Infineon’s GaN Patent Double and AI Data-Centre Surge Lift Shares to 25-Year Peak — Insiders Take Some Chips Off the Table

Infineon shares surge 77% YTD on GaN patent victories and strong earnings, but an insider sale and overbought RSI hint at caution.

The record run in Infineon’s stock is a tale of two countervailing forces: a string of bullish catalysts that pushed the shares to their highest level since the dot-com era, and a well-timed insider sale that added a note of caution. On Wednesday the semiconductor group climbed 4.3% to €67.65, extending its year?to?date advance to 77% and leaving it the best?performing stock in the DAX by a wide margin. Yet just a day before the latest leg higher, supervisory board member Peter Gruber sold 10,001 shares at €61.76, pocketing roughly €618,000. Market participants largely shrugged off the transaction as routine profit?taking, but the timing — shortly after the stock had touched an all?time high — kept the chorus of bulls and bears finely balanced.

What has given investors real conviction is a powerful double catalyst in gallium nitride (GaN) technology. The U.S. International Trade Commission recently imposed an import and sales ban on Chinese rival Innoscience for patent infringement covering GaN chips, a technology critical for making power?supply systems more efficient in data centres, solar installations and electric vehicles. The decision dovetails with an earlier first?instance victory for Infineon at the Munich Regional Court, with further hearings on a second patent and a utility model scheduled for June 2026. Each legal win strengthens Infineon’s grip on a market that Voxel Capital founder Kevin Salimian, speaking at the Sohn Investment Conference in New York on 12 May, argued could ultimately drive 58% upside to the share price by the end of 2027. Salimian’s thesis rests on GaN becoming the backbone of AI?infrastructure power delivery, with AI?related revenues rising to an estimated 25% of Infineon’s total by 2029.

The fundamental underpinning of the rally was reinforced by the quarterly numbers published at the start of May. Revenue for the three months to 31 March came in at €3.81 billion, up 6% year?on?year, while the Power & Sensor Systems division surged 26% to €1.26 billion, its margin topping 20%. Management confirmed full?year guidance for revenue above €16 billion and free cash flow of €1.65 billion, with energy solutions for AI data centres alone expected to contribute roughly €1.5 billion. The strong showing prompted analysts at JPMorgan, Jefferies and Goldman Sachs to lift their price targets to between €74 and €75, signalling further upside of around 10% from current levels.

Operationally, Infineon is streamlining its structure to align with the new priorities. Effective 1 July 2026 the company will consolidate its four divisions into three — Automotive, Power Systems and Edge Systems — a move designed to boost agility and sharpen the focus on AI infrastructure and electrification.

Yet the technical picture flags an element of short?term froth. The stock now trades more than 70% above its 200?day moving average, and its relative?strength index stands at 70.7, territory that historically has preceded pullbacks. For now, the combination of a US patent shield, a booming AI?data?centre demand cycle and a re?rating story backed by high?profile hedge?fund endorsements has proved strong enough to override even an insider’s decision to cash in. Whether the rally can sustain its pace without a breather is the question that will test the GaN narrative in the weeks ahead.