MoneyAugust 7, 2026via SiliconAngle
Optical networking startup Lumilens launches with $900M in funding
Why it matters
Optical networking is becoming a capital-intensive bottleneck in the AI buildout. This $900M round signals that investors see interconnect chips—not just accelerators—as a defensible, high-value piece of the compute stack. Practitioners deploying large-scale AI infrastructure need to track who owns the plumbing.
Key signals
- Lumilens raised $900M total ($700M Series C)
- Valuation: $5.51B post-money
- Lead investors: Atreides Management, Bain Capital Ventures, Meritech, Seligman Ventures, Spark Capital
- Focus: optical networking chips for AI clusters
- Company stage: launch/public announcement
The hook
$5.51B valuation. Lumilens just raised $900M to build the networking silicon that connects AI clusters—and the big cloud players are betting it's critical infrastructure.
Lumilens Inc., a provider of optical networking chips for artificial intelligence clusters, launched today with $900 million in funding. The company raised the bulk of the capital, $700 million, through a Series C round that valued it at $5.51 billion. Atreides Management, Bain Capital Ventures, Mer…