Lumentum reported record fiscal Q3 FY2026 revenue of $808.4 million, up 90.1% year over year, as demand for optical components tied to AI data center buildouts accelerated. The company posted GAAP net income of $144.2 million, or $1.50 per diluted share, compared with a GAAP net loss of $44.1 million a year earlier.
The quarter also showed major margin expansion. GAAP gross margin reached 44.2%, while non-GAAP gross margin reached 47.9%. Non-GAAP operating margin rose to 32.2%, up from 10.8% in the year-ago quarter, reflecting stronger product mix, pricing discipline, and improved execution.
Components revenue reached $533.3 million, representing 66% of total revenue, while systems revenue reached $275.1 million. Lumentum guided fiscal Q4 FY2026 revenue to $960 million to $1.01 billion, with non-GAAP operating margin of 35% to 36% and non-GAAP EPS of $2.85 to $3.05.
- Q3 FY2026 revenue: $808.4 million, up 21.5% sequentially and 90.1% year over year
- GAAP gross margin: 44.2%; non-GAAP gross margin: 47.9%
- GAAP operating margin: 21.6%; non-GAAP operating margin: 32.2%
- GAAP EPS: $1.50; non-GAAP EPS: $2.37
- Components revenue: $533.3 million, up 77.3% year over year
- Systems revenue: $275.1 million, up 121.1% year over year
- Cash, cash equivalents, and short-term investments: $3.17 billion
- Q4 FY2026 revenue outlook: $960 million to $1.01 billion
“Margin improvement has been driven by many factors including operational rigor, pricing discipline, and product mix. This quarter, mix was aided by strength in laser chips, but also by a less-heralded part of our portfolio, ‘scale-across’ components, which include our pump lasers and narrow linewidth laser assemblies. As our key growth drivers of co-packaged optics and optical circuit switches begin to kick in, we would expect further increases in earnings power.”
Addendum — Key Points from Lumentum Investor Call
- Management identified four primary growth drivers: transceivers, optical circuit switches, optical scale-out, and optical scale-up.
- Lumentum described “scale-across” as a less appreciated margin driver tied to distributed AI data center architectures that connect compute domains across buildings or geographies.
- Pump lasers, narrow linewidth laser assemblies, and wavelength selective switches sit at the center of the scale-across opportunity.
- Narrow linewidth laser assembly shipments grew for the ninth consecutive quarter and rose more than 120% year over year.
- Pump laser shipments grew 80% year over year, with management saying demand now exceeds available supply by more than the 30% imbalance cited for EMLs.
- Lumentum said pump lasers and narrow linewidth lasers remain effectively sold out for the foreseeable future.
- The company expects EML unit output to grow more than 50% by the December 2026 quarter versus the December 2025 quarter.
- Management said wafer fab capacity in Japan remains fully allocated and at a premium.
- Lumentum began using its own CW lasers internally for its cloud transceiver business, with about 20% of modules in the Q4 guide expected to use internal CW lasers.
- The company said 1.6T transceivers carry a structurally better margin profile than 800G, although its transceiver margins still trail peers.
- Lumentum said it appears to be ahead in 1.6T transceiver execution, but supply constraints continue to limit shipments.
- Optical circuit switching remains one of the company’s largest ramp challenges, with management calling it a “tightrope” as demand steps up quickly.
- Lumentum continues to work with three OCS customers, with two driving most of the volume, and said additional opportunities look sizable.
- Management said the company expects larger OCS contributions in the back half of calendar 2026.
- Scale-out CPO should begin contributing more in the fourth calendar quarter, while scale-up CPO remains in its infancy.
- Lumentum expects its ultra-high-power laser chip ramp for CPO to generate meaningful revenue in the December quarter and support a multi-hundred-million-dollar purchase order in the first half of calendar 2027.
- Management said external laser source modules, or ELS, represent a significant vertical integration opportunity, especially for non-primary CPO customers.
- Lumentum is evaluating additional adjacencies around PICs, photodiodes, laser drivers, and fuller module-level integration.
- The Greensboro, North Carolina InP fab conversion will not contribute materially until early 2028 and is not included in the current OFC revenue projections.
- Management said the Greensboro fab could support a revenue opportunity above $5 billion if execution goes as planned.
- Lumentum is negotiating long-term agreements for constrained products, including structures such as prepayments, take-or-pay commitments, capacity reservations, and pricing arrangements.
- NVIDIA’s direct investment drove the $2.02 billion sequential increase in cash and short-term investments.
- Q3 CapEx reached $125 million, mainly for manufacturing capacity tied to cloud and AI customers.
- Management said contract manufacturing could improve margins by lowering common-component and production costs, despite fees paid to manufacturing partners.
- The company sees low near-term risk of laser oversupply because customers continue to pursue long-term supply agreements.
🌐 Analysis: Lumentum’s results point to a broader shift in optical infrastructure for AI clusters, where value moves beyond transceivers into laser chips, pump lasers, narrow linewidth laser assemblies, optical circuit switching, and co-packaged optics. The company’s Q4 outlook suggests hyperscale demand for higher-bandwidth, lower-power optical connectivity continues to outrun traditional telecom cycles.
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