Soitec Stock Rebounds Nearly 3% and Defends Key Support at €116.50
The Isère-based semiconductor substrate specialist continues its recovery in mid-morning trading, despite a generally declining Parisian market. The session highlights the extreme volatility of the stock, fluctuating between breaking below a watched technical level and a rapid return to bullish territory. The stock is among the top gainers in the broad Paris index.
A Rollercoaster Session with Key Support at €116.50 Tested
Soitec's stock is up 2.9% at €120.70 in mid-morning trading, while the SBF 120 is down 0.26%. This movement places it among the top gainers in the broad Paris index. The session began tensely: the stock broke through its support at €116.50 in the morning, dropping to a low of €115.75, before climbing back above and gaining more than 3% from its lowest levels. This pattern extends the rebound that began on Monday following the announcement of an industrial partnership with Chinese foundry ZenSemi on 300 mm BCD-on-SOI substrates. However, the stock remains weakened on its moving averages, trading 15.55% below the MM20 (€142.93) and 11.83% below the MM50 (€136.89). The RSI at 44 indicates a neutral setup, with no signs of exhaustion in either direction. The gap to the €116.50 support, tested and defended this Wednesday, will be monitored in the upcoming sessions.
Extreme Volatility Between a 133% Quarterly Rally and a 32% Monthly Correction
The Isère-based stock exemplifies one of the most tumultuous trajectories on the Paris stock exchange. Over three months, the stock has still gained 133.7%, and 158.6% over a year. However, the past month has wiped out 32% of its value, amid a series of sessions marked by contradictory analyst revisions and double-digit intraday swings. The MM200, at €61.74, still shows a gap of more than 95% from the current price, reflecting the spring rally. At the annual release on May 27, 2026, the management highlighted market share gains in the artificial intelligence segment and the growing adoption of Photonics-SOI solutions for data centers, while noting risks such as inventory corrections among its clients and profitability pressures due to production cuts. The agreement with ZenSemi strengthens the group's position in the Chinese market, one of the strategic axes identified during the same release. The upcoming sessions should verify whether the €116.50 support, defended this Wednesday, holds over time.
