TacticScaleWhat Lumentum Does & How It Makes Money (LITE)
Updated October 2026 · reflects Lumentum's latest reported financials
Maker of lasers and optical components for networks and industry. It makes money by manufacturing and selling optical components, such as laser chips and wavelength management systems, and system products, such as optical modules, optical circuit switches and industrial lasers, to customers in cloud, AI, telecom, consumer and industrial markets worldwide.
How Lumentum makes money
It makes money by manufacturing and selling optical components, such as laser chips and wavelength management systems, and system products, such as optical modules, optical circuit switches and industrial lasers, to customers in cloud, AI, telecom, consumer and industrial markets worldwide.
What Lumentum does
Lumentum Holdings is a San Jose-based maker of optical and photonic products, incorporated in 2015. It sells components such as semiconductor laser chips, laser sub-assemblies, line subsystems and wavelength management systems, along with finished system products like optical modules, optical circuit switches and industrial lasers, including short-pulse solid-state lasers and kilowatt-class fiber lasers. Its customers are in cloud, AI/ML, telecommunications, consumer and industrial markets across the Americas, Asia-Pacific and EMEA. That puts the company in the supply chain for moving data over light in data centers and telecom networks, and for laser-based manufacturing.
Products & services
- Semiconductor laser chips
- Laser sub-assemblies and line subsystems
- Wavelength management systems
- Optical modules
- Optical circuit switches
- Industrial lasers (short-pulse solid-state and kilowatt-class fiber lasers)
What is Lumentum worth?
On an owner-earnings DCF, Lumentum's most-likely value is about $139 versus a recent price near $1,103 (87% above fair value). But TacticScale only calls a stock undervalued when the price sits below its conservative no-growth floor (~$34) with a margin of safety — so the honest verdict here is “Stretched — richly priced.” Fair value earns its keep only at the extremes, not in the wide middle.
Today's $1103 is above even the optimistic Bull case ($323) — the market expects faster, longer growth than modeled here. Expensive unless that extra growth actually shows up.
Analysis, not advice. Fair value is a margin-of-safety estimate from a deterministic owner-earnings DCF, not a price target or recommendation. See the full breakdown →
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