As Lumentum prepares to report earnings, a new sign suggests the optical trade is recovering. A photonics-themed exchange-traded fund (ETF) attracted more demand on its first trading day than a popular memory-focused ETF did at the same stage.

2x sales growth

Lumentum's sales more than doubled due to swelling AI demand.

Lumentum posted blowout earnings and an upbeat forecast, reflecting strong AI-related demand. However, the company’s stock was largely flat in after-hours trading following the report.