COSTCO WHOLESALE CORP /NEW (COST)

Consumer Discretionary · Retail-Variety Stores

COSTCO WHOLESALE CORP /NEW (COST) stock research on InvestAtlant: institutional ownership from 13F filings, insider Form 4 activity, and SEC context.

Top institutional holders (2026-Q3)

InstitutionSharesValue% Outstanding
PRINCIPAL FINANCIAL GROUP INC 1,222,112 .11B 0.28%
Sumitomo Mitsui Trust Group, Inc. 1,032,165 $939.62M 0.23%
EVERETT HARRIS & CO /CA/ 731,934 $666.31M 0.17%
Swedbank AB 660,749 $601.51M 0.15%
Emerald Advisors, LLC 616,325 $561.07M 0.14%
PARNASSUS INVESTMENTS, LLC 559,687 $509.51M 0.13%
Assenagon Asset Management S.A. 501,309 $456.36M 0.11%
ProShare Advisors LLC 497,314 $452.72M 0.11%

Recent insider transactions

DateInsiderTitleTypeValue
2026-10-13 Wilcox William Richard Executive Vice President Sale .05M
2026-09-29 Frates Caton Sr. Executive Vice President Sale $733.3K
2026-09-29 Adamo Claudine Executive Vice President Sale $2.02M
2026-06-23 DENMAN KENNETH D Director Sale $847.3K
2026-04-01 Frates Caton Executive Vice President Sale $695.1K
2026-03-09 Adamo Claudine Executive Vice President Sale $732.2K
2026-01-21 Jones Teresa A. Executive Vice President Sale $838.3K
2026-01-16 DECKER SUSAN L Director Sale $437.4K

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Holdings from SEC 13F. Insider trades from Form 4. Congress from House and Senate PTRs. Real-time market prices via TradingView.