On August 24, Coherent declined 3.12% overnight, trading at $280.50/share, with turnover of $7.302 million. The stock has now fallen over 20% cumulatively since August 18, with a brief technical rebound of nearly 4% on August 21 quickly fading as selling pressure resumed.

The decline is driven by continued weakness across the optical communication and AI hardware sectors, which have been under sustained pressure since global long-term bond yields surged starting August 18. The US 30-year Treasury yield previously touched 5.337%, reaching a nearly 19-year high. The elevated interest rate environment is compressing valuation multiples for capital-intensive, high-growth technology stocks. Peer company Corning simultaneously fell 1.87%, indicating sector-wide selling has not fully dissipated.

Fundamentally, Coherent reported strong fiscal Q4 results on August 12, with revenue of $2.05 billion representing 34% year-over-year growth and adjusted EPS of $1.74, up 74%. However, the macro headwinds from rising rates have overshadowed positive company-specific catalysts including its 300mm silicon carbide substrate sampling for AI chip thermal management.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)