Ciena Corporation
From Dot-Com Survivor to AI Kingmaker: Ciena Reclaims Its S&P 500 Crown
In a definitive validation of its transformation from a legacy telecommunications vendor to a linchpin of the artificial intelligence revolution, Ciena Corporation (NYSE: CIEN) officially rejoined the S&P 500 Index on Monday, February 9, 2026. The move, announced by S&P Dow Jones Indices earlier in the