Ciena (NYSE:CIEN) has been added to the S&P 500 and the S&P Global 1200, reflecting its role in AI infrastructure and global optical networking. The index changes recognize Ciena’s position in high capacity, AI focused data center and cloud networking solutions. Ciena enters these indices with its share price at $289.68 and a very large 3 year return, alongside a 1 year return of 221.5%. The stock is also up 25.6% over the past 30 days and 7.9% over the past week. This context may help...