Innospec Inc. (IOSP) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for IOSP. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 273 institutions reported holding IOSP, with 24.6 million shares worth $2.0 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock | 4,381,323 | $357M | INCREASED |
| Vanguard | 3,190,643 | $260M | INCREASED |
| Allspring Global Investments Holdings | 1,892,471 | $155M | DECREASED |
| Dimensional Fund Advisors | 1,305,038 | $106M | INCREASED |
| State Street | 996,027 | $81M | INCREASED |
Full institutional holdings, insider history, and congressional trades for Innospec Inc. on SentiSense.