Coherent Corp. experienced a sharp downward adjustment driven primarily by broad macroeconomic headwinds and a sector-wide retreat across optics and photonics stocks, rather than company-specific operational setbacks. Rising U.S. Treasury yields and persistent hawkish messaging from Federal Reserve policymakers elevated long-term financing cost concerns, prompting institutional investors to rotate out of high-beta technology and artificial intelligence infrastructure names. As a high-momentum play tied directly to data center buildouts, the company faced valuation compression alongside industry peers as market sentiment turned risk-off.

This pullback also reflects profit-taking and technical de-risking following an extended multi-month…