ValuationViz

COST fund manager activity

Costco Wholesale Corporation · Nasdaq. Reported by 19 tracked fund managers in their 13F filings, Q2 2013 to Q3 2026.

Q3 2026

ManagerActivitySharesValue% of portfolioFiled
David Katz - Matrix Asset AdvisorsNo change551$501,4090.04%Oct 13, 2026

Q2 2026

ManagerActivitySharesValue% of portfolioFiled
Ron Baron - Baron CapitalTrimmed5,569$5,209,6320.01%Aug 14, 2026
Ken Fisher - Fisher Asset ManagementAdded3,253,040$3,043,122,6330.91%Aug 4, 2026
Jeremy Grantham - GMOAdded232$217,0290.00%Aug 13, 2026
Thomas Russo - Gardner Russo & QuinnTrimmed3,399$3,179,7090.04%Aug 13, 2026
Joel Greenblatt - Gotham Asset ManagementAdded24,136$22,578,5040.05%Aug 14, 2026
Mairs & Power FundsNo change2,963$2,771,7980.03%Aug 14, 2026
Thomas Gayner - Markel GroupNo change39,150$36,623,6510.28%Jul 31, 2026
David Katz - Matrix Asset AdvisorsTrimmed551$515,1370.04%Jul 15, 2026
Bill Nygren - Oakmark FundsTrimmed358$334,8980.00%Aug 14, 2026
Christopher Bloomstran - Semper AugustusTrimmed3,354$3,137,5660.35%Aug 14, 2026
Torray FundsNo change628$587,4750.08%Jul 30, 2026

Older quarters