As of July 2026 Ciena has a market cap of โน5.117 Trillion. This makes Ciena the world's 463th 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 Jul 16th, 2026 the market cap of Ciena was reported to be: