InnospecIOSP +1.63%76 ROC (Joel Greenblatt) % is 17.75% as of Mar. 2026, which is 41% below its 10-year median of 29.95. GuruFocus rates IOSP with a GF Score™ of 76/100 and a GF Value™ of $94.76 (Modestly Undervalued). The stock has 3 warning signs investors should review. Among 1,601 Chemicals companies, Innospec ranks better than 76.76% on this metric.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits). He defines ROC (Joel Greenblatt) % as EBIT divided by the total of Property, Plant and Equipment and net working capital. Innospec's annualized ROC (Joel Greenblatt) % for the quarter that ended in Mar. 2026 was 17.75%.
The historical rank and industry rank for Innospec's ROC (Joel Greenblatt) % or its related term are showing as below:
IOSP'
s ROC (Joel Greenblatt) % Range Over the Past 10 Years
Min: 8.6 Med: 29.95 Max: 41.44
Current: 20.59
During the past 13 years, Innospec's highest ROC (Joel Greenblatt) % was 41.44%. The lowest was 8.60%. And the median was 29.95%.
IOSP's ROC (Joel Greenblatt) % is ranked better than 76.76% of 1601
companies
in the Chemicals industry
Industry Median: 9.38
vs IOSP: 20.59
Innospec's 5-Year average Growth Rate of ROC (Joel Greenblatt) % was 15.40% per year.
The way Joel Greenblatt defines Return on Capital is a more accurate measure of how efficiently the company generates returns onthe capital actually invested in the business. EBIT is used instead of net income because the tax and interest payment may be affected by factors other than the core business operation. Intangible assets are not included in the calculation because they don't need to be replaced.
The historical data trend for Innospec's ROC (Joel Greenblatt) % can be seen below:
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
IOSP vs MTX, ODC, NGVT: ROC (Joel Greenblatt) % Comparison
For the Specialty Chemicals subindustry, Innospec's ROC (Joel Greenblatt) %, along with its competitors' market caps and ROC (Joel Greenblatt) % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Innospec ROC (Joel Greenblatt) % vs Chemicals Industry
For the Chemicals industry and Basic Materials sector, Innospec's ROC (Joel Greenblatt) % distribution charts can be found below:
* The bar in red indicates where Innospec's ROC (Joel Greenblatt) % falls into.
Joel Greenblatt defined Return on Capital differently in his book The Little Book That Still Beats the Market (Little Books. Big Profits) . He defines Return on Capital as follows:
EBIT stands for Earnings Before Interest and Taxes.
Fixed Assets are also known as non-current assets. They include the Property, Plant and Equipment that the firm needs in its operation.
GuruFocus calculates net working capital as: (Accounts Receivable + Total Inventories + Other Current Assets) - (Accounts Payable & Accrued Expense + Deferred Revenue + Other Current Liabilities). We're trying to account for OPERATING assets and liabilities (part of daily business) when calculating working capital. Cash and marketable securities are considered NON-OPERATING assets and are not included in calculation. We will also back out all interest bearing debt, short term debt and the portion of long term debt that is due in the current period from the current liabilities. This debt will be considered when computing cost of capital and it would be inappropriate to count it twice.
Note:
The EBIT data used here is four times the quarterly (Mar. 2026) EBIT data.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
What does a ROC (Joel Greenblatt) % of 17.75% mean?
Innospec (IOSP) has a ROC (Joel Greenblatt) % of 17.75% as of Mar. 2026. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Innospec and its competitors. This is 41% below median its historical median of 29.95. Over the past decade, Innospec's ROC (Joel Greenblatt) % has ranged from 8.60 to 41.44. According to the industry distribution chart, Innospec ranks #372 out of 1601 companies in the Chemicals industry, placing it in the top 23.2%.
Is Innospec's ROC (Joel Greenblatt) % too high?
