Coherent (COHR) Q2 2026 earnings review
AI Supercycle Masks Industrial Weakness
Coherent is firing on one massive cylinder: Datacenter. Fueled by insatiable AI demand for 800G/1.6T transceivers, the company posted record revenue of $1.69B (+17% reported YoY) and significantly expanded margins. However, this growth is lopsided. The Industrial segment continues to shrink on a reported basis, acting as a drag on the top line. Management's aggressive portfolio optimization—shedding Aerospace & Defense and the Munich business—is successfully lifting margins towards the 40% target, but the company remains a 'tale of two cities' operationally.
🐂 Bull Case
The strategy to divest lower-margin businesses (Aerospace & Defense, Munich tools) and ramp internal 6-inch Indium Phosphide production is delivering. Non-GAAP Gross Margin hit 39.0% and guidance points to 39.5%—striking distance of the 40%+ long-term target.
Datacenter & Communications revenue surged 34% YoY. With backlog extending into 2028 and 1.6T transceivers just beginning to ramp, the AI tailwind appears durable and accelerating.
🐻 Bear Case
Despite management claims of 'improving demand,' reported Industrial revenue fell 2.8% sequentially and 10% YoY. The segment remains a dead weight on overall growth.
Management admitted Q1 and Q2 growth was capped by Indium Phosphide laser availability. While capacity is tripling, any execution slip on the new 6-inch wafer ramp could cause Coherent to miss the peak of the AI wave.
⚖️ Verdict: 🟢
Bullish. The AI-driven datacenter explosion is strong enough to offset industrial weakness. Execution on margin expansion and deleveraging is impressive, justifying a premium valuation.
Key Themes
Datacenter Dominance
Accelerating. The Datacenter & Communications segment is growing at a breakneck pace, up 34% YoY reported (or 22% pro forma). This isn't just hype; it's order-backed volume. Management noted orders now extend into 2028. The shift to 1.6T transceivers and increasing demand for Data Center Interconnect (DCI) are the primary engines.
Margin Expansion via Portfolio Optimization
Accelerating. Coherent is actively shrinking to grow more profitable. The sale of the Aerospace & Defense business and the Munich industrial tools division removes revenue but boosts margins. Combined with the shift to internal 6-inch Indium Phosphide wafers (costing <50% of 3-inch wafers), the path to >40% Gross Margin is clear. Guidance for Q3 implies 39.5% GM at the midpoint.
Industrial Segment Drag
Decelerating. While the CEO cited 'improving demand,' the reported numbers tell a different story: Industrial revenue dropped from $491M in Q1 to $477M in Q2. Even accounting for divestitures, this segment lacks the pulse seen in Datacom. Until this stabilizes, it dilutes the company's overall growth rate.
Indium Phosphide Supply Bottleneck
Stable. The company is sold out. Management explicitly stated Datacenter revenue is constrained by the supply of EML lasers. While they are doubling capacity within a year, they remain 'constrained to some degree.' This leaves revenue on the table in the short term.
Optical Circuit Switch (OCS) Validation
Management highlighted the Optical Circuit Switch as a >$2B market opportunity, noting shipments to 7 customers and growing backlog. This is a critical pivot from pure component supplier to subsystem player, potentially offering higher stickiness and margins long-term.
Other KPIs
Accelerating. Beat the high end of guidance. Up 35% YoY and 11% QoQ. The combination of high-margin Datacenter revenue mix and reduced interest expense (from debt paydown) is creating powerful earnings leverage.
Improving. Down from 2.4x a year ago. The company used proceeds from the A&D sale to pay down $400M in debt. This deleveraging reduces interest expense volatility and frees up cash for capacity expansion.
Guidance
Accelerating. Midpoint of $1.77B implies ~5% sequential growth, continuing the momentum from Q2. This accounts for the loss of $5M revenue from the Munich divestiture, making the organic growth slightly stronger.
Accelerating. The midpoint of 39.5% is a significant step up from Q2's 39.0%. This confirms that mix shift (more Datacom, less Industrial) and operational improvements (6-inch wafers) are flowing through to the bottom line.
Accelerating. Midpoint of $1.38 represents 7% sequential growth. The EPS growth rate continues to outpace revenue growth, demonstrating operating leverage.
Key Questions
Industrial Reality Check
Reported Industrial revenue fell sequentially despite the narrative of 'improving demand.' Is this solely due to the Munich divestiture, or is the organic business still contracting?
Capacity vs. Demand Mismatch
With orders extending into 2028, how much potential revenue is being lost in FY26 due to the Indium Phosphide constraints, and when does supply fully catch up to demand?
1.6T Margin Profile
As 1.6T transceivers ramp in the second half of the year, will initial yields present a headwind to gross margins, or are they accretive from day one?