Coherent delivered record Q2 FY2026 revenue of $1.69 billion, representing 7% sequential and 17% year-over-year growth, driven primarily by an 'extraordinary expansion' in AI data center demand. Non-GAAP EPS surged 35% year-over-year to $1.29, outpacing revenue growth due to 77 basis points of gross margin expansion to 39%. The Data Center and Communications segment, now over 70% of revenue, grew 14% sequentially with a book-to-bill ratio exceeding 4x, providing visibility into calendar 2027. Management raised the outlook for fiscal 2027, stating growth rates will exceed fiscal 2026, supported by the ramp of 1.6T transceivers, CPO solutions, and the doubling of 6-inch indium phosphide capacity by year-end.
| Metric | Value | Change |
|---|---|---|
| Q2 Revenue | $1.69 Billion | +7% QoQ, +17% YoY |
| Q2 Non-GAAP EPS | $1.29 | +11% QoQ, +35% YoY |
| Q2 Gross Margin | 39% | +24 bps QoQ, +77 bps YoY |
| Data Center Book-to-Bill | >4x | N/A |
| Data Center Revenue Growth | N/A | +14% QoQ, +36% YoY |
| Debt Leverage Ratio | 1.7x | Down from 2.3x YoY |
Coherent is aggressively leveraging a unique competitive advantage through its 6-inch indium phosphide (InP) manufacturing capacity. Management stated that a 6-inch wafer produces 'more than four times as many chips at less than half the cost' compared to 3-inch wafers. They are on track to double internal capacity by the end of calendar 2026, with wafer starts already at 80% of that target. This vertical integration is a critical moat that allows them to secure massive design wins, such as a recent CPO order specifically attributed to the customer's preference for this US-based 6-inch capability.
The company is successfully pivoting its portfolio toward higher-margin, AI-driven technologies. The 1.6T transceiver ramp is accelerating, with management noting it is 'growing much faster' than 800G off a smaller base. Additionally, they secured an 'exceptionally large purchase order' for Co-Packaged Optics (CPO) from a market-leading AI customer, which is expected to drive revenue starting late calendar 2026. This shift toward CPO and 1.6T products positions Coherent at the forefront of the next phase of AI networking upgrades.
Strategic portfolio optimization is actively improving profitability. The company completed the sale of its Munich-based product division, which had low gross margins, and exited 10 sites in the past quarter. CFO Sherri Luther noted the sale is 'immediately accretive to both gross margin and EPS' and will reduce headcount by 425 employees. This streamlining, combined with ERP consolidation and G&A efficiency initiatives, supports their target of reaching over 42% gross margins and 8% SG&A as a percentage of revenue.
Management highlighted a significant broadening of the Optical Circuit Switch (OCS) market opportunity. Backlog grew sequentially, and customer engagements increased to over 10, with applications expanding from spine-leaf redundancy to scale-out and even scale-up networks. CEO James Anderson stated that the previous $2 billion market estimate by the end of the decade was likely undersized, suggesting a substantial long-term growth driver that is just beginning to contribute materially to revenue.
The Industrial segment remains a weak point, showing flat year-over-year growth on a pro forma basis. While management pointed to a 'significant increase in orders' from semi-cap equipment customers, the broader industrial recovery is not yet evident. The guidance for the current quarter expects the industrial segment to be 'roughly flat sequentially,' indicating that this segment is not yet contributing to the company's overall growth trajectory and remains dependent on a cyclical recovery that is only partially visible.
Rising input costs for externally sourced components, specifically EMLs, pose a risk to gross margins if not perfectly offset by internal capacity. While management argues that internal 6-inch InP capacity will neutralize this, they admitted that 'EML supply from our external suppliers increased sequentially' and that they are seeing 'some higher pricing input costs.' This creates a dependency on the flawless execution of their internal manufacturing ramp to maintain margin expansion targets.
The company is engaging in massive capital expenditure increases ($154M in Q2 vs $106M YoY) to expand capacity across multiple sites (Malaysia, Vietnam, Texas, Sweden). While demand is currently 'extraordinary,' history shows that rapid capacity expansions in cyclical semiconductor markets can lead to oversupply if demand slows. Management explicitly pushed back against this concern, stating they do not see balance returning until at least 2028, but the aggressive spending increases financial risk if the AI cycle matures faster than anticipated.
