European Semiconductor Stocks Diverge After Earnings: Soitec Surges 23%, STMicroelectronics Drops 15%
Taylor Wilson
European semiconductor stocks split sharply on Thursday as earnings rolled in — Soitec surged ~23% while STMicroelectronics plunged 15%. Under the same AI demand wave, the market is voting with real money on who can turn demand into profit and who cannot.
Why did Soitec rally 23%?
Soitec, a French semiconductor materials supplier, beat sales expectations handily and guided for over 30% revenue growth in Q2.
The key driver: its photonics SOI business — making specialty wafers that let chips transmit signals with light instead of electricity — is expected to more than double from a base of just over $100 million last year.
This means → AI demand for photonic wafers is not a forward-looking story; it is already showing up as real revenue in this quarter's results.
Where did STMicro and Besi fall short?
STMicroelectronics dropped 15% in a single session; quarterly profit missed expectations, dragged down by a slower-than-expected recovery in auto and industrial markets.
Besi, a Dutch semiconductor equipment maker, posted strong order bookings but Q2 revenue came in slightly below expectations, sending its stock down about 3%.
In plain terms = strong orders ≠ profit right now; the market cares about when the earnings actually arrive, not how good the narrative sounds.
Why has consensus become a ceiling?
Citi's head of European tech equity research, Andrew Gardiner, noted that consensus forecasts already price in strong growth for 2026 and 2027.
This means → the bar for further upside is dramatically higher — being "good" is not enough; results must beat what the market has already priced in.
Allspring portfolio manager Rushabh Amin: "The market is starting to ask where the next revenue comes from… Semiconductor stocks have now entered that same cycle."
What signal does Nokia's report carry?
Nokia, the Finnish network equipment maker, posted Q2 profit above expectations — yet the stock barely moved.
CEO Justin Hotard: "Demand remains strong, and supply is still the industry's main constraint, pushing customers to place longer-term orders."
He also told Reuters that AI customers fighting for chip supply are driving up memory prices, and the company is passing costs it cannot absorb through design changes on to customers.
This reflects a widening of AI supply-chain tension — from chips themselves into upstream networking gear and memory.
What is the market's core tension right now?
Alphabet reported record cloud revenue growth this week while raising its 2026 capex plan by $15 billion.
In plain terms = the hyperscalers keep spending more; investors are now asking: when does that spending start earning its keep?
The root of the divergence: AI demand is validated, but which links in the chain can convert demand into above-consensus profit remains unresolved.
Content is for reference only, not financial advice.