Infineon shares have been caught in a punishing crosswind over the past week, sliding 11.81% as profit-taking on a scorching year-to-date rally converged with a global semiconductor rout sparked by China’s latest artificial intelligence breakthrough. The selloff comes even as the Munich-based chipmaker reported solid second-quarter results and raised its full-year guidance for fiscal 2026, underscoring how sector-wide sentiment has overwhelmed a still-bullish fundamental picture.
The immediate trigger for the latest wave of selling was the unveiling of Kimi K3, an open-source AI model developed by Chinese startup Moonshot AI. According to reports, the model boasts 2.8 trillion parameters and has outperformed rivals such as Claude Opus 4.8 and GPT 5.5 on coding benchmarks. Analysts cited in the NZZ estimate the US technological lead over China has now narrowed to just six to nine months. The revelation sent shockwaves through global semiconductor stocks: the Philadelphia Semiconductor Index shed 11% over the week, landing nearly 24% below its all-time high and flirting with bear-market territory. In total, the sector has lost roughly US$3.3 trillion in market capitalisation since 22 June, driven by fears of intensifying Chinese competition and waning AI momentum.
Infineon closed Friday at €64.04, a 28.58% retreat from its 52-week high of €89.67 reached in early June. Despite the recent correction, the stock remains 69.36% higher year to date. The pullback was preceded by a warning in early July that a break below near-term support could trigger a move toward the €53 level. The Relative Strength Index now stands at 35.1, indicating a deep selloff without yet reaching classic oversold territory. Société Générale reviewed the stock on 17 July after a prior rally of approximately 72%, adding to the technical scrutiny.
Should investors sell immediately? Or is it worth buying Infineon?
Under the hood, Infineon’s operating performance remains robust. Revenue for the second quarter of fiscal 2026 reached €3.812 billion, with a segment result of €653 million. Management raised its annual forecast in early May, citing sustained AI demand and stronger automotive order intake. The company’s “Step Up” efficiency programme, launched in May 2024, is on track to deliver a high triple-digit million euro improvement to the segment result by the end of the current fiscal year. A new segment structure will take effect from the fourth quarter. Meanwhile, bellwether TSMC raised its 2026 capital expenditure guidance to between US$60 billion and US$64 billion and forecast third-quarter revenue of US$44.6 billion to US$45.8 billion—signals that the investment cycle in chips is far from over.
Looking ahead, Infineon will report third-quarter results on 5 August. The market will be watching closely to see whether order momentum and margins have held up during the sector turmoil. The coming days also feature earnings from Alphabet, Tesla, Intel and SAP, as well as a European Central Bank meeting on 22 July. DZ Bank expects sideways trading for broad US indices into autumn, and BIT Capital believes the revaluation in semiconductors is largely complete.
In the near term, Infineon’s share price is likely to remain hostage to the sector-wide anxiety over China’s rapid AI catch-up. But with valuation cooling from a peak price-to-earnings ratio above 90 and a still-intact operational trajectory, the stock may be setting up for a more constructive second half of the year if the next quarterly figures surprise to the upside.
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