Innospec
IOSP · NASDAQ
$99.16+$1.17 (+1.19%)TodayMarket closed ·
Prev close $97.99
Who owns IOSP
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 53.9% of IOSP’s shares.
- BlackRock Institutional Trust Company, N.A.14.7%
- Allspring Global Investments, LLC7.7%
- Vanguard Portfolio Management, LLC7.7%
- Dimensional Fund Advisors, L.P.5.3%
- Next 6 largest institutions18.6%
- All other shareholders46.1%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 3.61M | 14.67% |
| Allspring Global Investments, LLC | 1.89M | 7.68% |
| Vanguard Portfolio Management, LLC | 1.88M | 7.65% |
| Dimensional Fund Advisors, L.P. | 1.31M | 5.30% |
| Vanguard Capital Management, LLC | 1.11M | 4.50% |
| State Street Investment Management (US) | 996.03K | 4.04% |
| Geode Capital Management, L.L.C. | 666.59K | 2.71% |
| Victory Capital Management Inc. | 660.11K | 2.68% |
| Nuveen LLC | 570.44K | 2.32% |
| Two Sigma Investments, LP | 568.71K | 2.31% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Core S&P Small-Cap ETF | 1.50M | 6.09% |
| Allspring Special Small Cap Val Fd | 1.11M | 4.50% |
| Vanguard Total Stock Market Index Fund | 786.94K | 3.20% |
| iShares Russell 2000 ETF | 650.95K | 2.64% |
| Victory Sycamore Small Company Opportunity Fund | 625.00K | 2.54% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of IOSP in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| BARNES CORBIN | Award | 2.64K | — |
| GRIFFIN HARDY LOUIS III | Award | 2.69K | — |
| Cleminson Ian | Award | 4.79K | — |
| MCROBBIE IAN MALCOLM | Award | 3.16K | — |
| Jones David B. | Award | 3.19K | — |
| Williams Patrick | Award | 22.20K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 492.11K
- Days to cover
- 1.87
- % of shares outstanding
- 2.00%
- Average daily volume
- 263.07K
- Change since last report
- −3.7%
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