Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionEdgestream Partners, L.P.
Latest Disclosed Ownership2,695 shares
Latest Disclosed Value $ 2,685,379
Edgestream Partners, L.P. reports 118.04% increase in ownership of COST / Costco Wholesale Corporation

On May 18, 2026 - Edgestream Partners, L.P. filed a 13F-HR form disclosing ownership of 2,695 shares of Costco Wholesale Corporation (MX:COST) valued at $2,685,379 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,236 shares of Costco Wholesale Corporation. This represents a change in shares of 118.04% 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)
2026-05-18 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 2,695 1,459 118.04 2,685 152.11 0.0881
2026-02-13 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 1,236 -916 -42.57 1,066 -46.51 0.0300
2025-11-12 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 2,152 -4,222 -66.24 1,992 -68.44 0.0582
2025-08-13 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 6,374 2,010 46.06 6,310 52.87 0.1755
2025-05-02 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 4,364 -996 -18.58 4,127 -15.96 0.1401
2025-02-07 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 5,360 1,940 56.73 4,911 62.03 0.2092
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 3,420 -4,870 -58.75 3,032 -56.98 0.1333
2024-08-09 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 8,290 -414 -4.76 7,046 10.51 0.3392
2024-05-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 8,704 4,982 133.85 6,377 159.61 0.3179
2024-02-14 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 3,722 3,197 608.95 2,457 729.73 0.1768
2023-11-15 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 525 -1,298 -71.20 297 -69.83 0.0236
2023-08-10 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 1,823 -6,517 -78.14 981 -76.32 0.0888
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 8,340 -2,222 -21.04 4,144 -14.06 0.4576
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 10,562 1,097 11.59 4,822 7.85 0.5421
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 9,465 5,398 132.73 4,470 129.35 0.3456
2022-08-12 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 4,067 -6,915 -62.97 1,949 -69.18 0.1536
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 10,982 -1,378 -11.15 6,324 -9.88 0.5035
2022-02-15 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 12,360 1,431 13.09 7,017 42.88 0.4373
2021-11-15 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 10,929 10,929 4,911 0.3035
2021-08-10 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 0 -17,393 -100.00 0 -100.00
2021-05-06 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 17,393 5,849 50.67 6,131 40.94 0.3424
2021-02-11 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 11,544 11,544 4,350 0.2186
2020-11-10 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 0 -54,715 -100.00 0 -100.00
2020-08-11 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 54,715 28,658 109.98 16,590 123.28 0.8721
2020-05-14 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 26,057 -10,673 -29.06 7,430 -31.18 0.6868
2020-02-13 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 36,730 25,369 223.30 10,796 229.85 0.5607
2019-11-08 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 11,361 9,822 638.21 3,273 704.18 0.3131
2019-08-08 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 1,539 -18,792 -92.43 407 -91.73 0.0459
2019-05-15 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 20,331 20,331 4,923 0.7223
2017-08-10 2017-06-30 13F COSTCO WHSL CORP COM 22160K105 0 -2,304 -100.00 0 -100.00
2017-05-15 2017-03-31 13F COSTCO WHSL CORP COM 22160K105 2,304 748 48.07 386 55.02 0.1701
2017-02-14 2016-12-31 13F COSTCO WHSL CORP COM 22160K105 1,556 1,556 249 0.5168
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.