On August 7, Coherent rose 3.02% overnight, trading at 345.11 USD/share, with turnover of 152,900 USD. The move was driven by the convergence of multiple positive catalysts in the optical communications sector.

On the news front, the Roundhill Optical Communications ETF officially began trading on August 6, rallying nearly 3% after its debut and lifting the broader optical communications sector. Coherent, as a key participant in photonics and optical interconnect for AI infrastructure, saw heightened capital attention. Simultaneously, the policy overhang from the U.S. Federal Communications Commission's proposed ban on importing new Chinese optical transceiver modules continues to bolster the domestic substitution thesis. Additionally, the company is set to report fourth fiscal quarter earnings on August 12, with consensus estimates projecting revenue of approximately 1.986 billion USD, representing 31.65% year-over-year growth, and adjusted EPS of approximately 1.62 USD, up 76.71% year-over-year. Institutional sentiment remains broadly positive ahead of the report.

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