SAXONBURG, Pa., March 09, 2026 (GLOBE NEWSWIRE) -- Coherent Corp. (NYSE: COHR) (“Coherent,” “We,” or the “Company”), a global leader in photonics, today announced it will join the S&P 500 index, effective Monday, March 23. Jim Anderson, CEO, said, “Joining the S&P 500 is a testament to the strength of our team, the power of our technology portfolio, and the trust our customers have placed in us. As optical interconnects and photonic solutions become foundational to scaling next-generation AI dat