Costco Wholesale Corp (COST) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for COST. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 4,168 institutions reported holding COST, with 319.0 million shares worth $298.3 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Vanguard | 44,027,376 | $41.2B | DECREASED |
| BlackRock | 34,202,834 | $32.0B | DECREASED |
| State Street | 18,384,951 | $17.2B | INCREASED |
| Invesco Ltd | 13,989,137 | $13.1B | INCREASED |
| Geode Capital Management | 10,627,472 | $9.9B | DECREASED |
Recent Insider Trades
| Insider | Type | Shares | Value | Date |
|---|---|---|---|---|
| Claudine Adamo (Executive Vice President) | TAX-W | 108 | $111K | 2026-10-22 |
| Claudine Adamo (Executive Vice President) | TAX-W | 110 | $113K | 2026-10-22 |
| Claudine Adamo (Executive Vice President) | TAX-W | 177 | $180K | 2026-10-22 |
| Claudine Adamo (Executive Vice President) | TAX-W | 198 | $202K | 2026-10-22 |
| Claudine Adamo (Executive Vice President) | TAX-W | 96 | $99K | 2026-10-22 |
Recent Congressional Trades
| Member | Type | Amount | Date |
|---|---|---|---|
| Pete Sessions (Republican) | SALE | $100,001 - $250,000 | 2026-10-13 |
| Pete Sessions (Republican) | SALE | $250,001 - $500,000 | 2026-10-02 |
| Rick W. Allen (Republican) | SALE | $1,001 - $15,000 | 2026-09-18 |
Full institutional holdings, insider history, and congressional trades for Costco Wholesale Corp on SentiSense.