Coherent Corp
Vertically-integrated hardware: designs and manufactures lasers, optical components, transceivers, and engineered materials; sells primarily B2B to hyperscalers, networking OEMs, and industrial/instrumentation customers. Owns the upstream compound-semiconductor (InP/GaAs) crystal growth and wafer fab, differentiating from module assemblers.
The thesis on this name
State of AI Compute
Vertically-integrated InP/EML laser owner inside the fork-agnostic laser gate (>30% EML supply gap), with a 6-inch InP fab as a structural GM-expansion engine — but verify weakened it: the 6-inch cost-curve that expands cheap supply is the same lever that CLOSES the scarcity gap (~2028), and the yield/cost claims are un-audited vendor figures, so it's a cau…
State of AI Compute
Long Coherent (COHR) over 12–18 months: the market is underwriting near-peak datacenter optics margins as durable, but the differentiated edge is the structural — Coherent is the only vertically-integrated owner of in-house InP/EML laser supply ramping a 6-inch fab into a >25–30% industry EML supply gap, which expands…
Earnings, margins, COGS & capex
Coherent is in a steep AI-driven growth and margin-expansion phase: Q3 FY26 revenue rose 21% YoY (27% pro forma) to $1.81B with Datacenter & Communications at 75% of revenue and growing ~41% YoY, while the legacy Industrial segment shrank to $444M (FACT, Q3 FY26). Non-GAAP gross margin reached 39.6% and non-GAAP operating margin 20.3%, both expanding on the 6-inch InP wafer transition and 1.6T mix (FACT). The $2B NVIDIA equity infusion cut net leverage to 0.5x and funds a 4x InP capacity ramp through 2027, but capex surged to $290M and is climbing, pressuring near-term free cash flow (FACT/EST).
Income statement — where each revenue dollar goes
% of revenueOf every $1 of revenue, ~62¢ is cost of goods and ~17¢ operating expense, leaving ~20¢ of operating profit (~1¢ net).
Revenue trend
Margins
up (↑105bps YoY, ↑57bps QoQ, Q3 FY26)
up (↑243bps YoY, Q3 FY26)
up (↑ from 19.9% QoQ, Q3 FY26)
up (↑55% YoY, Q3 FY26)
down (capex outrunning op cash flow on ramp)
COGS structure
COGS is dominated by compound-semiconductor wafer fabrication (InP/GaAs crystal growth + epitaxy + fab), packaging/assembly labor, and DSP/optics component content. The structural margin lever is vertical integration: bringing EML/CW laser chips in-house on 6-inch InP wafers (~half the per-device cost of 3-inch) cuts purchased-component COGS and lifts yields; offsetting drags are ramp/under-absorption on new capacity and merger-related amortization in GAAP COGS (FACT/EST).
Capex
Capex was $290M in Q3 FY26 (~16% of revenue), up from $154M in Q2 and $112M a year ago, and guided higher again in Q4 (FACT). It funds the 4x InP capacity expansion through 2027, the 6-inch wafer transition, U.S.-based laser/optics manufacturing (NVIDIA-funded), and transceiver assembly capacity to meet AI demand reported as filled through ~2028 (FACT/EST).
Latest earnings
Beat — revenue $1.81B vs ~$1.78B consensus; non-GAAP EPS $1.41 above the ~$1.30s expected (FACT)
Q4 FY26: revenue $1.91B-$2.05B, non-GAAP gross margin 39.0%-41.0%, non-GAAP EPS $1.52-$1.72; management guided FY27 growth to exceed FY26 (FACT)
- Datacenter & Comms revenue
- ~$1.4B, 75% of total, +41% YoY (FACT)
- Non-GAAP gross margin
- 39.6% (FACT)
- Net leverage
- 0.5x, down from 1.7x QoQ (FACT)
- InP capacity
- doubled (1 qtr early); 4x by end-CY27 (FACT)
Growth drivers
- AI datacenter transceiver ramp — 800G growing in CY26 with 1.6T ramping rapidly through CY26-27 (FACT)
- In-house InP/EML vertical integration on 6-inch wafers cutting cost and raising margin (FACT)
- NVIDIA partnership — $2B equity + multi-year supply commitment (>$6.5B through decade-end) for co-packaged optics (CPO) and optical circuit switching (FACT)
- Next-gen optics — co-packaged optics (CPO) and optical circuit switching (OCS) as datacenters scale beyond pluggables (FACT)
- Capacity expansion converting a demand backlog reportedly filled through 2028 into revenue (FACT/EST)
- Margin mix-up as datacenter share rises and higher-value 1.6T displaces 800G (EST)
Reported financials — SEC EDGAR
Audited GAAP figures pulled from SEC filings · latest filing 2026-08-14. The audited primary-source spine — not financial advice.
