William John Sempolinski »

Costco Wholesale Corporation shares owned by William John Sempolinski

Quarter-by-quarter ownership of Costco Wholesale Corporation (COST) shares owned by William John Sempolinski from 13F filings

Historical chart of William John Sempolinski investment in Costco Wholesale Corporation

Tip: Access up to 7 years of quarterly data

All positions including Costco Wholesale Corporation held by William John Sempolinski consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Costco Wholesale Corporation by William John Sempolinski

Quarter filed Position value Share count Share price at filing
2026-03-31 $349k 350 996.43
2025-12-31 $259k 300 862.34

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Top funds holding Costco Wholesale Corporation

BlackRock
Vanguard Capital Management
State Street Corporation
Invesco
Geode Capital Management
Vanguard Portfolio Management
Morgan Stanley
Bank of America Corporation
Susquehanna International
Norges Bank Investment Management
FMR
Northern Trust
Royal Bank of Canada
Jpmorgan Chase & Co
Citadel Advisors

View all funds holding Costco Wholesale Corporation