Infineon’s Record Run Accelerates on AI Data Center Surge and Legal Shield

Infineon shares rally to multi-decade high after STMicro's AI forecast, strong Q2 results, and US patent win against Innoscience. Analysts raise targets above €90.

A surprise from a European peer lit the fuse, but Infineon’s own fundamentals and a courtroom victory have turned a sharp rally into a multi-decade high. Shares of the Munich-based chipmaker surged as much as 6% on Tuesday to €85.94, marking the stock’s strongest level in more than 20 years and extending a year-to-date climb that now stands at 123%.

The initial spark came from STMicroelectronics, which doubled its revenue forecast for the data center segment to roughly $1 billion. Investors interpreted the upgrade as a powerful signal that demand for power-management chips in AI servers is accelerating faster than anticipated — a sweet spot where Infineon holds a commanding 17% market share for energy-conversion solutions used directly at the server rack.

Infineon’s own quarterly numbers added ballast to the narrative. In the second quarter of its fiscal year, the company posted revenue of €3.8 billion with a segment result margin of 17.1%. Management guided for third-quarter sales of approximately €4.1 billion and lifted its full-year margin target to around 20%, while projecting free cash flow of roughly €1.25 billion.

Analysts quickly revised their estimates higher. Deutsche Bank raised its price target from €70 to €90 while keeping a buy rating. Morgan Stanley followed with a target of €91. Jefferies went further, lifting its target from €75 to €96 and reiterating a “buy” recommendation, arguing that power-management demand and capacity expansion for fiscal 2026/2027 support earnings more than 10% above current consensus.

The bullish outlook is reinforced by a patent victory. The U.S. International Trade Commission ruled in Infineon’s favor, imposing an import ban on certain gallium nitride (GaN) products from Chinese rival Innoscience for patent infringement. GaN technology is critical for high-efficiency power supplies in consumer electronics and industrial applications. The ban is subject to a 60-day review period by the White House, but the decision already strengthens Infineon’s legal moat in a fast-growing segment.

On the product front, Infineon unveiled a new 1,300-volt silicon carbide module from its HybridPACK family, capable of continuous operation at temperatures up to 205°C — a key advance for high-temperature applications in electric vehicles. The company also took the lead on a major European research initiative: since June 1, it has been coordinating the “Moore4Power” consortium, a €91 million project with 62 partners from 15 countries aimed at developing next-generation intelligent power electronics for electromobility and renewable energy.

Investors will have several near-term milestones to watch. On June 9, Infineon is set to present further details on its AI roadmap and new power-supply solutions at the PCIM Europe trade show in Nuremberg. The company’s new Smart Power Fab in Dresden is scheduled to begin production in July, and third-quarter results are due on August 5. Until then, the market will be scrutinizing whether capacity additions can sustain the momentum that has already propelled the stock to levels unseen in more than two decades.