Revenue — annual (GAAP)
Margins & balance sheet — FY’26
Bull & bear
The market treats Coherent as a cyclical optics module maker riding peak AI-capex margins; the differentiated thesis is structural — it is the only vertically-integrated owner of in-house InP/EML laser supply, ramping 6-inch wafers that roughly halve per-device cost, which makes the current ~40% gross margin a floor that expands, not a peak. NVIDIA's $2B equity stake and multi-year CPO/OCS commitment hard-wire it into the next datacenter architecture.
- Vertical integration is the moat: 6-inch InP at ~half the 3-inch per-device cost structurally lifts margin as the company self-supplies lasers that peers must buy (FACT)
- NVIDIA $2B equity + >$6.5B supply commitment de-risks demand AND capacity funding, and signals Coherent wins the CPO/OCS transition rather than being disrupted by it (FACT)
- Revenue compounding: +21% YoY (27% pro forma) with FY27 guided to grow faster than FY26, and capacity sold through ~2028 (FACT)
- Margin + leverage flywheel: non-GAAP GM 39.6% rising, net leverage down to 0.5x — earnings power inflecting well above revenue growth (non-GAAP EPS +55% YoY) (FACT)
- Valuation undemanding for the growth: ~13x forward earnings on a $5+ forward EPS path leaves room for both estimate revisions and a re-rate (FACT/EST)
At ~$77B / ~13x forward (and several times intrinsic-value models), COHR prices a permanent AI-optics supercycle. The risks are that datacenter optics margins are at a cyclical peak, that low-cost Asian module makers and the CPO transition compress the pluggable TAM Coherent depends on, and that capex intensity plus NVIDIA concentration leaves little margin for a demand or pricing wobble.
- Margins may be peaking, not structural: 800G pricing is competitive and a 1.6T pricing reset or capacity glut would unwind the margin re-rate the stock is built on (EST)
- CPO is double-edged: if co-packaged optics ramps fast it cannibalizes the pluggable-transceiver revenue that is 75% of the company today (EST)
- Asian volume leaders Innolight + Eoptolink control ~60% of 800G at 20-33% net margins and are moving to 1.6T — relentless price pressure from below (FACT)
- Concentration + capex: $290M and rising quarterly capex with FCF near breakeven, demand anchored to NVIDIA/a few hyperscalers — any air-pocket is amplified (FACT/EST)
- Industrial segment already declining (-16% YoY) shows the non-AI base can't cushion an AI-capex pause; insider selling has picked up into the rally (FACT)
What it is worth
Forward P/E and EV/sales cross-check against AI-optics peers, anchored to the FY27 EPS path
~$240-280 (EST)
multiple compresses to ~10-12x and EPS estimates reset on an AI-capex digestion or 1.6T pricing reset
~$410-440 (FACT/EST)
roughly the current ~$410 level + analyst consensus PT ~$383-385, holding ~13-15x on a $5+ EPS path
~$520-575 (FACT/EST)
re-rate to ~18-20x on FY27 EPS approaching ~$6.50-7.00 as 1.6T/InP margin compounds
~13x forward EPS on a ~$5 forward number is undemanding for ~20%+ revenue growth IF margins are structural; the debate is entirely whether ~40% gross margin is a floor (bull) or a peak (bear).
SWOT
Strengths
- Only datacenter-optics player that is fully vertically integrated upstream into in-house InP crystal growth, EML/CW laser chips, and 6-inch wafer fab — a structural cost and supply-security edge (FACT)
- 75% of revenue now AI-datacenter exposed and growing ~41% YoY, with demand reportedly booked through ~2028 (FACT)
- NVIDIA $2B equity stake + multi-billion supply commitment validates the roadmap and de-risks capacity financing (FACT)
- Net leverage cut to 0.5x with ~$3.0B cash — balance sheet now funds the ramp internally (FACT)
- Margin inflection: non-GAAP GM 39.6% and rising on 6-inch yield + 1.6T mix (FACT)
Weaknesses
- GAAP profitability still weighed by heavy merger amortization, restructuring, and a large debt load from the legacy II-VI/Coherent combination (FACT/EST)
- Capex intensity ~16% and climbing is compressing free cash flow during the ramp (FACT)
- Industrial segment (~25% of rev) is shrinking (-16% YoY to $444M), a drag and a sign of cyclical/end-market softness (FACT)
- Customer concentration deepening toward NVIDIA and a few hyperscalers (EST)
- Complex, integration-heavy operating model with execution risk across crystal growth → fab → module (EST)
Opportunities
- Co-packaged optics (CPO) and optical circuit switching — the next architectural step, with NVIDIA as co-development partner (FACT)
- 1.6T and 3.2T transceiver generations carrying higher ASP and laser content per port (FACT/EST)
- U.S.-based manufacturing reshoring funded by NVIDIA aligns with policy tailwinds and supply-security premiums (FACT)
- Telecom/coherent DCI and datacenter-interconnect upgrade cycle beyond intra-DC (EST)
- Selling InP laser chips/components to module assemblers as a merchant supplier, not just finished transceivers (EST)
Threats
- Margins are being underwritten as durable at near-peak — any datacenter capex digestion or pricing reset hits the multiple hard (EST)
- CPO could compress the pluggable-transceiver TAM that drives current revenue if it ramps faster than expected (EST)
- Low-cost Asian module leaders (Innolight, Eoptolink) dominate 800G volume and could move up to 1.6T with aggressive pricing (FACT)
- Hyperscaler in-sourcing or dual-sourcing (Lumentum, Fabrinet ODM, Marvell silicon) erodes share/pricing (EST)
- AI-spend cyclicality / a single-customer (NVIDIA) demand air-pocket (EST)
Moats, dependencies & bottlenecks
Moats
Vertically-integrated in-house InP/EML/CW laser supply on 6-inch wafers Hardest-to-replicate asset — owns crystal growth → epitaxy → fab → module; 6-in transition ~halves per-device cost. Years and capital to copy (FACT)
NVIDIA strategic lock-in (equity + multi-year CPO/OCS supply commitment) Deep design-in for next-gen architecture, but non-exclusive — a contractual/relationship moat, not structural (FACT)
Decades of materials/photonics know-how across InP, GaAs, SiC; high switching costs for qualified laser sources (EST)
Long qualification cycles deter switching, but hyperscalers actively dual-source to discipline pricing (EST)
Diversifies beyond optics but in cyclical industrial/EV end-markets currently soft (FACT/EST)
Dependencies
anchor customer, $2B equity holder, CPO/OCS supply partner Concentration cuts both ways: validation + funding, but a demand or roadmap shift would be outsized (FACT)
Datacenter & Comms is 75% of revenue; the whole thesis rides AI infrastructure spend continuing (FACT)
Broadcom) for transceiver electronics Transceivers pair Coherent optics with third-party DSPs; those vendors also compete adjacently (EST)
Vertical integration reduces but doesn't eliminate reliance on raw InP/GaAs feedstock and tools (EST)
export-control / trade regime on advanced semis and China end-markets Optics largely outside the tightest controls, but tariffs/China demand exposure remain a swing factor (EST)
Advantages
- Only fully vertically-integrated optics supplier owning InP laser chips in-house — supply security + cost edge rivals lack (FACT)
- 6-inch InP wafer transition at ~half the 3-inch per-device cost — a durable, self-funded margin lever (FACT)
- NVIDIA equity + supply commitment hard-wiring into next-gen datacenter optics (CPO/OCS) (FACT)
- Broad photonics portfolio (lasers, transceivers, components, materials) spanning datacenter, telecom, and industrial (FACT)
- Balance sheet repaired to 0.5x net leverage with ~$3B cash to fund the ramp (FACT)
Weaknesses
- Heavy capex intensity (~16% and rising) suppresses free cash flow during the expansion (FACT)
- GAAP earnings still burdened by merger amortization and restructuring vs the non-GAAP headline (FACT/EST)
- Deepening reliance on NVIDIA and a handful of hyperscalers (FACT/EST)
- Industrial segment declining (-16% YoY), offering little cushion against AI-capex cyclicality (FACT)
- Exposed to aggressive low-cost Asian module pricing as 1.6T volume scales (FACT)
- Complex multi-stage manufacturing raises execution/yield risk across the integrated stack (EST)
Bottlenecks
- InP wafer capacity — the binding constraint; demand reportedly exceeds supply through ~2028, driving the 4x expansion (FACT)
- 6-inch wafer yield ramp execution — margin upside depends on holding yields as volume scales (FACT/EST)
- Capex/cash conversion — $290M+ quarterly capex keeps FCF near breakeven during the build-out (FACT)
- Skilled compound-semiconductor / photonics manufacturing labor and cleanroom buildout time (EST)
- Advanced-packaging and test capacity for 1.6T and future CPO modules (EST)
Top signals & trends
Top signals
1.6T ramping faster than expected lifts ASP/margin; watch for any 800G price erosion (FACT)
On-/ahead-of-schedule execution is the margin-durability proof point (FACT)
Sustained expansion validates the structural thesis; a stall feeds the peak-margin bear case (FACT)
Capex still rising; the bull case needs FCF to turn as the ramp matures (FACT)
Friend if Coherent leads it, threat if it cannibalizes pluggables faster than Coherent captures it (EST)
Insider sales picked up into the rally; watch share/pricing as hyperscalers qualify second sources (FACT/EST)
Trends
Datacom optical module TAM heading toward ~$16B by 2026; Coherent's core tailwind (FACT)
Each generation favors integrated laser suppliers with ASP uplift (FACT/EST)
Architectural shift Coherent co-develops with NVIDIA, but risks pluggable-transceiver cannibalization (FACT/EST)
NVIDIA-funded U.S. capacity aligns with policy and supply-security premiums (FACT)
~60% of 800G share at high net margins; pricing pressure as they move to 1.6T (FACT)
Legacy segment declining, weakening diversification against AI cyclicality (FACT)
Ecosystem & competitor graph
Suppliers feed the company; customers pull from it. Line thickness shows the strength of each tie (supply-chain dependency, customer earnings contribution). Hover to isolate a tie.
Optical DSP/PAM4 silicon used in transceivers
DSPs, switch silicon, silicon-photonics components
Wafer-fab and epitaxy equipment for InP/GaAs lines (EST)
Upstream InP/GaAs feedstock; partly internalized via vertical integration
Supplemental packaging/test capacity during ramp (EST)
Anchor customer + $2B equity holder; CPO/OCS multi-year supply commitment (FACT)
Hyperscaler buyer of 800G/1.6T datacenter optics (EST)
Hyperscaler AI-cluster optics demand (EST)
Hyperscaler datacenter interconnect customer (EST)
Networking OEM consuming optics/components (EST)
Hyperscaler datacenter buildout customer (EST)
Closest vertically-integrated U.S. peer in lasers/optics for datacenter; competes in transceivers and components, also has telecom/laser franchises (FACT)
Optical DSP / silicon-photonics and electro-optics — partner on DSPs but increasingly competitive at the optical-interface layer (FACT)
Switch silicon + silicon photonics + CPO leadership; a strategic threat as CPO displaces pluggables (FACT)
Contract optical manufacturer (NVIDIA, Cisco, Lumentum); doesn't design but enables ODM/in-house module competition (FACT)
China-listed (300308.SZ) global 800G volume leader, ~largest module share; named for analysis only, not a U.S.-listed recommendation (FACT)
China-listed (300502.SZ) high-margin (~33% net) fast-growing module maker; ~60% of 800G with Innolight. Analysis only, not a recommendation (FACT)