Guidance for Q3 revenue of $1.70B - $1.84B implies a potential slowdown in sequential growth at the midpoint compared to the 7% sequential growth reported in Q2. The low end of the range represents only ~0.6% sequential growth, suggesting some uncertainty or lumpiness in the near-term trajectory despite the strong long-term visibility claims.
Overall: Management exhibited an exceptionally high level of confidence and enthusiasm throughout the call, characterizing demand and visibility as 'extraordinary' and 'the best it's ever been.' The tone shifted from strategic triumphalism in prepared remarks regarding market positioning to granular, operational confidence during Q&A, where they provided specific metrics like wafer start percentages to validate their capacity expansion claims.
Confidence: HIGH - Management used definitive, superlative language ('extraordinary,' 'step function,' 'tremendous') and provided concrete data points (4x book-to-bill, 80% of capacity target reached) to back up their assertions. They explicitly rejected the idea of supply-demand balance returning soon, indicating strong conviction in the duration of the upcycle.
$1.70 billion - $1.84 billion
38.5% - 40.5%
$1.28 - $1.48
Double internal capacity by end of calendar 2026
Hedging & Uncertainty: Management used very little hedging regarding demand, utilizing absolute terms like 'extraordinary,' 'tremendous,' and 'step function.' However, they employed temporal hedging regarding the industrial recovery, using phrases like 'expect to translate into sequential growth' and 'pickup in the growth,' which implies less certainty on the timing of that specific segment's rebound. When discussing the long-term CPO opportunity, they used 'believe' and 'expect,' acknowledging the inherent uncertainty of forecasting a market that is 'difficult to size,' though they quickly countered with 'very active, deep engagements' to reinforce confidence.
The demand that we're seeing and the visibility extraordinary. - James Anderson, CEO
We expect our fiscal 2027 revenue growth rate to exceed our fiscal 2026 growth rate. - James Anderson, CEO
I don't foresee the supply-demand getting back in balance this calendar year. I don't think it happens next calendar year. - James Anderson, CEO
We expect 1.6 T to ramp significantly over the coming quarters. - James Anderson, CEO
The sale of this product division is expected to be immediately accretive to both gross margin and EPS. - Sherri Luther, CFO
Analyst Sentiment: Analysts were highly engaged and focused on the sustainability of the AI boom, specifically asking for granularity on capacity constraints (InP), the ramp speed of 1.6T, and the monetization timeline of newer technologies like CPO and OCS. There was a clear focus on differentiating between near-term hype and long-term structural growth.
Management Responses: Management responses were detailed and data-rich, moving beyond high-level promises to provide specific operational metrics (e.g., wafer starts at 80% of target, 6-month lag time for wafers). They effectively used the Q&A to emphasize the durability of the cycle, pushing back against the idea of an impending supply correction.
Discussion on the 'extraordinary' visibility into demand, with bookings extending into calendar 2027 and 2028.
Deep dive into Indium Phosphide capacity constraints and the specific cost/yield advantages of 6-inch wafers.
Analysis of the 1.6T transceiver ramp and its margin accretion compared to 800G.
Inquiry into the CPO and OCS product ramps and their respective revenue contributions.
Coherent is executing exceptionally well at the epicenter of the AI infrastructure build-out. The company has successfully transitioned from a diversified industrial player to a high-growth optical component leader, with Data Center now comprising over 70% of revenue. The primary investment thesis rests on their defensible technological moat: they are the sole provider of 6-inch indium phosphide wafers, offering a significant cost and scale advantage that competitors cannot easily match. This advantage is driving margin expansion and securing critical design wins in next-gen technologies like 1.6T and CPO. With a book-to-bill exceeding 4x and visibility extending into 2028, the risk of a near-term demand cliff is low. While the Industrial segment remains a drag, the hyper-growth in Communications/Data Center and the operational discipline (portfolio pruning, debt reduction) create a compelling setup for sustained double-digit earnings growth through FY2027 and beyond.
Management indicated that the AI build-out is driving a 'step function increase' in demand that is structural rather than cyclical, with forecasts extending into 2028.
A significant recovery in semi-cap equipment orders was noted, which is expected to drive sequential growth in the Industrial segment starting in the June quarter.
The communications market is experiencing a recovery, with 44% year-over-year growth driven by Data Center Interconnect (DCI) and traditional telecom applications.