Optics stocks surge after Lumentum's strong Q4 report and new optics ETF launch

Lumentum's fiscal Q4 report showed a 109% revenue increase and strong future guidance, boosting optics stocks like AXT and Ciena. The launch of the Roundhill Photonics & Optics ETF (LYTE) offers investors a focused way to invest in AI optical connectivity. The sector's growth depends heavily on hyperscaler AI spending, with potential risks if major cloud providers cut capital expenditures. Investors should monitor hyperscaler earnings and LYTE's concentration in a few top stocks, especially Lumentum.