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StocksMediumUpdated•Originally published 20 March 2026•Updated 20 March 2026•

1 min read

Tower Semiconductor Surges 30% on AI-Driven Silicon Photonics Growth

Key Facts

1Tower Semiconductor stock rallied over 30% within a single week.

3 months ago

Version History

2 additional sources confirmed this story

Version 13 months ago

What changed: Added details on the 70% capacity reservation through 2028, identified SiGe and Intel partnerships as additional catalysts, and included current high valuation metrics (P/E and P/S ratios).

Tower Semiconductor (TSEM) shares rallied by over 30% this week, driven by the accelerating adoption of silicon photonics in AI data centers. The company's long-term outlook is bolstered by the revelation that over 70% of its new production capacity is already reserved through 2028. Beyond silicon photonics, Silicon Germanium (SiGe) technology has emerged as a critical growth driver for AI infrastructure components. Analysts also point to additional upside potential not yet fully priced in, stemming from strategic manufacturing agreements with Intel. However, the stock's valuation has reached elevated levels, currently trading at a P/E ratio of 97 and a Price-to-Sales ratio of 12. Investors remain focused on whether the company's leadership in optical interconnects can justify these premium multiples.