IOSP
Innospec
PE ratio, current and historical analysis
- Stocks
- Basic Materials
- NASDAQ: IOSP
- PE Ratio
As of Jun 22, 2026, the Innospec stock's P/E ratio is 17.93. This takes into account the latest EPS of $4.6 and stock price of $82.47.
IOSP PE ratio history
The PE ratio of Innospec has averaged 31.47 over the last ten years. The current price-to-earnings ratio of 17.93 is 43% less than the historical average. Analyzing the last ten years, IOSP's PE ratio reached its highest point in the Mar 2021 quarter at 133.36, when the price was $102.69 and the EPS was $0.77. The lowest point was recorded in the Jun 2016 quarter, when it reached 9.58 with a price of $45.99 and an EPS of $4.8.
Innospec PE ratio by year
Maximum annual increase: 249.7% in 2024
Maximum annual decrease: -78.8% in 2025
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| 2025 | 16.32 | -78.8% | $76.54 | $4.69 |
| 2024 | 76.97 | 249.7% | $110.06 | $1.43 |
| 2023 | 22.01 | 14.93% | $123.24 | $5.6 |
| 2022 | 19.15 | -19.87% | $102.86 | $5.37 |
| 2021 | 23.9 | -69.18% | $90.34 | $3.78 |
| 2020 | 77.55 | 243.29% | $90.73 | $1.17 |
| 2019 | 22.59 | 27.27% | $103.44 | $4.58 |
| 2018 | 17.75 | -35.64% | $61.76 | $3.48 |
| 2017 | 27.58 | 36.47% | $70.6 | $2.56 |
| 2016 | 20.21 | 84.57% | $68.5 | $3.39 |
| 2015 | 10.95 | -11.55% | $54.31 | $4.96 |
| 2014 | 12.38 | -11.89% | $42.7 | $3.45 |
| 2013 | 14.05 | 17.77% | $46.22 | $3.29 |
| 2012 | 11.93 | -15.03% | $34.49 | $2.89 |
| 2011 | 14.04 | 113.37% | $28.07 | $2 |
Innospec PE ratio by quarter (TTM)
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| Mar 2026 | 15.87 | -2.76% | $73.02 | $4.6 |
| Dec 2025 | 16.32 | N/A | $76.54 | $4.69 |
| Sep 2025 | N/A | N/A | $77.16 | -$0.05 |
| Jun 2025 | 109.21 | 24.48% | $84.09 | $0.77 |
| Mar 2025 | 87.73 | 13.98% | $94.75 | $1.08 |
| Dec 2024 | 76.97 | 292.7% | $110.06 | $1.43 |
| Sep 2024 | 19.6 | -4.67% | $113.09 | $5.77 |
| Jun 2024 | 20.56 | -5.6% | $123.59 | $6.01 |
| Mar 2024 | 21.78 | -1.04% | $128.94 | $5.92 |
| Dec 2023 | 22.01 | 10.05% | $123.24 | $5.6 |
| Sep 2023 | 20 | 1.37% | $102.2 | $5.11 |
| Jun 2023 | 19.73 | 0.51% | $100.44 | $5.09 |
| Mar 2023 | 19.63 | 2.51% | $102.67 | $5.23 |
| Dec 2022 | 19.15 | 18.5% | $102.86 | $5.37 |
| Sep 2022 | 16.16 | -20.86% | $85.67 | $5.3 |
IOSP Price vs fair value
IOSP average PE ratio chart
What this chart measures
The Historical Valuation Regime chart shows where the stock's current valuation sits relative to its own historical valuation range over the selected lookback period.
This is a history-relative tool, not a market-relative percentile. It does not compare the stock to other companies. Instead, it compares each historical valuation reading to the stock's own past readings.
Percentile logic
The threshold lines are calculated them from the stock's real historical values using percentile interpolation. That is why some colored bands are narrow while others are wide: the band widths reflect how the stock actually traded through time.
Regime map
| Historical percentile | Regime | Chart meaning |
|---|---|---|
| 0-10 | Historically Low | Deep cheap zone |
| >10-25 | Below Average | Cheap relative to history |
| >25-75 | Average | Within the normal historical range |
| >75-90 | Above Average | Expensive relative to history |
| >90-100 | Historically High | Extreme or stretched valuation |
How to read each part
| Chart element | What it tells you |
|---|---|
| Main line | The actual historical valuation values over time for the selected metric. |
| Dashed horizontal lines | The stock's computed P10, P25, Median, P75, and P90 thresholds for the selected period. |
| Colored bands | The historical valuation zones between those thresholds. |
| Metric boxes | Current ratio, historical median, current percentile, and current regime. |
| Timeline strip | A condensed regime history showing how the stock moved between cheap, fair, and expensive states across each observation. |
Important metric definitions
Current Percentile is the percentile rank of the latest valid historical observation within the selected lookback range.
Current Regime is assigned directly from the latest observation's percentile bucket using the fixed 10 / 25 / 75 / 90 cutoffs shown above.
How to use it well
This chart is most useful for answering a narrow question: Is this stock trading high, low, or normal relative to its own history? It works best alongside growth, profitability, and forward-looking business analysis, because a stock can deserve a higher or lower regime if its business quality has changed.
The current PE ratio of IOSP is under its 3, 5 and 10-year averages.
PE comparison
With a price to earnings (P/E) of 17.93, IOSP stands lower than the Basic Materials sector and the industry average. Looking at the Basic Materials sector average of 21.67, Innospec's price to earnings (P/E) is 17% lower.
IOSP PE vs peers
IOSP's PE ratio is less than its peer stock SXT, but it is above NEU's.
| Stock name | PE ratio | Market cap |
|---|---|---|
| IOSP Innospec Inc | 17.79 | $2.02B |
| NEU Newmarket Corp | 17.9 | $7.21B |
| SXT Sensient Technologies Corp | 34.92 | $5.05B |
| ALB Albemarle Corp | N/A | $17.69B |
| HUN Huntsman CORP | N/A | $2B |
| NTIC Northern Technologies International Corp | N/A | $78.31M |
Frequently asked questions
What is Innospec's PE ratio?
The price to earnings ratio for IOSP stock is 17.93 as of Jun 22, 2026.
What is the 3-year average PE ratio for Innospec (IOSP)?
The 3-year average PE ratio for IOSP stock is 39.07.
What is the 5-year average PE ratio for Innospec (IOSP)?
The 5-year average PE ratio for IOSP stock is 31.61.
What is the highest PE ratio for IOSP?
Over the last ten years, the Mar 2021 quarter recorded the highest quarterly PE ratio at 133.36.
How does the current PE ratio for IOSP compare to its historical average?
IOSP's price to earnings ratio is currently 43% below its 10-year historical average.
How is IOSP's PE ratio calculated (Innospec PE ratio formula)?
The P/E ratio is calculated by dividing the latest price of a stock by its trailing twelve months EPS. As of today (Jun 22, 2026), Innospec's share price is $82.47. The company's earnings per share for the trailing twelve months (TTM) ending Mar 2026 is $4.6. Therefore, Innospec's price to earnings ratio for today is 17.93. PE RATIO(17.93) = STOCK PRICE($82.47) / TTM EPS($4.6)
All PE ratio stats are based on quarterly TTM periods, unless otherwise specified.