Coherent Stock Falls 23% This Year. AI To The Rescue?

Coherent (COHR) stock has declined nearly 23% YTD despite strong Q3 results, including a 24% YoY revenue increase to $1.5 billion and adjusted EPS of $0.91, driven by surging demand for AI/ML transceivers like the 800G model. While valuation metrics suggest the stock is slightly undervalued, concerns remain regarding profitability with lower operating and OCF margins compared to the S&P 500; however, gross margins are improving, and the company anticipates further margin expansion with increased demand for high-margin AI and industrial laser products.

Analysis

Coherent's stock (NYSE:COHR) has experienced a significant downturn, declining nearly 23% year-to-date in 2025, influenced by a mixed macroeconomic outlook, prior cautious near-term company forecasts, and a broader market rotation away from some high-growth AI and technology equities. Despite this share price performance, Coherent's Q3 fiscal year results demonstrated robust fundamental strength, with revenue increasing 24% year-over-year to $1.5 billion and adjusted earnings per share surging by $0.53 to $0.91. This strong revenue was primarily driven by burgeoning demand for its AI/ML-related transceivers; notably, revenue from its 800G model, crucial for high-speed data transmission, grew nearly 80% sequentially to almost $200 million, underscoring Coherent's strategic positioning in the AI infrastructure space. Valuation metrics suggest COHR stock is slightly undervalued relative to the broader market, with a price-to-sales ratio of 2.2 versus the S&P 500's 3.0, and a price-to-free cash flow ratio of 18.9 compared to the S&P 500's 20.5. While Coherent's revenue growth has been impressive, averaging 22.1% over the past three years and rising 21.7% in the last twelve months to $5.6 billion, profitability concerns persist. The company's operating income over the last four quarters was $467 million, yielding an operating margin of 8.4%, below the S&P 500's 13.2%, and its operating cash flow margin was 11.9%, compared to the S&P 500's 14.9%. However, there are positive indicators for margin expansion: adjusted gross margins improved to 38.5% in the last quarter, a year-over-year increase of approximately 490 basis points, with the company targeting 40% in the near future, driven by a richer product mix including high-margin AI transceivers and advanced industrial lasers. Furthermore, its significant U.S. manufacturing presence could mitigate risks from potential tariffs on imported semiconductors.

Key Decisions for Investors

• Investors might consider the recent 23% year-to-date stock price decline as a potential entry point, given Coherent's strong Q3 revenue growth driven by AI demand and its relatively attractive valuation metrics compared to the S&P 500.
• It is crucial to monitor Coherent's ability to translate its robust top-line growth and improving gross margins into sustained operating margin expansion and enhanced free cash flow generation, as current profitability lags market benchmarks.
• Portfolio allocation should consider the ongoing market sentiment towards AI and tech stocks, alongside the company-specific execution on its margin improvement targets and growing demand in its industrial laser division.