COST Ownership
Costco Wholesale Corp - Institutional & insider holdings
Ownership Breakdown
Institutions
22+
Stock Price
$921.50
Top Institutional Holders
View All Holders →| Holder | Shares | Value | % Owned |
|---|---|---|---|
| Vanguard Group Inc | 43.62M | $39.97B | 983.60% |
| BlackRock Inc | 34.95M | $32.02B | 788.02% |
| State Street Corp | 18.15M | $16.63B | 409.31% |
| Geode Capital Management, LLC | 10.66M | $9.77B | 240.35% |
| Morgan Stanley - Brokerage Accounts | 9.90M | $9.07B | 223.21% |
| Invesco QQQ Trust | 9.62M | $8.82B | 216.99% |
| Bank of America Corp | 7.52M | $6.89B | 169.46% |
| CI Private Wealth LLC | 6.98M | $6.40B | 157.50% |
| Diamant Asset Management Inc | 6.73M | $6.16B | 151.68% |
| FMR Inc | 6.72M | $6.16B | 151.50% |
| NORGES BANK | 6.02M | $5.52B | 135.85% |
| iShares Core S&P 500 ETF | 5.85M | $5.36B | 131.87% |
| Fidelity 500 Index | 5.69M | $5.21B | 128.26% |
| Northern Trust Corp | 4.93M | $4.52B | 111.12% |
| Amvescap Plc. | 4.31M | $3.95B | 97.27% |
Recent Insider Trading
View All Insider Trades →↑Recent Buys (5)
DENMAN KENNETH D
Insider
2026-06-23
Frates Caton
Executive Vice President
2026-04-01
George Sarah Catherine
Executive Vice President
2026-03-12
MILLERCHIP GARY
Executive Vice President
2026-03-11
Adamo Claudine
Executive Vice President
2026-03-09
↓Recent Sells (0)
No recent insider sales
Understanding Stock Ownership
Institutional Ownership
Large investors like hedge funds and mutual funds that manage $100M+ must disclose their holdings quarterly via 13F filings. High institutional ownership often indicates strong fundamentals.
Insider Ownership
Company executives and directors must report their trades via SEC Form 4. Insider buying can signal confidence, while selling may occur for various reasons including diversification.
Why It Matters
Ownership structure reveals who believes in the company. Institutional investors conduct deep research, while insider buying shows internal confidence. Track ownership changes for investment signals.
Data Sources
Institutional data from SEC 13F filings (quarterly), insider trades from Form 4 filings (within 2 business days), and company proxy statements (annual ownership disclosures).
Get Full COST Analysis
AI insights, financials, valuation, and complete ownership tracking
View Complete AnalysisFrequently Asked Questions
Who owns COST?
COST (Costco Wholesale Corp) is owned by institutional investors (multiple), company insiders (various holdings), and retail investors. The largest institutional holders are disclosed in quarterly SEC 13F filings.
What is COST institutional ownership?
COST has significant institutional ownership from hedge funds, mutual funds, and investment firms. Check the holdings table above for detailed data.
What is COST insider ownership?
Company insiders hold shares of COST. Insider trading activity is tracked through SEC Form 4 filings.
Are COST insiders buying or selling?
Recent insider activity shows 5 buy transactions ($4.06M) and 0 sell transactions ($0). Insider buying exceeds selling, which could be a positive signal.