AI Stock Sell-Off Shakes Global Markets from Wall Street to Asia

A sharp sell-off in artificial intelligence (AI)-focused stocks on Tuesday led to widespread declines across global markets, from Wall Street to Asia. Investors questioned the soaring valuations of AI stocks and the sustainability of spending on AI infrastructure, triggering significant losses in technology-heavy indices. The Nasdaq Composite index opened down between 2% and 2.5%, while the S&P 500 index also fell by 1% to 1.6%. The Dow Jones Industrial Average, less influenced by tech stocks, initially dropped but later recovered to post a slight gain.

The sell-off began on Monday with Google-parent Alphabet's shares dropping 5%, fueled by investor concerns after high-profile AI researchers left the company. On the same day, Elon Musk's space company SpaceX, which recently made a highly anticipated initial public offering (IPO), saw its shares plunge by 16%. The company's announcement of plans to raise $20 billion in a bond sale to fund its AI projects intensified worries about excessive debt-backed spending. Following the close of US markets, Asian markets were also rattled by the downturn in AI and tech companies. South Korea's Kospi index tumbled 10% on Tuesday, triggering a circuit breaker. Its largest chipmakers, SK Hynix and Samsung Electronics, both fell by over 12%. Japan's Nikkei 225 index also closed down 3.5% to 3.6%, and European markets experienced similar declines.

This global sell-off particularly impacted semiconductor and chip manufacturers, which had largely benefited from the AI boom. Micron Technology shares fell between 8% and 12.7%, while Nvidia declined by 3% to 3.4%. Other major chipmakers such as Intel, Marvell Technology, and Advanced Micro Devices also saw losses ranging from 5.5% to 8.7%. Data storage companies like SanDisk also experienced drops of 12.2% to 13%. These declines highlighted the broader market's vulnerability due to the increasing weight of the technology sector in indices like the S&P 500. The fact that seven tech companies account for 30% of the S&P 500's value has heightened concerns about over-reliance on a single industry.

The timing of this sell-off coincided with expectations of rising interest rates, following signals from the Federal Reserve last week about potential rate hikes to combat inflation. The prospect of higher borrowing costs, which would make AI infrastructure development more expensive, negatively impacted investor sentiment. Analysts at Morgan Stanley estimate that AI-related borrowing could exceed $500 billion this year. The market's focus has shifted from developments in the US war with Iran (a ceasefire was announced in April) to the future of AI companies and chipmakers.

Market analysts have long warned about a potential 'bubble' in AI stocks, with some economists drawing parallels to the dot-com bubble of the early 2000s. Examples like South Korea's Kospi index nearly doubling this year before the plunge underscored the risks of inflated valuations. Moving forward, the tightening monetary policy under the new Fed Chair Kevin Warsh and the increasing borrowing costs for AI companies could maintain pressure on valuations. Investors are now grappling with whether this downturn in AI stocks represents mere profit-taking or the beginning of a more significant correction.