Ciena is trading at $349.90, up 4.16%, as renewed AI optimism supports optical-networking stocks.

  • Anthropic’s IPO filing helped revive sentiment toward AI infrastructure.
  • Reports describe Ciena’s earlier rally as sector spillover rather than a company-specific event; broader technology gains also added support.
  • No new company-specific catalyst or distinct Ciena announcement was identified for the October 27 move.