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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

COST

COSTCO WHOLESALE CORP /NEW

Superinvestors

Institutional investors holding COST

Consensus →
InvestorFundWeightSharesValueQuarter
Kenneth FisherFisher Asset Management1.09%3,219,856$3.2B2026Q1
Chuck AkreAkre Capital Management0.72%20,000$772K2002Q2
Ruane CunniffSequoia Fund0.66%440,162$70.5M2016Q4
Warren BuffettBerkshire Hathaway0.65%4,333,363$1.3B2020Q2
Viking Global InvestorsViking Global Investors0.58%964,600$69.7M2010Q4
Thomas GaynerMarkel Group0.55%115,000$4.2M2003Q2
Torray FundsTorray Investment Partners0.09%628$626K2026Q1
First Eagle Investment ManagementFirst Eagle Investment Management0.07%175,000$14.2M2011Q2
David KatzMatrix Asset Advisors0.05%559$557K2026Q1
Thomas RussoGardner Russo & Quinn0.05%4,624$4.6M2026Q1
Mairs & PowerMairs & Power Growth Fund0.03%2,963$3.0M2026Q1
Lee AinslieMaverick Capital0.03%2,894$2.5M2025Q4
Christopher DavisDavis Selected Advisers0.01%7,680$2.0M2019Q2
Meridian / ArrowMarkMeridian Contrarian Fund0.01%493$491K2026Q1
Francois RochonGiverny Capital0.01%240$207K2025Q4
Bill NygrenOakmark Select Fund – Harris Associates0.00%362$361K2026Q1
Dodge & CoxDodge & Cox0.00%2,700$222K2011Q3
Jensen Investment ManagementJensen Investment Management0.00%100$6K2009Q3

Congressional Activity

Congressional data coming soon

Insider Activity

5

Total trades

$3.7M

Volume

0

Buys

5

Sells

Last trade: Apr 1, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
Apr 1, 2026Javier PolitSell$695K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.