This $2B Photonics Monopoly Down 75% Is Key To AI's Next Paradigm Shift
Asymmetrical Bets
· Asymmetrical Bets
· March 26, 2026 at 18:20
· ⏱ 8 min read
| Read on Substack ↗
Summary
Soitec is a near-monopoly supplier of photonics-grade SOI wafers used in every major AI data center's optical interconnects, yet its stock has fallen 75% from highs due to cyclical weakness in mobile and automotive markets. The newsletter argues that as silicon photonics adoption grows from 38% to 84% of AI optical units by 2030, Soitec's unique position will drive a multi-bagger return, making it a high-conviction long-term pick.
•Soitec holds >95% market share in photonics-SOI wafers (Bank of America estimate).
•AI optical interconnect TAM is projected to grow from $14B to $73B by 2030 (39% CAGR).
•Silicon photonics penetration in AI optical units is expected to rise from 38% to 84% by 2030.
•Soitec's proprietary Smart Cut process is protected by ~4,300 patents; competitors (GlobalWafers, Shin-Etsu) have no meaningful volume or license limitations.
•Stock trades at ~€55, down 75% from its 2021 peak of €230, reflecting only the mobile/auto downcycle and ignoring the AI photonics opportunity.
•Edge & Cloud AI segment (photonics-related) grew 11% YoY to €216M in FY2025, while total revenue fell 9% to €891M due to mobile weakness.
Soitec holds a >95% market share in photonics-grade SOI wafers essential for AI optical interconnects, which are projected to grow from $14B to $73B by 2030. Despite current depressed revenue from mob
Soitec holds a >95% market share in photonics-grade SOI wafers essential for AI optical interconnects, which are projected to grow from $14B to $73B by 2030. Despite current depressed revenue from mobile/auto cycles, the company's monopoly in a key AI infrastructure substrate offers asymmetric upside.
This newsletter, published March 26, 2026,
features Asymmetrical Bets
discussing SOI.
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