Costco Wholesale Corporation
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionPacific Sun Financial Corp
Latest Disclosed Ownership1,133 shares
Latest Disclosed Value $ 1,128,955
Pacific Sun Financial Corp reports 2.91% increase in ownership of COST / Costco Wholesale Corporation

On May 7, 2026 - Pacific Sun Financial Corp filed a 13F-HR form disclosing ownership of 1,133 shares of Costco Wholesale Corporation (MX:COST) valued at $1,128,955 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 1,101 shares of Costco Wholesale Corporation. This represents a change in shares of 2.91% 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)
2026-05-07 2026-03-31 13F COSTCO WHOLESALE COM 22160K105 1,133 32 2.91 1,129 18.86 0.5467
2026-02-05 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 1,101 176 19.03 949 10.86 0.4572
2025-11-13 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 925 338 57.58 856 47.33 0.4137
2025-07-30 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 587 13 2.26 581 7.20 0.3035
2025-04-17 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 574 22 3.99 543 7.33 0.3088
2025-02-03 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 552 0 0.00 506 3.27 0.2755
2024-10-09 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 552 -30 -5.15 489 -1.01 0.2699
2024-07-19 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 582 3 0.52 495 16.51 0.2926
2024-05-02 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 579 -3 -0.52 424 10.42 0.2470
2024-02-08 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 582 0 0.00 384 17.07 0.2426
2024-01-11 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 582 13 2.28 329 16.31 0.2279
2023-07-12 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 569 11 1.97 283 11.02 0.1891
2023-02-14 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 558 -55 -8.97 255 -12.41 0.1795
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 613 -44 -6.70 290 -7.94 0.2037
2022-07-28 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 657 40 6.48 315 -11.27 0.2077
2022-05-05 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 617 4 0.65 355 2.01 0.1945
2022-02-10 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 613 0 0.00 348 26.55 0.1857
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 613 613 275 0.1580
2018-05-14 2018-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -1,709 -100.00 0 -100.00
2018-03-09 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 1,709 1,709 318 0.1742
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.