Highlights

  • Lumentum reported Q4 FY2026 revenue of $1.006 billion, crossing the $1 billion quarterly threshold for the first time and growing 109% year over year, as AI data centre optical interconnect demand drove volume across transceiver and optical component categories.
  • Full-year FY2026 revenue reached $3.014 billion, up 83% from $1.645 billion in FY2025, with Components revenue of $2.006 billion and Systems revenue of $1.008 billion both achieving record levels.
  • Non-GAAP diluted EPS for Q4 FY2026 was $3.23, with non-GAAP operating margin reaching 36.6%, as the company achieved its financial target model ahead of schedule.
  • Q1 FY2027 guidance calls for revenue of $1.225 to $1.275 billion and non-GAAP EPS of $4.05 to $4.35, with non-GAAP operating margin guidance of 39.5% to 40.5% reflecting continued operating leverage.

Lumentum (NASDAQ:LITE) capped fiscal year 2026 with a fourth-quarter result that carried the company above $1 billion in quarterly revenue for the first time, confirming that the explosion in AI data centre interconnect demand has fundamentally transformed the scale and profitability of the optical components business. Revenue of $1.006 billion for the quarter ended 29 June 2026, up 109% year over year, and full-year revenue of $3.014 billion — up 83% from FY2025 — underscore how the requirement to connect high-density GPU clusters with low-latency, high-bandwidth optical interconnects has generated structural demand for the coherent and direct-detect optical components in which Lumentum has invested over several years.

AI Interconnect Demand Crosses the Billion-Dollar Quarter

Q4 FY2026 revenue of $1.006 billion was split between Components at $649.4 million, growing 103% year over year, and Systems at $356.9 million, growing 123% year over year. Components — which includes laser chips, optical transceivers, and the higher-level optical integrated circuits used in data centre and telecom applications — benefited from demand for 800G and 1.6T optical transceivers required to connect next-generation GPU clusters operating at significantly higher data throughput than prior-generation AI accelerator systems.

CEO Michael Hurlston noted that AI compute demand is expanding the company's addressable market across three interconnect layers within the data centre: rack-level connections between GPUs within a single server, cross-rack connections between GPU servers within a cluster, and cluster-to-cluster connections across the wider data centre fabric. Each of these layers requires different optical components, and Lumentum's product portfolio spans all three, positioning the company to participate in optical interconnect spend at multiple points in the AI infrastructure stack.

OCS, Cloud Modules, and CPO Engagements

Management highlighted three specific growth drivers within its AI data centre optical business: OCS (Optical Circuit Switching) solutions, the cloud module business advancing toward 1.6T adoption, and early-stage co-packaged optics (CPO) engagements. OCS solutions enable dynamic reconfiguration of data centre optical networks, allowing AI clusters to adapt bandwidth allocation across different compute tasks without requiring physical hardware changes. Lumentum noted initial orders for its ELS (Electro-optic Switch) modules and multiple Non-Production Object (NPO) engagements for CPO components, where optics are integrated directly with silicon rather than connected externally, a transition expected to become significant in next-generation GPU platforms.

Financial Target Model Achieved Ahead of Schedule

Lumentum management stated that the company reached its target financial model more than a quarter ahead of the schedule it had communicated to investors, with non-GAAP operating margin of 36.6% in Q4 FY2026 reflecting the operating leverage generated as revenue scaled past $1 billion per quarter. Cash, cash equivalents, and short-term investments totalled $2.7 billion at the end of Q4 FY2026, providing the financial resources to support further investment in optical component manufacturing capacity and next-generation CPO technology development.

Q1 FY2027 Guidance

For Q1 FY2027, Lumentum guided revenue of $1.225 billion to $1.275 billion, with non-GAAP operating margin of 39.5% to 40.5% and non-GAAP EPS of $4.05 to $4.35. The guided sequential revenue growth from Q4 FY2026's $1.006 billion to a Q1 FY2027 midpoint of $1.25 billion would represent approximately 24% sequential expansion, reflecting management's confidence that AI optical interconnect demand will sustain its trajectory into the next fiscal year.

Stock Price Information

Lumentum (NASDAQ:LITE) traded at $93.26 on 29 October 2026, representing a gain of 4.22% on the day, on volume of 7.88 million shares.