Innospec Inc (IOSP)
Basic Materials
Specialty Chemicals
86.00 $
Closing price · As of: 31. Jul 2026
Who owns Innospec Inc (IOSP)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 98.7% of the shares are freely tradable; institutional investors hold 104.7%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
104.7%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
98.7%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
2.3%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
25Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.75 | 3,878,975 | +5.9 | 03/31/2026 |
| Vanguard Group Inc | 12.67 | 3,121,151 | -0.7 | 12/31/2025 |
| Allspring Global Investments Holdings, LLC | 9.40 | 2,315,942 | -1.7 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 7.55 | 1,860,091 | +0.0 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 5.04 | 1,242,089 | +5.7 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.53 | 1,114,598 | +0.0 | 03/31/2026 |
| State Street Corp | 3.92 | 964,335 | +1.6 | 03/31/2026 |
| Victory Capital Management Inc. | 3.51 | 864,994 | -9.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 6.10 | 1,501,822 | +0.0 | 05/29/2026 |
| Allspring Special Small Cap Value A | 5.54 | 1,364,799 | -8.1 | 05/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.