Global Tech Stocks Plummet as China’s AI Breakthrough Disrupts Market Valuations

Global technology stocks experienced a significant dip on Tuesday, continuing the downward trend initiated by a massive sell-off linked to the launch of a low-cost Chinese artificial intelligence (AI) model. This situation has raised critical concerns regarding inflated valuations and the market dominance of leading AI companies.

Shares of Nvidia (NVDA.O), a key player in the AI chip industry, saw a staggering drop of 17% on Monday, which resulted in the loss of $593 billion in market value—the largest single-day decline ever recorded by a company. This drastic fall impacted broader US markets negatively. However, by Tuesday, Nvidia shares managed to recover nearly 6% in Frankfurt trading. Other companies like Oracle (ORCL.N) and Palantir (PLTR.O), an AI data analytics firm, also saw minor gains of 3.4% and 2.97%, respectively. In contrast, European tech shares continued to face difficulties.

The sell-off was triggered after China’s DeepSeek introduced a free AI assistant last week, boasting its ability to operate on significantly less data and at a lower cost than existing models. While skepticism surrounds these claims, the development has captured global attention.

OpenAI CEO Sam Altman described DeepSeek’s model as an “impressive model” and stated, “We will obviously deliver much better models, and also it’s legit invigorating to have a new competitor!” Former US President Donald Trump termed DeepSeek’s introduction a “wake-up call for our industries.” The emergence of DeepSeek has challenged the long-held belief that Chinese tech firms lag behind their US counterparts in AI development, creating ripples throughout global markets.

In Asia, Japan’s tech sector continued to struggle. Advantest (6857.T), a supplier to Nvidia, experienced a 10% drop on Tuesday, following a 9% decline on Monday. Meanwhile, SoftBank Group (9984.T) saw a 5% decrease.

Kei Okamura, a portfolio manager at Neuberger Berman, remarked, “It’s clearly a sell-first, ask-questions-later approach,” alluding to previous market downturns in Japan.

In Europe, the Dutch semiconductor company ASML (ASML.AS) fell by 1%, reversing earlier gains after a 7.1% decline on Monday. Other notable losses included shares of Schneider Electric (SCHN.PA), ASM International (ASMI.AS), and Infineon (IFXGn.DE), which dropped between 1.2% and 4.7%.

The repercussions were also felt in US markets, where Broadcom (AVGO.O) plummeted 17.4% on Monday. Other significant declines included Microsoft (MSFT.O), a supporter of OpenAI, which dropped by 2.1%, and Google parent Alphabet (GOOGL.O), which saw a 4.2% fall. The Philadelphia semiconductor index (.SOX) recorded a 9.2% decrease, marking the steepest drop since March 2020.

This sell-off has underscored the high valuations of AI firms and the considerable investments made by US tech giants to bolster their AI capabilities. Prior to this decline, Nvidia’s shares were valued at nearly 60 times its earnings, significantly higher than the S&P 500’s ratio of 22, as per LSEG data.

David Bahnsen, Chief Investment Officer at The Bahnsen Group, commented, “What makes Monday’s tech sell-off so jarring is that the valuations of many of these AI and tech companies offer no margin of error.” The frenzy surrounding AI has funneled billions into tech stocks, creating inflated valuations and driving market indices to record highs. Since November 2022, the cumulative market value of seven major tech firms, known as the “Magnificent Seven,” has skyrocketed by an astonishing $10 trillion.

Rob Almeida, a portfolio manager at MFS International, pointed out that algorithmic trading and high leverage in tech investments likely worsened the sell-off. “When you get days like this, behind the scenes, leverage unwinds aren’t being accounted for,” Almeida explained. “Combine all these factors — over-earnings, a packed AI supply chain, sky-high valuations, and excessive robot trades — and it all becomes clear after the fact.”

As tech giants like Apple and Microsoft prepare to report their earnings this week, industry leaders are anticipated to address investor concerns regarding capital spending.