Sirius XM (SIRI) - Market capitalization

Market cap: £5.26 Billion

As of February 2026 Sirius XM has a market cap of £5.26 Billion. This makes Sirius XM the world's 2576th 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 Sirius XM from 1996 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	£5.26 B	2.22%
2025	£5.15 B	-17.61%
2024	£6.25 B	-62.09%
2023	£16.49 B	-12.16%
2022	£18.77 B	0.61%
2021	£18.66 B	-6.03%
2020	£19.85 B	-17.45%
2019	£24.05 B	23.07%
2018	£19.54 B	7.25%
2017	£18.22 B	4.75%
2016	£17.40 B	23.08%
2015	£14.13 B	11.38%
2014	£12.69 B	-1.59%
2013	£12.89 B	37.08%
2012	£9.40 B	114.26%
2011	£4.39 B	5.74%
2010	£4.15 B	188.5%
2009	£1.43 B	400.45%
2008	£0.28 B	-87.18%
2007	£2.24 B	-13.46%
2006	£2.59 B	-50.43%
2005	£5.23 B	3.2%
2004	£5.06 B	152.17%
2003	£2.00 B	6401.14%
2002	£30.91 M	-93.29%
2001	£0.46 B	-45.44%
2000	£0.84 B	6.78%
1999	£0.79 B	65.46%
1998	£0.47 B	188.88%
1997	£0.16 B	566.91%
1996	£24.81 M

End of Day market cap according to different sources

On Feb 21st, 2026 the market cap of Sirius XM was reported to be:

£5.23 Billion

by Nasdaq

£5.26 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Beasley Broadcast Group BBGI	£5.74 M	-99.89%	🇺🇸 USA
Tegna TGNA	£2.49 B	-52.67%	🇺🇸 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 Sirius XM (SIRI)

Market cap: £5.26 Billion