Costco Wholesale Corporation
US ˙ NasdaqGS ˙ US22160K1051

SecurityCOST / Costco Wholesale Corporation
InstitutionTrexquant Investment LP
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Trexquant Investment LP closes position in COST / Costco Wholesale Corporation

On May 15, 2026 - Trexquant Investment LP filed a 13F-HR form disclosing ownership of 0 shares of Costco Wholesale Corporation (US:COST) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 78,408 shares of Costco Wholesale Corporation. The current value of the position is $0 USD.

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)
2026-05-15 2026-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -100.00 0
2026-02-17 2025-12-31 13F COSTCO WHSL CORP COM 22160K105 78,408 -53,716 -40.66 67,614 -44.71 0.6028
2025-11-14 2025-09-30 13F COSTCO WHSL CORP COM 22160K105 132,124 70,941 115.95 122,298 101.92 1.2590
2025-08-12 2025-06-30 13F COSTCO WHSL CORP COM 22160K105 61,183 61,183 60,567 0.6831
2025-05-14 2025-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -17,278 -100.00 0 -100.00
2025-02-12 2024-12-31 13F COSTCO WHSL CORP COM 22160K105 17,278 -12,540 -42.06 15,831 -40.11 0.1845
2024-11-12 2024-09-30 13F COSTCO WHSL CORP COM 22160K105 29,818 11,599 63.66 26,434 70.71 0.3346
2024-08-13 2024-06-30 13F COSTCO WHSL CORP COM 22160K105 18,219 18,219 15,486 0.2362
2024-05-14 2024-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -47,095 -100.00 0 -100.00
2024-02-09 2023-12-31 13F COSTCO WHSL CORP COM 22160K105 47,095 -11,751 -19.97 31,086 -6.49 0.6995
2023-11-13 2023-09-30 13F COSTCO WHSL CORP COM 22160K105 58,846 47,256 407.73 33,246 432.86 0.8341
2023-08-11 2023-06-30 13F COSTCO WHSL CORP COM 22160K105 11,590 11,590 6,240 0.1636
2023-05-15 2023-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -56,204 -100.00 0 -100.00
2023-02-13 2022-12-31 13F COSTCO WHSL CORP COM 22160K105 56,204 56,204 25,657 0.7275
2022-11-14 2022-09-30 13F COSTCO WHSL CORP COM 22160K105 0 -589 -100.00 0 -100.00
2022-08-11 2022-06-30 13F COSTCO WHSL CORP COM 22160K105 589 -20,386 -97.19 282 -97.67 0.0126
2022-05-13 2022-03-31 13F COSTCO WHSL CORP COM 22160K105 20,975 11,239 115.44 12,078 118.53 0.5673
2022-02-14 2021-12-31 13F COSTCO WHSL CORP COM 22160K105 9,736 -6,681 -40.70 5,527 -25.08 0.3414
2021-11-12 2021-09-30 13F COSTCO WHSL CORP COM 22160K105 16,417 16,417 7,377 0.5861
2021-05-13 2021-03-31 13F COSTCO WHSL CORP COM 22160K105 0 -15,024 -100.00 0 -100.00
2021-02-11 2020-12-31 13F COSTCO WHSL CORP COM 22160K105 15,024 -7,799 -34.17 5,661 -30.13 0.5996
2020-11-06 2020-09-30 13F COSTCO WHSL CORP COM 22160K105 22,823 22,823 8,102 0.5213
2020-08-07 2020-06-30 13F COSTCO WHSL CORP COM 22160K105 0 -7,478 -100.00 0 -100.00
2020-05-08 2020-03-31 13F COSTCO WHSL CORP COM 22160K105 7,478 7,478 2,132 0.1547
2020-02-12 2019-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -27,441 -100.00 0 -100.00
2020-02-18 2019-09-30 13F/A-1 COSTCO WHSL CORP COM 22160K105 27,441 27,441 7,906 0.6828
2019-11-08 2019-09-30 13F COSTCO WHSL CORP COM 22160K105 27,441 27,441 7,906 682,820.8291
2019-02-13 2018-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -39,878 -100.00 0 -100.00
2018-11-09 2018-09-30 13F COSTCO WHSL CORP COM 22160K105 39,878 39,878 9,367 0.7042
2018-02-08 2017-12-31 13F COSTCO WHSL CORP COM 22160K105 0 -2,478 -100.00 0 -100.00
2017-11-09 2017-09-30 13F COSTCO WHSL CORP COM 22160K105 2,478 2,478 407 0.1025
2016-05-11 2016-03-31 13F COSTCO WHSL CORP COM 22160K105 0 0 0 0.0000
2015-11-02 2015-09-30 13F COSTCO WHSL CORP COM 22160K105 0 -11,800 -100.00 0 -100.00
2015-08-12 2015-06-30 13F COSTCO WHSL CORP COM 22160K105 11,800 11,800 1,593 0.1789
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.