Infineon Takes a Double Hit as Asian Chip Rout and Chinese Tech Ambitions Collide
Published on 07/28/2026 at 22:11 | Redaktion boerse-global.de
Infineon shares suffered their steepest single-day decline in months on Tuesday, sliding 7.66 percent to €57.90 as a brutal sell-off in Asian semiconductor stocks rippled across global markets. The Munich-based chipmaker was caught between two powerful headwinds: a historic crash in South Korea’s Kospi index and fresh anxiety over China’s push to develop its own chip-making equipment.
The turmoil in Seoul was extraordinary by any measure. The Korea Exchange triggered a sidecar mechanism — designed to slow automated program trading — twice during Tuesday morning trading. When that failed to stem the rout, regulators activated a Level 1 circuit breaker, halting all equity trading for 20 minutes as the Kospi plunged as much as 8.02 percent to 6,213.51 points. It marked the eighth circuit breaker on the index this year alone, compared with just 14 in its entire history. The first half of 2025 also saw 41 sidecar suspensions, eclipsing the previous record of 26 set during the 2008 financial crisis.
The damage was concentrated in the index’s heavyweights. Samsung Electronics shed roughly 11 percent at one point, while SK Hynix lost around 12 percent, dragging the broader market lower with their outsized weightings. Japan and Taiwan also posted sharp losses, though neither matched the severity of Korea’s decline.
Compounding the Asian rout was a separate shockwave emanating from China. A state-affiliated Chinese company has reportedly begun mass production of its own immersion DUV lithography machines — the critical tools used in advanced chip manufacturing. The first units are expected to be delivered this year to Chinese foundries including SMIC, Hua Hong Semiconductor and ChangXin Memory Technologies. The news stoked fears that Beijing is closing the technology gap with Western and Japanese equipment makers, threatening the competitive moat of established players.
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The impact was felt immediately across the supply chain. ASML, the Dutch lithography giant, lost more than 8 percent on Monday and another 2 percent on Tuesday, bringing its two-day decline to roughly 10 percent. Japanese equipment makers Nikon and Tokyo Electron each fell more than 10 percent. Analysts at JPMorgan cautioned that China’s planned production still lags far behind ASML, which shipped 131 comparable systems in 2025, but acknowledged the move signals Beijing’s determination to achieve equipment self-sufficiency.
Infineon’s decline was steeper than that of its European peers. The Euro Stoxx 50 slipped just 0.84 percent on the day, and the DAX briefly traded in positive territory, buoyed by falling energy prices. Among direct competitors, STMicroelectronics lost 4.98 percent, while US-listed Analog Devices, Texas Instruments and ON Semiconductor fell between 2 and 3 percent. The disparity highlights how Infineon’s exposure to the Asian memory-chip ecosystem — and its vulnerability to sentiment shifts in Seoul — amplified the damage.
A structural factor may have worsened the rout. According to Bloomberg, a wave of forced selling from leveraged chip ETFs, many of which were launched near market peaks in late May, has added downward pressure. Retail investors in South Korea, heavily exposed to these products, have been caught in a cascade of margin calls and liquidations.
The sell-off unfolded against a backdrop of broader market caution. The Federal Reserve’s interest rate decision is due midweek, with roughly 80 percent of traders pricing in a rate hike by September. Meanwhile, earnings season for major US tech companies is kicking off, adding another layer of uncertainty. The credit markets are also flashing warning signs: five-year credit default swaps on Oracle, Alphabet, Amazon, Meta, Broadcom and Nvidia have climbed to record levels, according to LSEG data. Oracle’s CDS stood at 215 basis points on Monday, up from 144 at the start of the year.
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Infineon now trades roughly 35 percent below its June high of €89.67. The relative strength index has fallen to 32.1, signaling deeply oversold conditions. Over the past 30 days, the stock has lost 27.22 percent of its value. Yet despite the recent carnage, the shares remain up 53.17 percent year-to-date — a reminder of how far they had run before the current correction.
A strategist at Mizuho noted that no single catalyst explains the sector’s weakness, pointing instead to a combination of profit-taking after the preceding rally, China-related jitters and the spillover from South Korea’s retail-driven sell-off. Whether the oversold RSI triggers a short-term bounce will depend largely on how the Fed’s decision and the upcoming US tech earnings shape sentiment in the days ahead.
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