Innospec's current ROC (Joel Greenblatt) % of 17.75% is 41% below median its 10-year median of 29.95. Over the past 10 years, this metric has ranged from a low of 8.60 to a high of 41.44. The Chemicals industry median ROC (Joel Greenblatt) % is 9.38. Innospec's value of 17.75% is 89.2% above this industry median. Based on the distribution chart, Innospec ranks #372 out of 1601 companies in the Chemicals industry, which is in the top quartile — a strong position relative to peers. Overall, Innospec has a GF Score™ of 76/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Innospec's ROC (Joel Greenblatt) % compare to MTX and ODC?
According to the Chemicals industry distribution chart, Innospec ranks #372 out of 1601 companies for ROC (Joel Greenblatt) %. This places Innospec in the top 23% of its industry — outperforming the majority of peers. The industry median ROC (Joel Greenblatt) % is 9.38. Innospec's value of 17.75% is 89.2% above this benchmark. Historically, Innospec's own ROC (Joel Greenblatt) % has ranged from 8.60 to 41.44 over the past decade. While the company's 10-year median is 29.95 vs. the industry median of 9.38, Innospec has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROC (Joel Greenblatt) % for a Chemicals company?
The median ROC (Joel Greenblatt) % among Chemicals companies is 9.38, based on 1,601 companies in the industry. Companies in the top quartile (top 25%) have a ROC (Joel Greenblatt) % significantly above this median, while those in the bottom quartile fall well below. However, ROC (Joel Greenblatt) % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Innospec's current ROC (Joel Greenblatt) % of 17.75% is 89.2% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high ROC (Joel Greenblatt) % mean?
A high ROC (Joel Greenblatt) % can signal that a stock is expensive relative to its fundamentals. Joel Greenblatt's return on capital is the ratio of EBIT to average fixed assets and net working capital. View historical data on Innospec and its competitors. For the Chemicals industry, the median ROC (Joel Greenblatt) % is 9.38 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Innospec's current ROC (Joel Greenblatt) % is 17.75%, which is 41% below median its own 10-year median of 29.95. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Innospec stock overvalued right now?
Based on GuruFocus' analysis, Innospec (IOSP) is currently considered Modestly Undervalued. The stock's GF Value™ is $94.76, compared to a current price of $83.11 — trading 12.3% below its estimated fair value. The current ROC (Joel Greenblatt) % is 17.75%, which is 41% below median its 10-year median of 29.95 and 89.2% above the Chemicals industry median of 9.38. Innospec's overall GF Score™ is 76/100 with 3 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROC (Joel Greenblatt) % calculated?
ROC (Joel Greenblatt) % is calculated from a company's financial statements. For Innospec (IOSP), the current ROC (Joel Greenblatt) % is 17.75% as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Innospec (IOSP) Overvalued in 2026?
Based on GuruFocus' analysis, Innospec stock appears to be undervalued.
The current stock price of $83.11 is trading 12.3% below its estimated GF Value™ of $94.76.
GuruFocus considers Innospec to be Modestly Undervalued.
Key valuation signals for IOSP:
ROC (Joel Greenblatt) %: 17.75% (41% below median its 10-year median of 29.95)
GF Value™: $94.76 vs. price of $83.11 (12.3% below fair value)
Industry Position: 89.2% above the Chemicals median (#372 of 1601)
No single metric tells the full story. See the IOSP stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Innospec Inc manufactures and sells a variety of chemicals and fuel additives. The firm organizes itself into three segments based on product type. The Performance Chemicals segment that derives maximum revenue, provides technology-based solutions for its customers' processes or products in personal care, home care, agrochemical, construction, mining and other industrial markets. The Fuel Specialties segment develops, manufactures, blends, markets and supplies a range of specialty chemical products used as additives in diesel, jet, marine, fuel oil and other fuels. The Oilfield Services segment develops and markets chemical solutions for drilling, completion, production, DRA and oil and gas applications.
76GF Score
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