As of October 2026 Ciena has a market cap of S$65.97 Billion. This makes Ciena the world's 484th 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 Oct 28th, 2026 the market cap of Ciena was reported to be: