Tech-Led Selloff Hits European Markets Amid STMicroelectronics Plunge and AI Spending Worries

STMicroelectronics' stock is highly overvalued, with a trailing P/E of about 428.46x versus a 5-year median of 13.51x, signaling lofty expectations and valuation risk.
UniCredit aims to acquire Commerzbank in Q4, despite reporting a 6.6% year‑on‑year revenue increase.
Nestlé said it struck a deal to sell half of its waters business to private equity group Platinum Equity.
Alphabet announced it would add $15 billion to its 2026 capital spending plans, reviving concerns about AI budgets.
TotalEnergies posted its best quarterly profit in three years, providing a positive offset to other sector declines.
European stocks fell sharply on Thursday as STMicroelectronics shares crashed more than 15%, dragging down French and Italian markets and rattling the broader tech sector. The pan-European STOXX 600 dropped 0.5% to 643.56 points, according to MarketScreener, while chipmakers led losses across the continent.
The selloff came as investors juggled rising oil prices, escalating Middle East tensions, and fresh anxiety over AI spending — all ahead of a key European Central Bank policy decision. The ECB was widely expected to hold rates steady following June's 25 basis-point cut.
STMicroelectronics was the session's biggest loser by far. The chipmaker's stock plunged more than 15% after its latest results disappointed investors. The drop hammered French and Italian indices, where STMicro carries heavy weight. Chip stocks across Europe followed it lower.
The selloff raises hard questions about STMicro's valuation. The stock trades at a trailing price-to-earnings ratio of about 428x — far above its five-year median of 13.51x, according to Charlotte Observer. That gap signals investors had priced in near-perfect growth. The results showed reality falling short.
Concerns about AI spending added to the pressure. Alphabet announced it would add $15 billion to its 2026 capital spending plans. That news revived fears that Big Tech is burning cash on AI faster than it can earn returns. European tech stocks felt the knock-on effect.
The worry is simple: if AI budgets keep growing without clear profits, valuations across the sector look fragile. STMicro's plunge on Thursday showed how quickly the market can punish companies that fail to deliver on lofty expectations.
Nestlé shares fell nearly 7% — their largest one-day drop since July 2002 — after the company said it struck a deal to sell half of its waters business to private equity group Platinum Equity, according to MarketScreener. The divestiture spooked investors worried about the group's long-term strategy.
UniCredit edged lower despite posting a 6.6% year-on-year revenue increase. The Italian bank said it aims to acquire German lender Commerzbank in the fourth quarter. The deal ambition kept investors cautious even as the underlying numbers looked solid.
Not everything went wrong on Thursday. TotalEnergies posted its best quarterly profit in three years, giving the energy sector a rare boost. Higher oil prices helped pad the numbers. The gains offered a small offset to the broader market decline.
Rising oil prices were a double-edged sword, though. War between the US and Iran drove crude higher, which lifted energy stocks but hurt the wider market. Head Topics reported that escalating tensions in the Middle East are expected to keep weighing on European equity sentiment in the sessions ahead.
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