Tower Semiconductor (TSEM) is moving higher as the market revisits its AI-infrastructure exposure through silicon photonics, with attention on recently publicized partner activity across optical modules and AI networking. The company has positioned its SiPho platform as a core manufacturing base for next-generation data-center interconnects, a theme that has been driving incremental buying interest when new collaboration details surface.

Tower disclosed it is working with NVIDIA on high-performance silicon photonics for 1.6T data center optical modules designed for NVIDIA networking protocols, reinforcing a direct linkage to the scale-out AI buildout cycle. Separately, a March 16, 2026 filing and attached announcement detailed a collaboration with Oriole Networks to commercialize nanosecond optical circuit switching for AI scale-up/scale-out networking fabrics, expanding Tower’s SiPho narrative beyond transceivers into the network fabric itself.

On the fundamentals backdrop, Tower has been emphasizing rising SiPho/SiGe demand and has framed capacity expansion as customer-aligned, including large incremental capex plans and commentary that a meaningful portion of future SiPho capacity is reserved or in the process of being reserved with customer prepayments. For momentum-oriented investors, this combination—AI optics relevance, partner validation, and a capacity/visibility message—can amplify upside moves even without a same-day earnings release.

Traders will watch for follow-through signals such as additional customer/partner disclosures, product milestones (engineering tapeouts, qualification updates, and volume timing), and management commentary that quantifies silicon photonics revenue contribution and margin trajectory. Any update that tightens timelines for 1.6T deployment ramps or broadens silicon photonics use cases in AI networking could extend the move, while lack of fresh incremental disclosures may shift attention back to valuation and quarterly execution.