Materials and photonics company Coherent (NYSE: COHR) announced better-than-expected revenue in Q1 CY2026, with sales up 20.5% year on year to $1.81 billion. On top of that, next quarter’s revenue guidance ($1.98 billion at the midpoint) was surprisingly good and 3.4% above what analysts were expecting. Its non-GAAP profit of $1.41 per share was 1.1% above analysts’ consensus estimates.

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StockStory’s Take

Coherent’s first quarter results for 2026 showcased robust top-line growth, with management attributing momentum primarily to accelerating demand from AI data center and communications customers. CEO Jim Anderson highlighted that the company saw a "step function increase in our order book," leading to a record backlog and strong visibility well into future periods. Despite the outperformance relative to Wall Street’s expectations, the market reacted negatively, reflecting possible investor concerns about supply ramp execution and margin scalability.

Looking ahead, Coherent’s guidance is underpinned by exceptional customer demand and the company’s rapid expansion of internal production capacity, especially for indium phosphide—a key material for advanced optical components. Anderson emphasized, “Our target this year is to double our indium phosphide capacity,” and noted that the company is tracking ahead of schedule. Management expects continued strong sequential revenue growth, supported by new product ramps in transceivers, optical circuit switches, and co-packaged optics, as well as multi-rail and thermal management solutions entering the pipeline.

Key Insights from Management’s Remarks

Management attributed the quarter’s performance to AI-driven demand, operational improvements in manufacturing, and product mix shifts, while also highlighting new growth vectors.

• AI data center demand surge: The Datacenter & Communications segment drove results, accounting for 75% of revenue, with strong adoption of high-speed optical transceivers (including 800 gig and 1.6T products) as AI infrastructure spending intensified.

• Indium phosphide ramp benefits: Coherent’s accelerated shift to 6-inch indium phosphide wafers increased output efficiency, reduced production costs, and contributed to margin expansion. Initial shipments from the Sherman, Texas facility began flowing into revenue, with further capacity expansion planned in Zurich.

• Production bottleneck resolution: The company resolved key internal component bottlenecks in its optical circuit switch (OCS) manufacturing, allowing for faster production scaling and backlog conversion, which management expects to drive near-term revenue growth.

• Long-term agreements (LTAs) with customers: Multiple new multi-year supply agreements were finalized, often including upfront customer investments to fund capacity expansion and demand guarantees, thus improving long-term visibility. These LTAs cover both hyperscale cloud providers and systems manufacturers.

• Portfolio diversification and innovation: Beyond core AI datacenter products, Coherent advanced new offerings in data center cooling (Thermadite materials), thermoelectric generation for waste heat recovery, and multi-rail communications systems, expanding its addressable market and potential for future revenue streams.

Drivers of Future Performance

Coherent’s outlook is fueled by sustained AI infrastructure demand, ongoing capacity expansion, and the introduction of new high-margin products in data center and communications.

• AI-driven product ramps: Management expects rapid adoption of new transceiver generations (1.6T and upcoming 3.2T), co-packaged optics, and multi-rail systems to significantly boost revenue over the next year. The partnership with NVIDIA, including a supply agreement and equity investment, provides additional demand certainty for CPO solutions.

• Capacity expansion and margin improvement: Doubling indium phosphide wafer capacity is anticipated to unlock further revenue growth while lowering unit costs, supporting non-GAAP gross margin expansion. Management views 6-inch wafer production as a long-term differentiator, enabling both scale and cost advantages.

• Execution risks and industry constraints: The company cautioned that industry-wide shortages of materials like indium phosphide and the complexity of multi-site capacity ramps present ongoing risks. Additionally, management highlighted the importance of balancing capacity allocation to maximize margin dollars amid evolving customer priorities.

Catalysts in Upcoming Quarters

In the coming quarters, the StockStory team will monitor (1) the pace and impact of indium phosphide capacity expansion on both revenue and gross margin, (2) initial revenue contributions from new product ramps in co-packaged optics and multi-rail systems, and (3) the execution and impact of recently signed long-term customer agreements. Progress in the rollout of advanced thermal management and power efficiency solutions will also be key signposts.

Coherent currently trades at $325.39, down from $344.76 just before the earnings. In the wake of this quarter, is it a buy or sell? See for yourself in our full research report (it’s free).

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