A relatively obscure French semiconductor firm has become one of Europe’s leading AI stock performers in 2026, propelled by a specialized technology that few competitors can produce.
Soitec SA’s shares have risen nearly sevenfold this year, climbing from about €23 at the start of January to roughly €154 in Monday’s Paris trading. The company, however, reported a 34% decline in annual revenue the prior year.
Bank of America now expects the stock to more than double, upgrading Soitec from Neutral to Buy and lifting its price target from €152 to €300, implying over 90% upside.
The French company behind a critical AI technology
Soitec does not manufacture the processors that train AI models. Instead, it produces engineered silicon wafers on which other chipmakers build their components.
Headquartered in Bernin, near Grenoble, the firm was spun out of the French research institute CEA‑Leti in 1992. It employs more than 2,000 people and holds over 4,700 patents.
Earlier this month, Euronews journalist Valérie Gauriat visited Soitec’s production facilities for the Made in Europe series. Inside the clean rooms, silicon wafers go through dozens of manufacturing stages, allowing the company to manipulate ultra‑thin material layers.
“Our job is to run faster than the competition,” said Chief Technology Officer Christophe Maleville.
This expertise is becoming increasingly valuable as AI data centers need to move massive amounts of information between processors. Silicon photonics—using light instead of electrical signals—offers a faster, more energy‑efficient alternative to traditional copper interconnects.
Soitec supplies the specialized silicon wafers used to fabricate these optical chips, positioning it as a key player in the expanding AI infrastructure market.
Why Bank of America sees a near monopoly in AI photonics
Analysts at Bank of America, led by Oliver Wong, estimate that Soitec currently holds roughly 95% of the market for Photonics‑SOI wafers.
Rivals such as Taiwan’s GlobalWafers are trying to enter the segment, but the bank believes Soitec’s deep technological know‑how and decades of manufacturing experience will protect its dominant position.
The importance of this advantage is likely to grow as AI data centers expand and demand more optical connections between processors. Bank of America forecasts that the total wafer area needed for photonic chips will increase by about 60% annually from 2026 to 2030, potentially driving demand for Soitec’s materials far faster than the growth of AI processors themselves.
In September, Soitec projected that photonics revenue would reach 2.5 to three times the prior year’s level in the fiscal year ending March 2027, and that total revenue would grow roughly 50% in the September quarter. The company also expects to lock in multi‑year capacity agreements with eight of its roughly ten largest photonics customers, which should make future demand more predictable.
How AI could reshape Soitec profitability
Until recently, Soitec’s revenue was heavily reliant on the smartphone industry, which accounted for about half of its sales in the last fiscal year.
However, in the June quarter the Edge & Cloud AI division contributed 57% of total sales. Bank of America anticipates this shift will accelerate, projecting photonics revenue to rise from €92 million in fiscal 2026 to roughly €680 million by fiscal 2029.
That would represent nearly half of the group’s projected €1.43 billion revenue, up from just 16% a year ago. Importantly, profitability is expected to improve even faster than sales.
The bank estimates that photonics wafers retain about €0.80 of gross profit per €1 of sales after raw‑material costs, versus €0.56 for other Soitec products. As photonics becomes a larger share of the business, Bank of America expects the company’s gross margin to climb from 16% to 44% by fiscal 2029.
“We believe FY26 gross margin of 16% marked the trough for Soitec,” Wong and his colleagues noted. This anticipated recovery underpins their €10.62 earnings‑per‑share forecast for fiscal 2029, about 71% above the Visible Alpha analyst consensus.
Why a nearly 600% rally still carries substantial risks
Soitec’s transformation is far from complete.
Annual revenue fell 34% to €592 million in fiscal 2026, and mobile‑communications sales dropped 43%.
The smartphone division contracted another 10% in the June quarter as customers continue to trim inventories. Bank of America expects the mobile business to bottom out this fiscal year, but a rebound is not assured.
Meeting the growing demand for photonics will require significant investment. The bank expects Soitec to announce an expansion of its Singapore manufacturing plant in the coming months, potentially costing around €700 million.
Valuation also poses a challenge. At roughly €154 per share, Soitec trades at nearly 96 times Bank of America’s projected earnings for the fiscal year ending March 2027. Such a premium leaves investors exposed if AI infrastructure spending slows or competing technologies gain traction.
Soitec will release its first‑half results on 18 November, providing a fresh test of its ambitious growth outlook. At the start of 2026, investors were focused on shrinking smartphone sales and deteriorating profits. Today, the company is increasingly valued as a critical supplier to the global AI industry.
The key question is whether its photonics business can expand fast enough to justify a share price that may already reflect an extraordinary transformation.
This article is for informational and educational purposes only and does not constitute financial advice, investment advice, or a recommendation to buy or sell any financial instrument. Readers should conduct their own research and consult a qualified financial adviser before making any investment decisions. Investing involves risk, including the potential loss of capital. Past performance is not indicative of future results.
