Innospec Inc. (IOSP)
CHEMICALS & ALLIED PRODUCTS
Innospec Inc. (IOSP) is listed on Nasdaq, where it has traded since May 13, 1998.
- Listed On
- Nasdaq
- Listed Since
- May 13, 1998
- Employees
- 2,450
- Market Cap
- $2.4B
About Innospec Inc.
Innospec Inc manufactures and sells a variety of chemicals and fuel additives. The firm organizes itself into three segments based on product type. The Performance Chemicals segment that derives maximum revenue, provides technology-based solutions for its customers' processes or products in personal care, home care, agrochemical, construction, mining and other industrial markets. The Fuel Specialties segment develops, manufactures, blends, markets and supplies a range of specialty chemical products used as additives in diesel, jet, marine, fuel oil and other fuels. The Oilfield Services segment develops and markets chemical solutions for drilling, completion, production, DRA and oil and gas applications.
Institutional ownership
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. The largest reported holder was BlackRock, with 4.4 million shares worth $356.6 million. Of the 5 largest holders listed below, 4 added shares and 1 reduced its position during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| BlackRock | 4,381,323 | $357M | Added 12.95% |
| Vanguard | 3,190,643 | $260M | Added 0.63% |
| Allspring Global Investments Holdings | 1,892,471 | $155M | Reduced 18.29% |
| Dimensional Fund Advisors | 1,305,038 | $106M | Added 5.07% |
| State Street | 996,027 | $81M | Added 3.29% |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is IOSP?
Innospec Inc. (IOSP) is listed on Nasdaq, where it has traded since May 13, 1998.
Who are the largest institutional holders of IOSP?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of IOSP were BlackRock, Vanguard and Allspring Global Investments Holdings.
How many institutions own IOSP?
273 institutions reported a position in IOSP for the quarter ended June 30, 2026, worth $2.0 billion in total.
Did institutions buy or sell IOSP last quarter?
Of the 5 largest reported holders, 4 added shares and 1 reduced its position during the quarter. Every reported holder and its change is on the SentiSense ownership page for IOSP.
Every reported institutional holder, plus insider and congressional trades in IOSP, on SentiSense.