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© 2026 StockSpill. Data from SEC EDGAR filings. Logos by Parqet.

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Which superinvestors and politicians own COSTCO WHOLESALE CORP /NEW (COST)?

Explore more about COST

Valuation & analysis

  • COST DCF analysis
  • Free DCF calculator
  • Compound interest calculator

Smart-money holders

  • Superinvestors holding COST
  • Politicians trading COST
  • Insider buys & sells at COST

Most-watched investors

  • Warren Buffett
  • Leopold Aschenbrenner
  • George Soros
  • Ray Dalio
  • Bill Ackman

Other popular stocks

  • AAPL
  • NVDA
  • MSFT
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  • META

Last updated Aug 21, 2026

COSTCO WHOLESALE CORP /NEW (COST) — smart-money holders

COSTCO WHOLESALE CORP /NEW (COST) is a publicly traded company. This page tracks every superinvestor 13F holding, congressional stock trade, and Form 4 insider transaction in COST. Across our datasets, 9 superinvestors hold COST and 19 members of Congress have traded it.

Notable holders include Tom Gayner, Ray Dalio, and Thomas Russo. Active congressional traders include Ro Khanna, Scott Franklin, and Greg Landsman.

Key takeaways

  • 9 superinvestor holders.
  • 19 congressional traders.
  • 0 insider buys / 14 insider sells on file.