1. Ciena posted fourth-quarter results beating revenue estimates by $1.35 billion. 2. Quarterly revenue grew 20.3% year-on-year, reflecting strong demand for their services. 3. Adjusted EPS of 91 cents exceeded analyst expectations of 77 cents. 4. First-quarter sales guidance was described as upbeat, indicating future growth. 5. Information technology stocks fell by 1.1%, potentially influencing sentiment around CIEN.