Coherent stock soared 247% in one year on AI photonics and optical component strength.

Coherent Corp. (COHR) has been one of the standout performers in technology hardware over the past year, surging 247%—significantly outperforming the industry's 8% growth and the S&P 500's 24% advance. Recently, however, the stock pulled back 11% over the past month, suggesting it may be entering a healthy correction after its remarkable run. This raises a critical question for investors: Is this a buying opportunity, a signal to hold, or a reason to stay on the sidelines? While valuation remains elevated, Coherent's strengthening fundamentals indicate the company's long-term growth story remains intact.

**AI Infrastructure Demand Is Reshaping COHR's Business**

Coherent's transformation has been fueled by booming demand for AI infrastructure. The Datacenter & Communications segment has become its primary growth engine, accounting for 75% of third-quarter fiscal 2026 revenues while delivering 41% year-over-year growth. This shift is significant because it changes the company's revenue profile. Historically, hardware manufacturers have faced short product cycles and volatile demand. Today, Coherent is increasingly tied to long-duration AI infrastructure spending, providing greater confidence in future earnings. Unlike traditional semiconductor cycles, AI-related investments are backed by large-scale cloud deployments and multi-year capital spending plans, making demand considerably more predictable.

**Long-Term Orders Improve Revenue Visibility**

One of the biggest positives for Coherent is the dramatic improvement in order visibility. Rather than experiencing typical cyclical hardware demand, the company is witnessing a step-change in customer commitments. Record backlog levels now extend into calendar 2028, while long-term supply agreements stretch through 2030. This visibility substantially lowers the risk that new manufacturing investments become underutilized during an economic slowdown. To support this unprecedented demand, Coherent invested approximately $290 million in capital expenditures during the third quarter of fiscal 2026, more than doubling spending from the prior year. Importantly, this aggressive capacity expansion is backed by contractual customer commitments rather than speculative demand forecasts.

**Operating Leverage Is Beginning to Pay Off**

The surge in AI-related demand is translating directly into stronger profitability. Higher factory utilization and improved supply chain efficiencies contributed to a 163-basis-point expansion in adjusted operating margin during the third quarter. Adjusted net income climbed nearly 56% year over year, highlighting the operating leverage created by rising production volumes. As manufacturing assets become increasingly utilized, incremental revenues flow through to earnings at a faster pace, improving the overall quality of Coherent's financial performance.

**Strategic Partnerships Strengthen Financial Flexibility**

Coherent has significantly strengthened its balance sheet. NVIDIA's $2 billion equity investment increased Coherent's cash balance to roughly $3 billion during the third quarter of fiscal 2026, up from approximately $1.5 billion in the previous quarter. Beyond the financial benefits, NVIDIA's investment serves as important strategic validation of Coherent's technology and its role within the rapidly expanding AI infrastructure ecosystem. Management simultaneously accelerated debt reduction, repaying $162 million during the quarter and reducing its leverage ratio to 0.5X from 1.7X. Lower leverage, higher liquidity and declining interest costs provide considerably greater financial flexibility as the company continues investing in future growth.

**Premium Valuation Appears Supported by Improving Fundamentals**

Coherent currently trades at approximately 37.56 times forward earnings, nearly double the industry's 21.49 times forward earnings multiple. At first glance, that premium may appear demanding. However, investors are paying for a business fundamentally different from the cyclical hardware manufacturer it once was. Multi-year customer commitments, record backlog, expanding margins, stronger cash generation and a healthier balance sheet all contribute to a more predictable earnings profile. While short-term volatility is always possible following such a strong rally, Coherent's growing exposure to AI infrastructure spending and long-term customer agreements provide a solid foundation for sustained growth over the coming years.

**Coherent's Top and Bottom Line Expectations Remain Robust**

Coherent's growth prospects remain compelling, supported by strong demand across AI-driven datacenter infrastructure and improving operating leverage. The Zacks Consensus Estimate projects fiscal 2026 revenues of $7.1 billion, indicating 21.5% year-over-year growth, with momentum expected to accelerate in fiscal 2027, when revenues are forecast to increase 37.7%. The earnings outlook is equally impressive. Consensus estimates indicate fiscal 2026 EPS of $5.47, suggesting 55% year-over-year growth, with analysts expecting EPS to climb another 52.5% in fiscal 2027. Such robust top- and bottom-line projections reinforce the investment case that Coherent's transition toward AI infrastructure is creating a stronger, more predictable earnings profile despite the stock's premium valuation.

**Peers to Watch: Lumentum and IPG Photonics**

Among U.S.-listed peers, Lumentum Holdings (LITE) and IPG Photonics (IPGP) offer useful comparisons for investors evaluating Coherent. Like Coherent, both operate in optical components and photonics markets that benefit from increasing demand for high-speed data communications and advanced laser technologies. However, Coherent stands apart because of its unusually strong AI infrastructure exposure, record backlog extending into 2028, long-term supply agreements through 2030, and a significantly strengthened balance sheet following NVIDIA's strategic investment. These factors have improved earnings visibility and differentiated Coherent's growth profile within the photonics industry.

**COHR Remains a Buy for Long-Term AI Investors**

Coherent's remarkable rally reflects meaningful improvements in its business rather than market enthusiasm alone. The company has strengthened revenue visibility through long-term customer commitments, expanded profitability as AI-driven demand boosts operating leverage, and reinforced its balance sheet with greater financial flexibility. Although the stock trades at a premium and could experience periodic volatility after its strong advance, its transformation into a critical supplier for AI infrastructure supports a more durable growth outlook. With robust revenue and earnings expectations, improving execution and favorable industry trends, Coherent remains an attractive buy for investors seeking long-term exposure to the expanding AI ecosystem. COHR currently carries a Zacks Rank #2 (Buy).