Innospec Inc. (IOSP) Stock Price History
Historical prices from 1998 to 2026
- 1M
- +1.4%
- 3M
- +16.5%
- YTD
- +26.0%
- 1Y
- +21.3%
- 3Y
- -1.9%
- 5Y
- +2.8%
Loading 10-year price history...
IOSP Historical Performance
IOSP Annual Returns
Year-by-year price performance · 2002–2026
- 2002 annual price return
- -10.2%
- 2003 annual price return
- +24.7%
- 2004 annual price return
- +0.3%
- 2005 annual price return
- -21.0%
- 2006 annual price return
- +177.8%
- 2007 annual price return
- -23.9%
- 2008 annual price return
- -65.6%
- 2009 annual price return
- +72.2%
- 2010 annual price return
- +98.6%
- 2011 annual price return
- +35.7%
- 2012 annual price return
- +22.0%
- 2013 annual price return
- +31.0%
- 2014 annual price return
- -6.6%
- 2015 annual price return
- +27.8%
- 2016 annual price return
- +30.9%
- 2017 annual price return
- +1.6%
- 2018 annual price return
- -13.3%
- 2019 annual price return
- +67.5%
- 2020 annual price return
- -12.5%
- 2021 annual price return
- +0.9%
- 2022 annual price return
- +9.9%
- 2023 annual price return
- +19.0%
- 2024 annual price return
- -9.9%
- 2025 annual price return
- -28.9%
- 2026 annual price return
- +12.7%
IOSP Stock Price Trajectory (1998–2026)
As of September 23, 2026, Innospec Inc. (IOSP) trades at $96.08, representing a +21.3% return over the past year. The stock has delivered a +23.8% total return over five years (+2.8% CAGR), reflecting significant long-term value creation.
The stock reached its all-time high of $133.71 on May 10, 2024. From this peak, IOSP has corrected -28.1%, currently trading 18% above its 200-day moving average, indicating continued institutional support.
When compared to Basic Materials sector peers HWKN (-27.7% 1Y), BCPC (+9.3% 1Y), and ITIC (+14.7% 1Y), IOSP has outperformed the peer group average. Compare IOSP vs HWKN →
IOSP Historical Price Data · from 1998
Rows 1–50 of 7,134| Date | Open | High | Low | Close | Volume | Change % |
|---|---|---|---|---|---|---|
| 2026-09-22 | 93.56 | 96.27 | 93.16 | 96.08 | 349K | +3.80% |
| 2026-09-21 | 93.18 | 93.25 | 92.37 | 92.56 | 150K | -0.63% |
| 2026-09-18 | 92.79 | 93.50 | 91.34 | 93.15 | 531K | -0.03% |
| 2026-09-17 | 93.11 | 93.68 | 92.32 | 93.18 | 183K | +0.27% |
| 2026-09-16 | 92.27 | 94.08 | 91.81 | 92.93 | 183K | +1.21% |
| 2026-09-15 | 91.96 | 92.23 | 91.00 | 91.82 | 260K | -0.15% |
| 2026-09-14 | 92.94 | 93.11 | 91.80 | 91.96 | 151K | -1.36% |
| 2026-09-11 | 93.34 | 93.83 | 92.63 | 93.23 | 80K | +0.16% |
| 2026-09-10 | 93.91 | 94.35 | 92.00 | 93.08 | 101K | -0.52% |
| 2026-09-09 | 93.19 | 94.05 | 92.68 | 93.57 | 127K | +0.21% |
| 2026-09-08 | 93.40 | 96.14 | 92.49 | 93.37 | 136K | -0.62% |
| 2026-09-04 | 92.99 | 94.32 | 92.39 | 93.95 | 103K | +0.89% |
| 2026-09-03 | 94.36 | 94.36 | 92.44 | 93.12 | 191K | -0.68% |
| 2026-09-02 | 93.49 | 95.38 | 92.56 | 93.76 | 144K | +1.24% |
| 2026-09-01 | 93.12 | 93.62 | 92.31 | 92.61 | 122K | -1.33% |
| 2026-08-31 | 95.12 | 95.70 | 93.56 | 93.86 | 156K | -1.59% |
| 2026-08-28 | 95.73 | 96.42 | 94.92 | 95.38 | 164K | +0.04% |
| 2026-08-27 | 94.48 | 96.41 | 94.11 | 95.34 | 194K | -0.33% |
