Infineon's €5B Dresden Fab Nears Completion as Lofty Valuation Tests AI-Led Rally

Infineon stock up 109% to €80; 34x P/E above historical peak. €5B Dresden fab opens July 2 – key test for AI demand amid China supply risks.

Infineon’s share price has more than doubled since the start of 2026, rallying around 109% to trade near €80.30. But the chipmaker now carries a forward price-to-earnings multiple of 34 — well above its ten-year average of roughly 20 and even surpassing the peak valuation seen during the 2020/21 semiconductor boom. The market is pricing in perfection, and the next big test arrives in July.

That test is the start of production at Infineon’s new "Smart Power Fab" in Dresden, which is on track to open on 2 July 2026. The facility has absorbed around €5 billion in investment and, once fully ramped, is expected to generate annual revenue of roughly €5 billion — about one-third of the group’s forecasted total turnover for this year. Construction finished around ten weeks ahead of schedule, adding to the positive operational narrative.

The fab will create approximately 1,000 new jobs. A parallel push to build a vocational school is designed to train up to 2,000 specialists, feeding the broader Saxon microelectronics cluster where headcount has climbed by 1,500 year-on-year to 82,500. The Silicon Saxony Days conference in Dresden this week highlights that regional momentum, drawing more than 1,000 delegates from 14 countries.

The surge in demand for AI data centre infrastructure is a key driver for Infineon’s power semiconductors. These facilities require high-efficiency power management components, and the company has secured a notable contract with Siemens for silicon carbide modules used in the SENTRON 3QD2 semiconductor circuit breaker. SiC technology is considered critical for boosting efficiency in data centres, industrial equipment and electric vehicles.

Yet not every piece of news points in the same direction. Chinese supplier Yangzhou Yangjie Electronic Technology has been placed on an EU sanctions list over allegations that its components ended up in Russian drones and glide bombs. Yangjie denies the charge and says it ended its Russia business in November 2023. The European Union has granted transition periods, and an unnamed German customer has already received an exemption valid until May 2028 — underscoring how deeply Europe’s semiconductor supply chain still depends on Chinese parts.

The stock currently sits about 10% below its 52-week high of €89.67, which was touched in early June. The relative strength index stands at 60.4, indicating a constructive but not overbought posture. Annualised 30-day volatility, however, remains elevated at roughly 72%, reflecting the uncertainty baked into the current price levels.

When Dresden’s fab begins delivering actual capacity data next month, investors will get the first concrete evidence of whether the ramp-up can justify the rich earnings multiple. The forthcoming quarterly report will be the moment of truth — until then, the semiconductor industry’s eyes will stay fixed on Saxony.