Coherent stock has gained about 16.8% over the past month, recovering strongly from its late-July decline. Investors will closely watch gross margins and production growth as demand for 800G and faster optical transceivers continues to expand. Coherent (COHR) stock faces a key test after Wednesday’s market close as Coherent Inc. reports fiscal fourth-quarter results. Investors will watch revenue growth, earnings, margins, and demand from artificial-intelligence data centers. Coherent, Inc., COHRCoherent Stock Faces High Earnings ExpectationsAnalysts expect Coherent to report earnings of $1.62 per share on revenue of $1.98 billion for the quarter ended June 30.