Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionTriangle Securities Wealth Management
Latest Disclosed Ownership2,068 shares
Latest Disclosed Value $ 2,060,617
Triangle Securities Wealth Management reports 3.25% increase in ownership of COST / Costco Wholesale Corporation

On April 20, 2026 - Triangle Securities Wealth Management filed a 13F-HR form disclosing ownership of 2,068 shares of Costco Wholesale Corporation (MX:COST) valued at $2,060,617 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 2,003 shares of Costco Wholesale Corporation. This represents a change in shares of 3.25% 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)
2026-04-20 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 2,068 65 3.25 2,061 19.28 0.4677
2026-01-13 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 2,003 568 39.58 1,727 30.05 0.3642
2025-10-15 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 1,435 800 125.98 1,328 111.46 0.3007
2025-07-10 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 635 0 0.00 629 4.67 0.1547
2025-04-10 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 635 27 4.44 601 7.72 0.1545
2025-01-15 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 608 -15 -2.41 557 0.91 0.1429
2024-11-14 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 623 -5 -0.80 552 3.56 0.1427
2024-07-10 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 628 0 0.00 534 15.87 0.1507
2024-04-10 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 628 -2 -0.32 460 10.84 0.1311
2024-01-10 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 630 0 0.00 416 16.90 0.1293
2023-10-10 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 630 35 5.88 356 10.94 0.1266
2023-07-13 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 595 0 0.00 320 8.47 0.1102
2023-04-20 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 595 4 0.68 296 9.67 0.1057
2023-01-11 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 591 0 0.00 270 -3.58 0.0989
2022-10-19 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 591 0 0.00 279 -1.41 0.1140
2022-07-11 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 591 0 0.00 283 -16.76 0.1103
2022-04-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 591 0 0.00 340 1.19 0.1138
2022-01-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 591 7 1.20 336 28.24 0.1052
2021-10-14 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 584 0 0.00 262 13.42 0.0889
2021-07-12 2021-06-30 13F COSTCO WHSL CORP COM 22160K105 584 0 0.00 231 12.14 0.0781
2021-04-12 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 584 8 1.39 206 -5.07 0.0745
2021-01-11 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 576 0 0.00 217 6.37 0.0859
2020-10-09 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 576 576 204 0.0922
2020-04-06 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -740 -100.00 0 -100.00
2020-01-09 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 740 0 0.00 218 2.35 0.0945
2019-10-15 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 740 -125 -14.45 213 -8.58 0.1041
2019-07-10 2019-06-30 13F COSTCO WHSL CORP COM 22160K105 865 15 1.76 233 13.11 0.1184
2019-04-10 2019-03-31 13F/A-1 COSTCO WHSL CORP COM 22160K105 850 850 206 0.1080
2019-04-08 2019-03-31 13F COSTCO WHSL CORP COM 22160K105 850 206
2013-10-08 2013-09-30 13F COSTCO WHSL CORP COM 22160K105 0 -300 -100.00 0 -100.00
2013-07-10 2013-06-30 13F COSTCO WHSL CORP COM 22160K105 300 300 33 0.0244
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.