BT Group (BT-A.L) - Market capitalization

Market cap: £17.29 Billion

As of December 2025 BT Group has a market cap of £17.29 Billion. This makes BT Group the world's 995th 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 BT Group from 1996 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	£17.29 B	22.34%
2024	£14.13 B	11.01%
2023	£12.73 B	14.29%
2022	£11.14 B	-33.75%
2021	£16.81 B	28.24%
2020	£13.11 B	-31.03%
2019	£19.01 B	-19.51%
2018	£23.62 B	-11.87%
2017	£26.80 B	-26.32%
2016	£36.38 B	-7.79%
2015	£39.46 B	20.74%
2014	£32.68 B	8.91%
2013	£30.01 B	64.95%
2012	£18.19 B	23.6%
2011	£14.72 B	4.92%
2010	£14.03 B	34.06%
2009	£10.46 B	-0.02%
2008	£10.46 B	-52%
2007	£21.80 B	-12.75%
2006	£24.99 B	33.92%
2005	£18.66 B	7.8%
2004	£17.31 B	6.44%
2003	£16.26 B	-3.8%
2002	£16.90 B	-22.64%
2001	£21.85 B	-35.43%
2000	£33.84 B	-61.91%
1999	£88.85 B	139.66%
1998	£37.07 B	34.05%
1997	£27.65 B	22.35%
1996	£22.60 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 BT Group (BT-A.L)