French semiconductor company Soitec surges over 300% in 2026, becoming Europe's best-performing stock on AI-driven photonics demand.

Soitec SA, a €3.4 billion ($4 billion) market cap French semiconductor materials maker, tops Bloomberg's European large, mid, and smallcap equity index

Stock has gained more than 300% in 2026 with an additional 84% surge in the most recent month

Strong performance driven by investor demand for companies positioned to benefit from the artificial intelligence boom

Analysts are actively raising price targets on the company as photonics technology gains prominence in AI infrastructure