Infineon Caught in a Sector-Wide Storm as Chip Stocks Shed $100 Billion in Two Days
Published on 07/28/2026 at 17:42 | Redaktion boerse-global.de
The sell-off in semiconductor stocks has turned violent, and Infineon is taking the brunt of it. Europe’s largest chipmaker saw its shares tumble nearly 9 percent on Tuesday alone, sliding from €62.70 to €57.25, as a wave of panic selling swept across global markets from Seoul to New York.
The damage, however, has been accumulating for weeks. Over the past 30 days, Infineon has shed 21 percent of its value — a brutal reversal for a stock that was trading near record highs as recently as early June. The Allzeithoch was set on June 2, 2026, and since then the shares have been in near-constant retreat.
Tuesday’s rout was triggered by a cascade of events that began in Asia. South Korea’s KOSPI index plunged more than 10 percent to a three-month low, forcing an emergency trading halt. SK Hynix cratered 14.26 percent, while Samsung Electronics lost over 13.39 percent. The selling then spread to the US, where Sandisk dropped 11.02 percent, AMD gave back 5.17 percent, and Nvidia fell 4.99 percent.
Investors are fleeing AI-chip stocks amid growing doubts about whether the massive spending on artificial intelligence infrastructure will pay off in the near term. But the catalyst that lit the fuse came from an unexpected direction: China.
Should investors sell immediately? Or is it worth buying Infineon?
A state-backed Chinese company has begun mass production of its own immersion lithography machines — the very type of equipment that Dutch giant ASML has long dominated. The first units are expected to be delivered this year to SMIC, Hua Hong Semiconductor, and CXMT. Adding to the anxiety, Chinese memory chip maker ChangXin Memory Technologies made its Shanghai stock market debut, raising roughly $9 billion. Its shares surged on the first day, fueling fears that Chinese competitors will increasingly challenge established players.
Mizuho market strategist Daniel O’Regan sees no single trigger for the sell-off. Instead, he points to a confluence of factors: fear of Chinese competition, profit-taking after a long rally in memory chips, and the weakness of South Korean chipmakers.
The pain is not confined to Infineon. STMicroelectronics fell 4.98 percent, Texas Instruments lost 2.56 percent, ON Semiconductor dropped 2.13 percent, and Analog Devices slid 2.08 percent. Yet the broader market barely flinched — the Euro Stoxx 50 lost just 0.84 percent on Tuesday, underscoring how concentrated the selling has been in the chip sector.
Infineon’s weekly loss now stands at 15.85 percent. The Relative Strength Index has fallen to 31.6, a level that typically signals an oversold condition. That has tempted some bargain hunters, but so far without lasting effect.
Infineon at a turning point? This analysis reveals what investors need to know now.
Despite the carnage, the stock remains firmly in positive territory for the year. Since January, Infineon has gained roughly 52 percent, and one source puts the year-to-date advance at 66.18 percent. The company’s structural exposure to electric vehicles, industrial automation, and data centers provides a buffer that pure-play memory makers lack.
All eyes now turn to Infineon’s fiscal third-quarter results, due next week. The numbers will test whether the company’s operational recovery is strong enough to weather the current market storm. For now, the trajectory of STMicroelectronics and Texas Instruments — both of which recently disappointed — will remain a key bellwether for the sector. If the weakness in memory chips persists, Infineon may find itself under pressure for some time yet.
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