NVIDIA $1T demand (GTC Mar 16, doubled from $500B). Every Rubin rack needs LITE optics. S&P 500 joining Mar 23. OFC roadmap: $1.25B/qtr then $2B/qtr at 38-42% margin.
Lumentum — The Copper Cliff & Photonic Replacement Cycle
Why LITE is up 940% in 12 months: copper is hitting a physics wall and EVERY data center connection is being replaced with photonics. This isn't a product cycle — it's a platform replacement.
This is not just "more transceivers for AI." This is the death of copper.
Copper is hitting a physics wall called the "skin effect." At high data rates (224Gbps+), electrons crowd to the surface of the wire, increasing resistance. The only fix is shorter, thicker cables — but you can't make cables shorter when NVIDIA is going from 72 GPUs per system to 576 GPUs by 2027. Copper physically cannot connect 576 GPUs.
This means every layer of the data center is being forced from copper to photonics — not just the long-distance links that were already optical, but the short links INSIDE racks, between GPUs, and eventually ON the chip itself. The TAM isn't growing linearly. It's undergoing a step-function expansion as copper connections that were NEVER optical before become optical for the first time.
Optical interconnects: $16B (2024) → $34-41B (2030). Silicon photonics: $3B (2025) → $12-16B (2032). Data center interconnect: $15B (2025) → $26B (2030). And OCS + CPO are entirely NEW categories that didn't exist 2 years ago.
The Four Layers of Copper-to-Photonics Replacement
Each layer represents a new wave of demand for Lumentum products. We're in Layer 2 now. Layers 3 and 4 are what the market is starting to price in.
FQ2 2026 Reported — The Inflection Quarter
Record revenue, record margins, record backlog. "The vast majority of this growth is still ahead of us." — CEO Hurlston
Product Revenue Roadmap ($B)
Six product lines, each at a different stage of the S-curve. EMLs are mature. OCS is inflecting. CPO is about to explode.
Financial Projections
Revenue, earnings, and stock price trajectories
Revenue & Profitability Trajectory
Stock Price Trajectory ($)
Base vs Bull — showing how OCS/CPO inflection drives the divergence
Year-by-Year Catalysts
Full Financial Summary
Key Risks — Why This Could Go Wrong
S&P 500 inclusion March 23. Rosenblatt PT $900. TSMC CoWoS: 595K NVIDIA wafers / 72 GPUs per rack = ~8,264 racks × $75K optics = $620M LITE TAM from NVIDIA alone. NVIDIA $2B Partnership (March 2, 2026): Multi-billion dollar purchase commitments for laser and optical networking products. Secured rights to future capacity. Funds new US fab. Joint R&D on 1.6T, 3.2T transceivers, advanced OCS, and CPO. This is NVIDIA saying: "We need Lumentum for Rubin and beyond." The $695 convertible note price ($2B investment ÷ shares) sets a floor 17% above current price.