Tower Semiconductor (TSEM) Stock Jumps 14% as Japan Backs $3B Chip Expansion

TLDR

• Tower Semiconductor stock rose 14% to $261.14 Tuesday, extending a 95% gain year-to-date
• The company announced a $3 billion expansion of chip-making operations in Japan
• Japan’s government will provide $1 billion in grants to support the investment
• Tower upgraded its 2028 outlook to $3.6B revenue and $1.2B net profit, up from $2.8B and $750M
• The expansion covers Silicon Photonics, Silicon Germanium, and advanced packaging across two phases

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Tower Semiconductor stock climbed 14% to $261.14 on Tuesday after the Israel-based chipmaker announced a major expansion in Japan backed by a $1 billion government grant.

Tower Semiconductor Ltd., TSEM

The stock had already gained 3% the previous session and is now up 95% for the year as of Monday’s close. Pre-market trading saw gains of nearly 19% before settling.

The total investment comes to $3 billion, with the Government of Japan contributing $1 billion in grants. The expansion is focused on growing Tower’s 300mm Silicon Photonics, Silicon Germanium, and advanced packaging capacity in the country.

$TSEM is planning a $3B Japan expansion to boost 300mm silicon photonics, silicon germanium, and advanced packaging capacity.

Japan will provide $1B in grants to support the project.

First phase: repurpose the Arai facility and expand Fab 7 output, with production readiness… pic.twitter.com/34f29OFUIz

— Wall St Engine (@wallstengine) July 14, 2026

Tower operates in Japan through TPSCo, which includes former Panasonic Semiconductor manufacturing facilities where Tower holds majority ownership. The expansion sites are located in Toyama and Niigata Prefectures.

The plan runs across two phases. The first involves converting the Arai facility — formerly known as Fab 6 — for 300mm Silicon Photonics and advanced packaging use, as well as increasing production at Fab 7 in Uozu. Tower expects full production readiness for this phase by Q4 2027.

Upgraded Outlook

Alongside the expansion news, Tower lifted its financial targets. The company now expects $3.6 billion in revenue and $1.2 billion in net profit for 2028. That compares to its previous forecast of $2.8 billion in revenue and $750 million in net profit — a meaningful step up on both lines.

The second phase of the Japan expansion involves building an entirely new 300mm manufacturing facility next to Fab 7. That facility will add Silicon Photonics and Silicon Germanium capacity and is expected to start contributing to earnings in 2029. Phase two is contingent on signing and closing related agreements.

Silicon Photonics and Silicon Germanium chips are widely used in optical and wireless networking applications, which have seen growing demand from data center and AI infrastructure buildouts.

Tower said the expansion is designed to support “rapidly growing long-term customer demand” and to “substantially increase its manufacturing capacity.”

CEO Comments

CEO Russell Ellwanger said the company was “honored and appreciative” that Japan selected Tower to lead expansion of what he called “strategically important technologies.”

Tower also noted the move is intended to strengthen Japan’s semiconductor ecosystem and supply chain resilience — language that aligns with broader government priorities around domestic chip production across several nations.

The company said the investment “creates long-term value for both Tower and Japan by establishing advanced domestic manufacturing capabilities.”

Tower’s 2028 revenue target of $3.6 billion and net profit of $1.2 billion are tied to the completion of the first phase of the Japan expansion.