| 2026-08-26 | 94.21 | 96.14 | 94.21 | 95.66 | 225K | +1.38% |
| 2026-08-25 | 94.73 | 94.78 | 93.14 | 94.36 | 180K | -0.39% |
| 2026-08-24 | 93.70 | 94.98 | 92.81 | 94.73 | 190K | +1.17% |
| 2026-08-21 | 93.71 | 93.88 | 92.76 | 93.63 | 120K | +0.76% |
| 2026-08-20 | 92.83 | 94.58 | 91.80 | 92.92 | 101K | -0.90% |
| 2026-08-19 | 94.47 | 95.01 | 93.06 | 93.76 | 108K | +0.21% |
| 2026-08-18 | 93.86 | 94.65 | 93.05 | 93.56 | 209K | -0.29% |
| 2026-08-17 | 93.08 | 94.18 | 93.07 | 93.83 | 182K | -0.02% |
| 2026-08-14 | 93.82 | 94.41 | 93.44 | 93.85 | 105K | -0.07% |
| 2026-08-13 | 93.54 | 94.67 | 93.28 | 93.92 | 126K | +0.86% |
| 2026-08-12 | 93.93 | 94.45 | 92.69 | 93.12 | 211K | -0.90% |
| 2026-08-11 | 93.22 | 94.56 | 92.55 | 93.97 | 206K | +1.16% |
| 2026-08-10 | 91.88 | 93.61 | 91.84 | 92.89 | 156K | +0.49% |
| 2026-08-07 | 91.67 | 92.61 | 89.65 | 92.44 | 163K | +0.99% |
| 2026-08-06 | 92.50 | 94.17 | 90.93 | 91.53 | 286K | -0.47% |
| 2026-08-05 | 90.28 | 93.34 | 88.05 | 91.96 | 392K | +6.07% |
| 2026-08-04 | 85.53 | 87.03 | 85.04 | 86.70 | 175K | +1.43% |
| 2026-08-03 | 86.22 | 87.85 | 85.42 | 85.48 | 155K | -0.58% |
| 2026-07-31 | 85.29 | 86.26 | 83.78 | 85.98 | 206K | -0.10% |
| 2026-07-30 | 85.28 | 86.50 | 84.66 | 86.07 | 141K | +1.32% |
| 2026-07-29 | 85.64 | 86.36 | 84.59 | 84.95 | 152K | -1.11% |
| 2026-07-28 | 86.38 | 87.69 | 85.66 | 85.90 | 134K | +0.32% |
| 2026-07-27 | 84.94 | 85.85 | 84.15 | 85.63 | 193K | +1.03% |
| 2026-07-24 | 84.63 | 85.39 | 83.77 | 84.76 | 159K | +0.80% |
| 2026-07-23 | 84.41 | 86.13 | 82.89 | 84.09 | 138K | -1.42% |
| 2026-07-22 | 84.63 | 85.72 | 84.21 | 85.30 | 140K | +0.95% |
| 2026-07-21 | 83.49 | 84.81 | 83.20 | 84.50 | 156K | +0.66% |
| 2026-07-20 | 83.98 | 84.54 | 83.05 | 83.95 | 117K | -0.36% |
| 2026-07-17 | 85.46 | 86.64 | 83.94 | 84.25 | 146K | -1.42% |
| 2026-07-16 | 83.17 | 85.58 | 83.17 | 85.46 | 184K | +2.94% |
| 2026-07-15 | 81.99 | 83.22 | 81.86 | 83.02 | 142K | +1.69% |
| 2026-07-14 | 82.39 | 82.85 | 81.45 | 81.64 | 103K | -0.48% |
IOSP Chart Terminal
Live VCP patterns, Cup & Handle overlays, support/resistance, and AI trade plans.
Live Breakouts Feed
High-probability breakout stocks crossing their pivot across 5 pattern engines.
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
10-year return with dividends reinvested.
Peer Comparison
Compare growth, multiples, and margins vs sector.
IOSP — Frequently Asked Questions
Quick answers to the most common questions about buying IOSP stock.
How has IOSP stock performed recently?
IOSP returned +21.3% over the past year, beating its 5-year annualized CAGR of +2.8%. The stock trades above its 200-day moving average, confirming the uptrend.
What is IOSP's all-time high price?
Innospec Inc. reached $133.71 on 2024-05-10. The 52-week high is $96.42. Current 1-year return of +21.3% places the stock closer to historical peaks.
Where can I download IOSP historical price data?
This page provides IOSP daily OHLCV data with 50-day MA, 200-day MA, and RSI indicators. Data spans 1998-2026, downloadable in CSV format.