Why Is Ciena (CIEN) Stock Up 7.77% Today, Oct 1? Bernstein’s $440 Target and AI Networking Demand Lift CIEN

Ciena rallied after Bernstein initiated coverage with an Outperform and $440 target, reinforcing the view that AI-driven optical networking is a structural beneficiary of data-center capex. Broad strength across optical peers added sector momentum, while CIEN's close above its 50-day EMA improved near-term technical tone. The key near-term sensitivity is whether backlog converts to revenue and whether supply conditions support delivery execution.