COHR Stock - Coherent, Inc.

Coherent (COHR) is navigating the 1.6T optical transceiver transition by leveraging a first-mover advantage in 6-inch Indium Phosphide (InP) wafer fabrication. This structural shift from the industry-standard 3-inch format is the cornerstone of its strategy to optimize yields and defend gross margins as AI back-end network demand intensifies through the remainder of fiscal 2026.

1. Production Ramp: The 6-Inch InP Transition

Coherent is currently the only merchant supplier with operational 6-inch InP fabrication capabilities at its Sherman, Texas, and Järfälla, Sweden, facilities. This transition is critical for the 1.6T ramp because:

• Capacity Scaling: A 6-inch wafer provides 4x the chip output of a 3-inch wafer. Management has stated they are on track to double internal InP capacity by the end of calendar 2026 to meet a "step-function" increase in bookings.
• Automation & Throughput: The company has integrated fully automated, high-throughput plasma processing equipment to support the shift to 200G-per-lane optical engines. This automation reduces labor costs per wafer and accelerates the qualification cycle for 1.6T modules.

2. Yield Optimization & Cost Structure

Yield optimization is the primary lever for Coherent’s margin defense. By moving to the larger 6-inch format, the company achieves:

• Superior Yield Metrics: In recent earnings calls, management confirmed that initial 6-inch InP yields are already higher than legacy 3-inch yields. This is attributed to improved wafer uniformity and the application of experience gained from high-volume 6-inch Gallium Arsenide (GaAs) production.
• Unit Economic Advantage: The transition enables a >60% reduction in die costs. This "dimensionality reduction" allows Coherent to absorb the pricing pressure typical of high-volume ramps while maintaining profitability.

3. Gross Margin Defense & Competitive Positioning

Coherent’s gross margin strategy for fiscal 2026 relies on vertical integration to counter intensifying competition from Lumentum, Broadcom, and Marvell.

• Margin Trajectory: Non-GAAP gross margins reached 39.0% in Q2 FY26, up from 38.7% in Q1. Guidance for Q3 FY26 is set between 38.5% and 40.5%, reflecting the accretive nature of 1.6T products.
• Product Mix: 1.6T transceivers carry higher Average Selling Prices (ASPs) and better margins than 800G. Coherent offers three distinct 1.6T architectures—Silicon Photonics (SiPh), EML, and VCSEL—allowing it to capture diverse hyperscaler requirements (e.g., NVIDIA’s Spectrum-X platform).
• Vertical Integration: By producing its own laser engines (EMLs and CW lasers), Coherent avoids the "margin stack" of competitors who must source chips externally. This internal supply chain is a key defense against the -10% to -15% annual price erosions common in the datacom industry.

4. Risks & Execution Challenges

Despite the yield advantages, several factors could impact the fiscal 2026 outlook:

• Supply Constraints: While capacity is doubling, growth in the data center segment remains partially constrained by the speed of the InP laser ramp.
• Competitive Response: Lumentum remains a formidable rival in the 200G EML space, and any aggressive capacity expansion from competitors could narrow Coherent's current lead in InP supply.
• Technology Timing: While SiPh and EML-based 1.6T modules are ramping now, the 200G VCSEL-based solutions for shorter-reach AI links are not expected to ramp until the second half of calendar 2026.

Coherent Corp. (COHR) has undergone a significant strategic pivot regarding its Silicon Carbide (SiC) business, moving away from a vertically integrated "device-to-wafer" model to a specialized materials-focused approach. This shift is a direct response to both the global electric vehicle (EV) market slowdown and a broader corporate restructuring under CEO Jim Anderson to prioritize high-margin AI infrastructure.

Strategic Realignment: Exit from SiC Devices

In a major update during its June 2025 Investor Day, Coherent announced a definitive exit from the SiC device module business. The company is now focusing its SiC operations exclusively on substrates (wafers) and epitaxy.

• Operational Shutdown: The decision to shutter the device business was driven by the need to reallocate R&D resources toward higher-margin areas like AI data centers and industrial lasers, where gross margins exceed 40%.
• Asset Optimization: Coherent is in the process of exiting nine factories within an 18-month window (concluding late 2026) to streamline its manufacturing footprint.
• Core Focus: The remaining SiC business is centered on its leadership in 200mm and the newly announced 300mm conductive SiC substrates, which are being marketed for thermal management in AI data centers as much as for power electronics.

Impact of EV Market Slowdown on Valuation

The current EV market volatility has placed downward pressure on the valuation of SiC-related assets across the industry.

• Revenue Contraction: In fiscal 2025, Coherent’s Materials segment (which houses SiC) reported a -6% year-over-year revenue decline, primarily attributed to weak automotive demand and inventory corrections.
• Valuation Compression: While the SiC subsidiary was valued at $4.0B post-money in late 2023 (following a $1.0B investment from Denso and Mitsubishi Electric), current market conditions suggest a more conservative private-market valuation. Competitors like Wolfspeed have seen significant market cap erosion, and global SiC wafer growth slowed to approximately 20% in 2025 due to Chinese overcapacity and pricing wars.
• Pricing Pressure: Aggressive production ramps by Chinese manufacturers have led to a "price war" in 6-inch and 8-inch substrates, potentially halving costs by 2026 and squeezing margins for Western suppliers.

