As of December 2025 Ciena has a market cap of โน2.780 Trillion. This makes Ciena the world's 764th 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 Dec 12th, 2025 the market cap of Ciena was reported to be: