Innospec (IOSP) - Market capitalization

Market cap: £1.48 Billion

As of January 2026 Innospec has a market cap of £1.48 Billion. This makes Innospec the world's 4737th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Innospec from 1998 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	£1.48 B	2.47%
2025	£1.44 B	-34.27%
2024	£2.19 B	-8.56%
2023	£2.40 B	14.24%
2022	£2.10 B	27.64%
2021	£1.64 B	0.82%
2020	£1.63 B	-15.37%
2019	£1.93 B	62.62%
2018	£1.18 B	-5.72%
2017	£1.26 B	-5.29%
2016	£1.33 B	50.73%
2015	£0.88 B	32.58%
2014	£0.66 B	-2.34%
2013	£0.68 B	37.02%
2012	£0.49 B	18.71%
2011	£0.41 B	33.9%
2010	£0.31 B	112.29%
2009	£0.14 B	55.59%
2008	£94.83 M	-53.69%
2007	£0.20 B	-27.6%
2006	£0.28 B	141.64%
2005	£0.11 B	-12.47%
2004	£0.13 B	0.75%
2003	£0.13 B	13.75%
2002	£0.11 B	-20%
2001	£0.14 B	59%
2000	£91.74 M	6.23%
1999	£86.36 M	-25.72%
1998	£0.11 B

End of Day market cap according to different sources

On Jan 13th, 2026 the market cap of Innospec was reported to be:

£1.47 Billion

by Nasdaq

£1.48 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
NewMarket Corp NEU	£4.96 B	235.48%	🇺🇸 USA
W. R. Grace GRA	£3.45 B	132.95%	🇺🇸 USA
Albemarle ALB	£15.48 B	945.56%	🇺🇸 USA
Sensient Technologies SXT	£3.01 B	103.39%	🇺🇸 USA
Huntsman Corporation HUN	£1.46 B	-0.87%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Innospec (IOSP)

Market cap: £1.48 Billion