Innospec Inc. (IOSP) Stock

Innospec Inc. (IOSP) is a Materials stock trading at $93.66 (as of 2026-08-21), with a market capitalization of $2.31B and a trailing P/E of 19.0. Figures are sourced from first-party U.S. SEC EDGAR filings and market data.

Innospec Inc. develops, manufactures, blends, markets, and supplies specialty chemicals across the United States and internationally. Its segments include Fuel Specialties, Performance Chemicals, and Oilfield Services, serving customers such as fuel manufacturers and refiners, personal care and home care companies, agrochemical and metal extraction formulators, and oil and gas exploration and production companies.

Understand Innospec Inc.: how it makes money

Innospec develops, manufactures, blends, markets, and supplies specialty chemicals, including fuel specialty additives used in automotive, marine, and aviation engines (as well as power station generators and heating oil), and performance chemicals that deliver technology-based solutions for customers' processes or products.

Profit is driven by selling specialty chemical products and technology-based solutions whose end use is tightly linked to how customers run engines, generators, and other fuel and industrial processes.

Revenue by segment (latest quarter)
Fuel Spec	$0.2B
Perf Chem	$0.2B
Oilfield	$0.1B

Business quality (Weak): Clear segment and end-market descriptions are provided, and the latest-quarter margins are stated, but the operating drivers presented here are primarily segment revenue levels rather than deeper profitability or volume measures.

Valuation: At 18× earnings, IOSP trades 53% below the Chemicals average (38×). Note: one-time items can distort reported P/E.

Bull case

Fuel Specialties are used as additives in the operation of automotive, marine, and aviation engines, power station generators, and heating oil: That usage links demand to ongoing operation of these engine and energy systems.
Performance Chemicals provides technology-based solutions for customers' processes or products: Solutions focus can support customer-specific value beyond commodity chemicals.

Bear case

Fuel Specialties products are tied to fuel use in transportation and energy applications (automotive, marine, aviation, generators, heating oil): If customers reduce fuel-related activity, demand for these additives can soften.
Oilfield Services segment revenues are a meaningful portion of the company’s revenue split shown in the provided data: Oilfield-related spending and activity levels can fluctuate.

Valuation — source: SEC EDGAR (first-party)
Price	$93.66
Market Cap	$2.31B
P/E Ratio	19.0
EV / EBITDA	12.1
Price / Book	1.71
Price / Sales	1.25
DCF Value (model)	$78.38
DCF Upside vs Price	-16.3%

Profitability & Growth — source: SEC EDGAR
Revenue (TTM)	$1.78B
Net Margin	6.6%
Revenue Growth (YoY)	11.8%
EPS Growth (YoY)	33.0%

Financial Health — source: SEC EDGAR
Altman Z-Score	5.25 (safe)

Valuation vs Sector & Industry
Stock P/E	19.0
Sector P/E (Materials)	25.9
Industry P/E (Chemicals)	31.1
vs Sector	-26.7%
vs Industry	-39.0%

Smart-Money Activity — SEC Form 4 / 13F / Congressional disclosures
Top Institutional Holder	BlackRock, Inc. ($283.24M)
Institutional Holders Tracked	10

Company
Sector	Materials
Industry	Chemicals
CEO	Patrick S. Williams
Employees	2,450
Country	US
IPO Date	1998-05-13

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Data as of 2026-08-21.

Figures sourced from U.S. Securities and Exchange Commission (SEC EDGAR) filings and market data. Not personalized investment advice.