893 20.03 0.0688
2015-08-10 2015-06-30 13F Costco Wholesale COM 22160K105 5,506 -1,359 -19.80 744 -28.46 0.0506
2015-05-12 2015-03-31 13F Costco Wholesale COM 22160K105 6,865 1,489 27.70 1,040 36.48 0.0713
2015-02-11 2014-12-31 13F COSTCO COM 22160K105 5,376 -204 -3.66 762 9.01 0.0603
2014-11-12 2014-09-30 13F COSTCO COM 22160K105 5,580 -480 -7.92 699 0.14 0.0599
2014-08-05 2014-06-30 13F/A-1 COSTCO COM 22160K105 6,060 -2,014 -24.94 698 -22.62 0.0604
2014-08-04 2014-06-30 13F COSTCO COM 22160K105 6,060 698
2014-05-07 2014-03-31 13F/A-1 COSTCO COM 22160K105 8,074 -5,337 -39.80 902 -43.48 0.0822
2014-05-06 2014-03-31 13F CAMPBL SOUP COM 22160K105 13,088 587
2014-02-03 2013-12-31 13F COSTCO COM 22160K105 13,411 -2,357 -14.95 1,596 -12.11 0.1554
2013-11-04 2013-09-30 13F COSTCO COM 22160K105 15,768 -489 -3.01 1,816 1.00 0.2031
2013-07-22 2013-06-30 13F COSTCO COM 22160K105 16,257 16,257 1,798 0.2245
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.