Ciena Rejoins S&P 500 After 17-Year Absence, Replacing Dayforce
DATA AND AI INFRASTRUCTURE
Ciena will return to the S&P 500 after 17 years, replacing Dayforce, which was acquired by Thoma Bravo for $12.3 billion. Ciena's stock has nearly tripled in the past year, driven by demand for data center infrastructure for AI.
The company expects a 24% revenue growth in fiscal 2026, the fastest since 2011. Ciena's stock recently reached its highest price since 2001, amid rising prices for optical components due to supply constraints.
Feb 5, 2026, 2:18 PM
