Standfirst: French semiconductor materials company Soitec has become one of Europe’s standout artificial intelligence market performers in 2026. Its specialised silicon wafers for photonics are attracting investor interest, but the company still faces smartphone weakness, heavy investment needs and a demanding valuation.
Soitec shares have climbed from approximately €23 at the start of 2026 to around €154 in Paris trading, an increase of almost seven times. The rally has continued despite a 34% fall in annual revenue to €592 million in the company’s 2026 financial year.
The latest boost came from Bank of America, which upgraded Soitec from Neutral to Buy and lifted its price target from €152 to €300. That target implies potential upside of more than 90% from the share price cited in the analysis. It is an analyst forecast, not a guarantee of future performance.
Why Soitec is attracting attention in Europe’s semiconductor industry
Soitec does not manufacture the processors used to train artificial intelligence systems. Instead, it produces engineered silicon wafers that semiconductor manufacturers use to build advanced chips.
The company, based in Bernin near Grenoble, was created in 1992 after being spun out of the French research organisation CEA-Leti. It employs more than 2,000 people and holds more than 4,700 patents, according to the supplied company information.
Its technology is gaining importance as AI data centres need to move increasing volumes of information between processors. Silicon photonics uses light rather than conventional electrical signals to transmit data, potentially enabling faster and more energy-efficient connections.
Soitec supplies specialised wafers used in the production of these optical chips. That places the French group within the expanding infrastructure surrounding AI, even though it is not itself an AI software or processor company.
Soitec’s photonics position and the AI infrastructure market
Bank of America estimates that Soitec holds about 95% of the market for Photonics-SOI wafers. The estimate is central to the bullish investment case, although competitors such as Taiwan-based GlobalWafers are seeking to enter the market.
The bank argues that Soitec’s manufacturing knowledge and technological experience could help it defend its position. However, a high market share is not the same as a permanent monopoly, and future competition remains an important risk for shareholders.
Bank of America forecasts that the total wafer area required for photonic chips could expand by about 60% annually between 2026 and 2030. If that projection is correct, demand for the materials used in optical connectivity could grow faster than demand for AI processors alone.
Soitec’s own guidance points to a sharp improvement in its photonics operations:
- Photonics revenue is expected to reach between 2.5 and three times the previous year’s level in the financial year ending March 2027.
- The company forecast approximately 50% growth in total revenue for the September quarter.
- Soitec expects to secure multi-year capacity agreements with eight of its approximately ten largest photonics customers.
Can photonics transform Soitec’s profitability?
For years, Soitec relied heavily on the smartphone market, which represented roughly half of revenue in the last financial year. Mobile communications sales fell 43% in fiscal 2026, while the division declined by a further 10% in the June quarter as customers continued working through inventories.
The company is now becoming more exposed to data-centre and AI-related demand. Its broader Edge & Cloud AI division accounted for 57% of sales in the June quarter.
Bank of America expects photonics revenue to increase from €92 million in fiscal 2026 to approximately €680 million in fiscal 2029. On its estimates, photonics would then account for almost half of projected group revenue of €1.43 billion, compared with 16% in the previous financial year.
Margins are another major part of the argument. The bank estimates that photonics wafers retain about €0.80 from every euro of sales after raw material costs, compared with €0.56 for Soitec’s other products. It therefore forecasts that the group’s gross margin could rise from 16% to 44% by fiscal 2029.
That outlook supports Bank of America’s earnings-per-share forecast of €10.62 for fiscal 2029, around 71% above the Visible Alpha analyst consensus cited in the source material.
Risks behind the Soitec share-price surge
The company’s transformation is not complete. Revenue has already fallen sharply, and the mobile communications business remains under pressure. A recovery in smartphone-related demand is possible, but it is not assured.
Soitec must also invest heavily if it is to meet expected photonics demand. Bank of America expects the company to announce an extension of its Singapore manufacturing plant, with a potential cost of about €700 million. Such spending could increase capacity, but it would also require substantial capital.
Valuation is a further concern. At approximately €154 per share, the stock trades at nearly 96 times Bank of America’s projected earnings for the financial year ending March 2027. That leaves the market vulnerable to disappointment if AI infrastructure spending slows, customer agreements are delayed or rival technologies gain ground.
The company’s first-half results, scheduled for 18 November, are expected to provide a further test of its revenue, margin and capacity expectations.
What Soitec’s rally means for Europe’s technology sector
Soitec’s performance highlights the strategic importance of less visible parts of the semiconductor supply chain. Europe is not dominant in every area of chip manufacturing, but companies producing specialised materials and equipment can still play important roles in global technology markets.
The case also illustrates the difference between exposure to artificial intelligence and direct ownership of an AI platform. Soitec’s opportunity depends on customers building optical connectivity into increasingly large data centres. Its results will therefore depend on capital spending by chipmakers and infrastructure operators, as well as on its ability to preserve its technological lead.
For investors, the central question is whether photonics growth can become large and profitable enough to offset weakness in smartphones and justify the valuation already reflected in the share price.
Conclusion
Soitec has emerged as a notable European semiconductor story because its specialised photonics wafers are closely linked to the expansion of AI data centres. The company’s market position and potential margin improvement underpin Bank of America’s bullish target, but the investment case remains exposed to competition, execution risks, large capital requirements and a very high valuation. The next major evidence will come with Soitec’s first-half results on 18 November.
This article is for informational and educational purposes only and is not financial or investment advice. Past performance does not guarantee future results. Investors should conduct independent research and seek qualified advice before making investment decisions.
