SIA Engineering Company (S59.SI) - Market capitalization

Market cap: £2.26 Billion

As of December 2025 SIA Engineering Company has a market cap of £2.26 Billion. This makes SIA Engineering Company the world's 3928th 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 SIA Engineering Company from 2002 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	£2.26 B	43.52%
2024	£1.57 B	-0.22%
2023	£1.58 B	-2.38%
2022	£1.62 B	20.88%
2021	£1.34 B	9.46%
2020	£1.22 B	-30.45%
2019	£1.76 B	-7.4%
2018	£1.90 B	-1.87%
2017	£1.93 B	-8.52%
2016	£2.11 B	-1.84%
2015	£2.15 B	-4.87%
2014	£2.26 B	-13.35%
2013	£2.61 B	13.49%
2012	£2.30 B	23.47%
2011	£1.86 B	-20.45%
2010	£2.34 B	76.31%
2009	£1.33 B	47.58%
2008	£0.90 B	-49.11%
2007	£1.77 B	19.52%
2006	£1.48 B	54%
2005	£0.96 B	51.07%
2004	£0.63 B	5.66%
2003	£0.60 B	-2.27%
2002	£0.61 B

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 SIA Engineering Company (S59.SI)