코스트코 도매공사
MX ˙ BMV ˙ US22160K1051
SecurityMX:COST / Costco Wholesale Corporation
InstitutionSt Germain D J Co Inc
Latest Disclosed Ownership7,471 shares
Latest Disclosed Value $ 7,444,329
St Germain D J Co Inc reports 2.12% decrease in ownership of COST / Costco Wholesale Corporation

On April 13, 2026 - St Germain D J Co Inc filed a 13F-HR form disclosing ownership of 7,471 shares of Costco Wholesale Corporation (MX:COST) valued at $7,444,329 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 7,633 shares of Costco Wholesale Corporation. This represents a change in shares of -2.12% 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)
2026-04-13 2026-03-31 13F COSTCO WHOLESALE CORPORATION COM Stock 22160K105 7,471 -162 -2.12 7,444 13.10 0.2946
2026-01-29 2025-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,633 -153 -1.97 6,582 -8.66 0.2556
2025-10-07 2025-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,786 25 0.32 7,207 -6.20 0.2883
2025-07-16 2025-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,761 88 1.15 7,683 5.87 0.3313
2025-04-09 2025-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,673 322 4.38 7,257 7.74 0.3411
2025-01-10 2024-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,351 -76 -1.02 6,736 2.29 0.3061
2024-10-18 2024-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,427 -173 -2.28 6,584 1.94 0.3026
2024-07-08 2024-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,600 -84 -1.09 6,460 14.75 0.3126
2024-04-02 2024-03-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,684 15 0.20 5,630 11.20 0.2751
2024-01-02 2023-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,669 133 1.76 5,062 18.91 0.2637
2023-10-23 2023-09-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,536 0 0.00 4,258 4.93 0.2393
2023-09-07 2023-06-30 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,536 18 0.24 4,057 31,107.69 0.2143
2023-02-27 2022-12-31 13F COSTCO WHSL CORP NEW COM Stock 22160K105 7,518 -195 -2.53 13 -99.65 0.0044
2022-11-21 2022-09-30 13F Costco Warehouse COM 22160K105 7,713 0 0.00 3,697 0.00 0.2442
2022-08-15 2022-06-30 13F/A-1 Costco Warehouse COM 22160K105 7,713 -2 -0.03 3,697 -16.79 0.2442
2022-08-12 2022-06-30 13F Costco Warehouse COM 22160K105 7,715 0 4,443 0.2499
2022-05-12 2022-03-31 13F Costco Warehouse COM 22160K105 7,715 -25 -0.32 4,443 1.12 0.2499
2022-02-11 2021-12-31 13F Costco Warehouse COM 22160K105 7,740 192 2.54 4,394 29.54 0.2416
2021-11-03 2021-09-30 13F Costco Warehouse COM 22160K105 7,548 -30 -0.40 3,392 13.14 0.2089
2021-07-28 2021-06-30 13F Costco Warehouse COM 22160K105 7,578 27 0.36 2,998 12.62 0.1881
2021-05-13 2021-03-31 13F Costco Warehouse COM 22160K105 7,551 -24 -0.32 2,662 -6.73 0.1799
2021-02-04 2020-12-31 13F Costco Warehouse COM 22160K105 7,575 174 2.35 2,854 8.64 0.2037
2020-11-10 2020-09-30 13F Costco Warehouse COM 22160K105 7,401 0 0.00 2,627 17.07 0.2131
2020-08-13 2020-06-30 13F Costco Warehouse COM 22160K105 7,401 83 1.13 2,244 7.52 0.1965
2020-05-13 2020-03-31 13F Costco Warehouse COM 22160K105 7,318 -24 -0.33 2,087 -3.29 0.2052
2020-02-14 2019-12-31 13F Costco Warehouse COM 22160K105 7,342 0 0.00 2,158 2.03 0.1812
2019-10-17 2019-09-30 13F Costco Warehouse COM 22160K105 7,342 7,342 2,115 0.2275
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.