Best-Performing European Stock of 2026 Rides Photonics Wave

A clamor by investors for stocks that stand to benefit from the boom in artificial intelligence has propelled a little‑known French company to the top of Europe’s 2026 equity rankings.

Soitec SA, a semiconductor materials maker with a market capitalization of about €3.4 billion ($4 billion), is the top performer in a Bloomberg index of the region’s large, mid and smallcap stocks with a gain of more than 300% this year. It’s up 84% this month alone and analysts are raising price targets.