As of December 2025 Ciena has a market cap of โฌ23.74 Billion. This makes Ciena the world's 833th 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 4th, 2025 the market cap of Ciena was reported to be: