Ciena (CIEN) - Market capitalization

Market cap: NZ$56.25 Billion

As of December 2025 Ciena has a market cap of NZ$56.25 Billion. This makes Ciena the world's 727th 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 Ciena from 1997 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	NZ$56.25 B	157.59%
2024	NZ$21.83 B	111.85%
2023	NZ$10.30 B	-13.5%
2022	NZ$11.91 B	-31.72%
2021	NZ$17.45 B	54.16%
2020	NZ$11.32 B	15.94%
2019	NZ$9.76 B	23.44%
2018	NZ$7.91 B	86.82%
2017	NZ$4.23 B	-14.41%
2016	NZ$4.94 B	20.51%
2015	NZ$4.10 B	54.88%
2014	NZ$2.65 B	-12.24%
2013	NZ$3.02 B	57.28%
2012	NZ$1.92 B	27.1%
2011	NZ$1.51 B	-41.19%
2010	NZ$2.56 B	87.01%
2009	NZ$1.37 B	31.42%
2008	NZ$1.04 B	-72.96%
2007	NZ$3.86 B	15.69%
2006	NZ$3.34 B	32.36%
2005	NZ$2.52 B	-5.69%
2004	NZ$2.67 B	-44.03%
2003	NZ$4.78 B	12.43%
2002	NZ$4.25 B	-62.38%
2001	NZ$11.30 B	-78.48%
2000	NZ$52.53 B	245.52%
1999	NZ$15.20 B	430.65%
1998	NZ$2.86 B	-72.6%
1997	NZ$10.45 B

End of Day market cap according to different sources

On Dec 19th, 2025 the market cap of Ciena was reported to be:

NZ$56.19 Billion

by Nasdaq

NZ$56.25 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Infinera INFN	NZ$2.73 B	-95.14%	🇺🇸 USA
ADTRAN ADTN	NZ$1.20 B	-97.86%	🇺🇸 USA
Juniper Networks JNPR	NZ$23.12 B	-58.88%	🇺🇸 USA
Calix CALX	NZ$6.27 B	-88.84%	🇺🇸 USA
Cisco CSCO	NZ$536.42 B	853.64%	🇺🇸 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 Ciena (CIEN)

Market cap: NZ$56.25 Billion