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The price of Innospec Inc. (IOSP) on October 9, 2026 is 95.65 USD, -2.09% on the day. Over 52 weeks the stock traded between 65.51 USD and 100.48 USD; the price now sits 86% of the way up that range. Over the past year the price changed by +21.85%. The P/E ratio is 20.7, which is close to the sector median (21.0). Market capitalization is 2.36 billion USD, rank 5 among 14 stocks of the same industry with a known capitalization.
Closing prices for 9 October 2026
Next earnings report: 3 November 2026 · Earnings calendar
Change over the period shown (line colour): +28.35 %
Innospec Inc. trades on Nasdaq under the ticker IOSP. The company belongs to the Materials sector. The trading history on this page starts on 22 August 2016.
Over the past 52 weeks IOSP has traded between 65.51 $ and 100.48 $. As of 9 October 2026 the price stood 86.19 % of the way from the 52-week low to the high.
Over one year IOSP shares rose 21.85 %; over six months they rose 26.42 %. Volatility over 90 days is 20.69 %. Dividends are not included: this is price change only, as of 9 October 2026.
IOSP trades at a price-to-earnings ratio of 20.7, below the sector median of 21.0. Price to sales is 1.3, below the sector median of 1.6. Price to book is 1.8, below the sector median of 2.1. Calculated from reports for the period ending 31 March 2026.
| Date | Open | High | Low | Close | Volume, shares |
|---|---|---|---|---|---|
| 9 October 2026 | 97.48 | 97.89 | 95.53 | 95.65 | 182,400 |
| 8 October 2026 | 97.05 | 98.49 | 96.06 | 97.69 | 181,200 |
| 7 October 2026 | 97.39 | 98.64 | 96.85 | 97.42 | 304,600 |
| 6 October 2026 | 98.27 | 99.22 |
The series is stated in the current share scale after splits; dividends are not included in the price
Based on the last 12 months of reports, through 31 March 2026
The sector median covers every company in the sector on the US market, loss-making ones included.
Innospec Inc. (IOSP) is a public company in the materials sector. Its common stock trade on NASDAQ.
Over the trailing twelve months as reported to 2026-03-31, revenue was 1.8bn $, net income was 114.2m $. Incorporated in US.
This summary is compiled automatically from SEC filings and exchange data.
Address:8310 SOUTH VALLEY HIGHWAY SUITE 350, ENGLEWOOD, CO, 80112, US
Innospec Inc. reported revenue of 1.8B $ and net income of 114M $ over the last four quarters. Net margin is 6.38 %. Revenue changed by +0.25 % year over year. Earnings per share are 4.58 $. Market capitalisation is 2.4B $.
IOSP has a return on equity of 8.49 %, above the sector median of 0.42 %. Return on assets is 6.28 %, above the sector median of −0.04 %. Operating margin is 6.90 %, in line with the sector median.
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| 97.32 |
| 98.55 |
| 233,600 |
| 5 October 2026 | 97.62 | 98.60 | 96.72 | 97.65 | 193,400 |
| 2 October 2026 | 96.43 | 98.67 | 95.44 | 97.41 | 196,500 |
| 1 October 2026 | 94.83 | 95.69 | 93.64 | 95.17 | 330,600 |
| 30 September 2026 | 97.16 | 97.24 | 95.09 | 95.32 | 226,400 |
| 29 September 2026 | 97.56 | 98.09 | 96.11 | 96.72 | 185,200 |
| 28 September 2026 | 98.72 | 100.48 | 97.58 | 97.88 | 300,000 |
| 25 September 2026 | 97.10 | 98.77 | 96.87 | 98.72 | 258,300 |
| 24 September 2026 | 96.61 | 97.50 | 95.76 | 96.87 | 211,700 |
| 23 September 2026 | 96.08 | 98.00 | 95.77 | 96.60 | 262,100 |
| 22 September 2026 | 93.52 | 96.40 | 92.59 | 96.08 | 349,800 |
| 21 September 2026 | 92.85 | 93.34 | 92.30 | 92.56 | 150,500 |
| 18 September 2026 | 92.79 | 94.05 | 91.55 | 93.15 | 535,700 |
| 17 September 2026 | 93.88 | 93.88 | 92.32 | 93.18 | 267,100 |
| 16 September 2026 | 92.27 | 94.08 | 91.11 | 92.93 | 186,200 |
| 15 September 2026 | 91.96 | 92.23 | 91.00 | 91.82 | 299,100 |
| 14 September 2026 | 93.33 | 93.33 | 91.80 | 91.96 | 152,900 |