As of September 2026 Ciena has a market cap of โฌ46.66 Billion. This makes Ciena the world's 471th 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.
On Aug 31st, 2026 the market cap of Ciena was reported to be: