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INNOSPEC INC. (IOSP)

INNOSPEC INC. (IOSP) stock — the fundamentals (P/E, market cap, valuation) and every material event, decoded in plain English.

INNOSPEC INC. (IOSP) stock — financials & valuation

Key numbers for INNOSPEC INC. (IOSP): P/E ratio, market cap, profit margins, returns, and whether the stock looks cheap or expensive versus its own 5-year range.

AllSight quality score: 57/100 — a percentile rank of INNOSPEC INC.’s fundamentals against Manufacturing peers, weakest on profitability. A quality ranking, not a price prediction.

Market cap$2.3B
P / E19.3×
P / S1.3×
EV / EBITDA10.1×
Gross margin27.5%
Operating margin6.7%
Net margin6.6%
Return on equity9.0%
ROIC9.6%
Revenue growth2.9%
Debt / equity0.0×
Dividend yield1.9%

Is INNOSPEC INC. overvalued? P/E looks undervalued vs its 5-year range; P/S looks fair vs its 5-year range; EV/EBITDA looks undervalued vs its 5-year range; P/B looks fair vs its 5-year range.

Independent of the events above — derived from INNOSPEC INC.’s own financial statements and shown as context, never as advice.

Aug 5, 2026
Revenue and EPS cleared estimates, but underlying profit barely grew.
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