Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionTelos Capital Management, Inc.
Latest Disclosed Ownership14,756 shares
Latest Disclosed Value $ 14,702,892
Telos Capital Management, Inc. reports 10.63% increase in ownership of COST / Costco Wholesale Corporation

On April 16, 2026 - Telos Capital Management, Inc. filed a 13F-HR form disclosing ownership of 14,756 shares of Costco Wholesale Corporation (MX:COST) valued at $14,702,892 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 13,338 shares of Costco Wholesale Corporation. This represents a change in shares of 10.63% 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)
2026-04-16 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 14,756 1,418 10.63 14,703 27.83 1.4084
2026-01-22 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 13,338 1,630 13.92 11,502 6.13 1.0723
2025-11-04 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 11,708 932 8.65 10,837 1.59 1.0383
2025-08-05 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 10,776 358 3.44 10,668 8.26 1.0861
2025-04-30 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 10,418 -62 -0.59 9,853 2.61 1.0735
2025-01-27 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 10,480 -220 -2.06 9,602 1.23 1.0241
2024-10-21 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 10,700 -68 -0.63 9,486 3.64 0.9955
2024-08-01 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 10,768 -172 -1.57 9,152 14.20 1.0144
2024-04-25 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 10,940 -704 -6.05 8,015 4.28 0.9037
2024-01-31 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 11,644 -82 -0.70 7,686 16.02 0.9367
2023-11-01 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 11,726 400 3.53 6,624 8.64 0.9209
2023-07-21 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 11,326 3,474 44.24 6,098 56.29 0.8129
2023-04-27 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 7,852 -351 -4.28 3,902 4.19 0.5445
2023-01-27 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 8,203 696 9.27 3,745 5.58 0.5452
2022-10-31 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 7,507 5 0.07 3,546 -1.39 0.5836
2022-08-08 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 7,502 -141 -1.84 3,596 -18.29 0.5493
2022-05-02 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 7,643 -2,286 -23.02 4,401 -21.93 0.5715
2022-01-21 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 9,929 -258 -2.53 5,637 23.13 0.7047
2021-10-19 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 10,187 -115 -1.12 4,578 12.32 0.6266
2021-07-15 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 10,302 -171 -1.63 4,076 10.40 0.5394
2021-04-28 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 10,473 806 8.34 3,692 1.37 0.5304
2021-02-02 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 9,667 -227 -2.29 3,642 3.70 0.5550
2020-10-27 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 9,894 42 0.43 3,512 17.58 0.6132
2020-07-23 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 9,852 -242 -2.40 2,987 3.79 0.5781
2020-05-01 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 10,094 159 1.60 2,878 -1.44 0.7130
2020-01-23 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 9,935 1,231 14.14 2,920 16.43 0.6663
2019-10-31 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 8,704 -122 -1.38 2,508 7.50 0.6870
2019-07-19 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 8,826 -1,639 -15.66 2,333 -7.93 0.6836
2019-04-18 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 10,465 -258 -2.41 2,534 16.03 0.7898
2019-01-31 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 10,723 -174 -1.60 2,184 -14.69 0.8082
2018-10-26 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 10,897 -804 -6.87 2,560 4.66 0.8187
2018-07-27 2018-06-30 13F COSTCO WHSL CORP COM 22160K105 11,701 -243 -2.03 2,446 8.71 0.8425
2018-04-24 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 11,944 -16 -0.13 2,250 1.08 0.7996
2018-01-30 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 11,960 1,595 15.39 2,226 30.71 0.7857
2017-11-03 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 10,365 10,365 1,703 0.6572
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.