Potential for Spinoff or Divestiture

While Coherent has not formally announced a full spinoff of the remaining SiC wafer business in the "coming months," the structural groundwork is largely complete.

• Independent Subsidiary Status: The SiC business already operates as an independent subsidiary (Silicon Carbide LLC), with its own funding and a minority interest held by strategic partners. This structure is designed to facilitate a future IPO or full divestiture when market conditions improve.
• Portfolio Optimization: CEO Jim Anderson has demonstrated a high velocity of divestitures, including the sale of the Aerospace & Defense business for $400M and the Munich-based materials processing unit.
• Strategic Alternatives: Management continues to evaluate "strategic alternatives" for underperforming or non-core assets. However, the recent pivot to use SiC for AI data center thermal management (via the 300mm platform) suggests Coherent may retain the business longer to capture the AI infrastructure tailwind before seeking a final exit.

Key Risks and Forward Outlook

• AI vs. EV Exposure: Coherent’s valuation is increasingly decoupled from the EV market and tied to AI. In Q2 2026, Datacom revenue surged 34%, masking the continued softness in the Industrial and Automotive segments.
• 300mm Execution: The success of the SiC business now hinges on the high-volume ramp of the 300mm platform. Any delays in this transition could further erode the segment's competitive standing against vertically integrated players like STMicroelectronics or Onsemi.
• Debt Reduction: Proceeds from ongoing divestitures are being used to pay down debt, which stood at approximately $3.7B as of mid-2025. A full divestiture of the SiC business remains a potent lever for further deleveraging.

Following the Q2 FY2026 earnings report and updated guidance, Coherent’s (COHR) strategic pivot toward high-speed datacom components—specifically 800G and 1.6T transceivers—is the primary catalyst for its mid-term financial transformation. This shift directly influences the company's ability to meet its FY2026 EBITDA margin and deleveraging targets through a combination of high-value product mix and operational efficiencies.

Revenue Mix Shift and Margin Expansion Dynamics

The transition to a revenue mix dominated by the Datacenter & Communications (DCC) segment, which now accounts for over 70% of total revenue, is central to Coherent’s margin expansion strategy.

• 1.6T Transceiver Ramp: Management expects 1.6T products to ramp significantly throughout calendar 2026. These next-generation components carry higher average selling prices (ASPs) and are expected to be margin accretive compared to the current 800G volume leaders.
• Vertical Integration & 6-Inch InP: Coherent is doubling its internal Indium Phosphide (InP) capacity. The shift from 3-inch to 6-inch wafers is a critical margin driver, as 6-inch wafers produce more than 4x the chips at less than 50% of the cost.
• Profitability Targets: For Q2 FY2026, Coherent reported a non-GAAP gross margin of 39.0% and a non-GAAP operating margin of 19.9%. The company is tracking toward its mid-term target model of >24% operating margin and >42% gross margin. Adjusted EBITDA for the quarter was $310.1M, representing an 18.4% margin, with analysts projecting expansion toward 23-24% by the end of FY2026.

Deleveraging Progress and Capital Allocation

Coherent has accelerated its deleveraging timeline through aggressive portfolio optimization and strong operational cash flow from AI-driven demand.

• Leverage Ratio Reduction: The debt leverage ratio improved to 1.7x in Q2 FY2026, down from 2.3x in the prior year. This brings the company well below its stated target of keeping leverage <2.0x.
• Strategic Divestitures: The completion of the sale of the Munich-based materials processing division in early 2026 and the prior sale of the Aerospace & Defense business have provided capital specifically earmarked for debt reduction and interest expense savings.
• Interest Expense: Interest and other net expenses decreased to $58M for the first half of FY2026, compared to $64M in the prior year, reflecting the impact of debt paydowns and repricing.

Risks and Operational Headwinds

While the revenue shift supports long-term goals, several factors could impact the pace of achievement by the end of FY2026:

• Capital Intensity: Capital expenditures (CAPEX) rose to $154M in Q2 FY2026 (up from $104M), driven by the need to expand InP and transceiver capacity. This high investment level has temporarily pressured free cash flow (FCF), which turned negative at -$57.9M in recent periods.
• Supply Chain Constraints: Persistent industry-wide shortages in InP laser capacity remain a bottleneck. While Coherent’s vertical integration provides a competitive edge, any delays in the 6-inch wafer ramp could slow the expected margin accretion from 1.6T products.
• Market Competition: Peers like Lumentum are also aggressively expanding margins, creating a competitive environment that may limit pricing power despite the current book-to-bill ratio exceeding 4x.