Coherent Q3 FY26 slides: AI datacenter surge drives 27% revenue jump

Coherent reported record Q3 FY2026 revenue of $1.80B and non-GAAP EPS of $1.41, with revenue up 27% pro forma year over year and gross margin expanding 105bps to 39.6%. Datacenter & Communications now accounts for 75% of sales, with that segment up 41% year over year, while the company also announced a strategic NVIDIA partnership including a $2B equity investment. Q4 guidance is also strong, calling for revenue of $1.91B-$2.05B and EPS of $1.52-$1.72, and shares rose 2.66% aftermarket to $340.98.

Analysis

The immediate winner is not just COHR’s equity story but the broader AI optical supply chain: every incremental ramp in high-speed interconnect tightens the bottleneck around lasers, photonics, packaging, and manufacturing yield. The NVIDIA relationship matters because it lowers commercialization risk for next-gen optics and effectively validates COHR as a strategic bottleneck supplier rather than a cyclical components vendor; that should support a higher multiple than peers without that design-win visibility. The second-order effect is that competitors in optical modules and transceivers may face margin pressure if COHR’s vertically integrated stack drives better performance and faster qualification cycles.

The market may still be underestimating share dilution as a constraint on per-share upside. Operational leverage is real, but the step-up in diluted shares means the company needs sustained revenue beats over multiple quarters just to preserve current EPS momentum; if growth decelerates even modestly, the valuation can compress quickly because the stock has already rerated aggressively. The key question over the next 1-2 quarters is not demand, but whether capacity expansion and yield gains arrive on schedule enough to convert revenue into cash flow rather than just headline growth.

Contrarian view: consensus is likely extrapolating AI infrastructure demand too cleanly into 2027, while the actual path is lumpy and qualification-driven. The new product roadmap is valuable, but each successive node depends on hyperscaler adoption timing; a few months’ slippage can defer revenue by quarters. That creates a window where the stock can remain strong on guidance, but any disappointment in gross margin or capex efficiency could trigger a fast de-rating from "strategic AI winner" to "expensive execution story."

Key Decisions for Investors

• Stay long COHR on 1-2 quarter horizon, but use pullbacks rather than chasing strength; reward remains upside as long as datacenter mix and margins hold, while the risk is multiple compression if execution slips.
• Pair trade: long COHR / short a basket of slower-moving optical peers over the next 3-6 months to express relative share-gain and validation from the NVIDIA ecosystem; cover if COHR guidance implies yield or margin hiccups.
• Buy NVDA on weakness as a supplier-enablement beneficiary, but size modestly: the strategic investment reinforces ecosystem control, yet direct earnings sensitivity is limited versus the signaling value.
• For event risk, consider a defined-risk COHR call spread into the next earnings print: upside if guidance is raised again, limited downside if the stock stalls on dilution concerns.
• Avoid chasing COHR outright after the post-earnings move; wait for a consolidation phase or a broader AI semis pullback to improve entry, since the main near-term risk is expectation saturation rather than demand collapse.