Ciena (CIEN) - Market capitalization

Market cap: C$81.36 Billion

As of August 2026 Ciena has a market cap of C$81.36 Billion. This makes Ciena the world's 440th 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 2026

End of year Market Cap

Year	Marketcap	Change
2026	C$81.36 B	74.28%
2025	C$46.68 B	164.17%
2024	C$17.67 B	104.4%
2023	C$8.64 B	-15.79%
2022	C$10.26 B	-32.42%
2021	C$15.19 B	45.87%
2020	C$10.41 B	21.26%
2019	C$8.58 B	18.83%
2018	C$7.22 B	91.18%
2017	C$3.78 B	-17.9%
2016	C$4.60 B	18.16%
2015	C$3.89 B	61.73%
2014	C$2.40 B	-8.78%
2013	C$2.64 B	68.19%
2012	C$1.57 B	30.97%
2011	C$1.19 B	-39.46%
2010	C$1.98 B	88.71%
2009	C$1.04 B	42.34%
2008	C$0.73 B	-75.03%
2007	C$2.95 B	7.78%
2006	C$2.74 B	36.43%
2005	C$2.00 B	-12.43%
2004	C$2.29 B	-43.11%
2003	C$4.03 B	14.69%
2002	C$3.51 B	-52.99%
2001	C$7.47 B	-78.56%
2000	C$34.87 B	204.35%
1999	C$11.46 B	393.63%
1998	C$2.32 B	-73.23%
1997	C$8.67 B

End of Day market cap according to different sources

On Aug 7th, 2026 the market cap of Ciena was reported to be:

C$81.34 Billion

by Nasdaq

C$81.36 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Cisco CSCO	C$667.08 B	719.89%	🇺🇸 USA
Juniper Networks JNPR	C$18.61 B	-77.12%	🇺🇸 USA
Infinera INFN	C$2.20 B	-97.29%	🇺🇸 USA
ADTRAN ADTN	C$0.85 B	-98.94%	🇺🇸 USA
Calix CALX	C$3.33 B	-95.90%	🇺🇸 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: C$81.36 Billion