ADTRAN (ADTN) - Market capitalization

Market cap: £0.53 Billion

As of January 2026 ADTRAN has a market cap of £0.53 Billion. This makes ADTRAN the world's 6586th 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 ADTRAN from 1996 to 2026

End of year Market Cap

Year	Marketcap	Change
2026	£0.53 B	3.03%
2025	£0.52 B	0.33%
2024	£0.51 B	14.43%
2023	£0.45 B	-62.61%
2022	£1.21 B	47.3%
2021	£0.82 B	58.44%
2020	£0.51 B	43.5%
2019	£0.36 B	-10.37%
2018	£0.40 B	-41.39%
2017	£0.68 B	-21.36%
2016	£0.87 B	52.23%
2015	£0.57 B	-23.03%
2014	£0.74 B	-19.73%
2013	£0.93 B	23.72%
2012	£0.75 B	-39.01%
2011	£1.23 B	-16.43%
2010	£1.47 B	70.35%
2009	£0.86 B	37.27%
2008	£0.63 B	-9.53%
2007	£0.69 B	-13.23%
2006	£0.80 B	-38.59%
2005	£1.31 B	72.1%
2004	£0.76 B	-44.62%
2003	£1.37 B	79.89%
2002	£0.76 B	10.84%
2001	£0.68 B	25.17%
2000	£0.55 B	-56.06%
1999	£1.25 B	192.6%
1998	£0.42 B	-34.81%
1997	£0.65 B	-30.02%
1996	£0.93 B

End of Day market cap according to different sources

On Jan 12th, 2026 the market cap of ADTRAN was reported to be:

£0.55 Billion

by Nasdaq

£0.55 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Cisco CSCO	£220.29 B	40,974.83%	🇺🇸 USA
Juniper Networks JNPR	£9.93 B	1,751.65%	🇺🇸 USA
Ciena CIEN	£25.90 B	4,730.68%	🇺🇸 USA
Calix CALX	£2.65 B	394.65%	🇺🇸 USA
Extreme Networks EXTR	£1.58 B	194.60%	🇺🇸 USA
AudioCodes AUDC	£0.18 B	-64.90%	🇮🇱 Israel
Ericsson ERIC	£23.34 B	4,253.66%	🇸🇪 Sweden

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 ADTRAN (ADTN)

Market cap: £0.53 Billion