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Reading: Global Markets Tumble Amid Concerns of AI Bubble and Crypto Instability
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Global Markets Tumble Amid Concerns of AI Bubble and Crypto Instability

News Desk
Last updated: November 21, 2025 12:22 pm
News Desk
Published: November 21, 2025
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Global stock markets experienced a sharp selloff this morning as investors expressed growing concerns over the sustainability of the recent surge in valuation among the ‘Magnificent 7’ technology companies, particularly in the realm of artificial intelligence (AI). The volatility in the markets has been pronounced, with Nasdaq 100 futures reflecting a decline of 0.36% this morning following a steep drop of 2.38% just the day before. Meanwhile, the S&P 500 futures showed flat but erratic movement, with the VIX volatility index jumping 14%.

After a significant loss of 1.56% on the previous day, the S&P 500 is currently down 3% for the month, plunging over 5% from its most recent peak. Bank of America aptly captured the market sentiment in a headline stating that “the bubbly is on ice.” Despite Nvidia’s stellar earnings report, which surpassed expectations on Wednesday, investor confidence remains shaky, suggesting potential overvaluation in the AI sector. Nvidia’s stock experienced an impressive 5% gain during the day, only to reverse course dramatically, ultimately closing down 3.15% and continuing its decline in overnight trading.

This notable shift has been labeled by Deutsche Bank as “a truly remarkable 24 hours,” highlighting the unpredictability of the market movements. The tech stock sector as a whole faced significant losses, with companies like Palantir dropping 5.85% yesterday and further losses anticipated today. Notably, Japan’s Softbank Group suffered an 11% decline.

Ed Yardeni of Yardeni Research noted that extensive uncertainty surrounding AI infrastructure spending is weighing heavily on the stock market, specifically concerning the earnings potential of AI data center firms. Nvidia’s robust report failed to alleviate investor concerns regarding the uncertainties of AI spending. Recent actions by major investors, including Softbank and Thiel Macro’s complete liquidation of their Nvidia shares, add to the prevailing unease. Financial strategist Michael Burry, known for his role in “The Big Short,” continues to flag worries about the accounting practices of leading AI firms.

The caution surrounding AI was echoed in a recent note published by ING, which pointed out growing fears about AI’s propensity to generate inaccuracies. Analyst Julian Geib highlighted that leading AI systems produce false claims at a staggering rate of up to 40%. He noted that while older AI models often refrained from answering numerous queries, the latest versions are engineered to respond to virtually every request, raising significant concerns about misinformation.

The cryptocurrency market is facing a severe downturn as well, with crypto stocks showing particularly disappointing performance. Coinbase fell 7.44% yesterday, and Michael Saylor’s Bitcoin treasury firm, Strategy, saw a decline of 5%. Both assets continued to weaken in overnight trading. Bitcoin, once heralded as a reliable store of value, has plummeted 24% this month, trading at $82,000, significantly lower than its peak of $124,000.

Paul Donovan of UBS issued a stark warning about the current state of the cryptocurrency market, suggesting that the latest fluctuations resemble hyperinflation, highlighting Bitcoin’s recent downturn as equivalent to an astounding 800% inflation rate when annualized. He emphasized the inherent risks of hyperinflation in the cryptocurrency space due to its inflexible supply dynamics.

As the markets prepare for the opening bell in New York, a snapshot reveals that S&P 500 futures are flat yet volatile, while the European STOXX 600 index has dipped 0.8% in early trading. The FTSE 100 in the U.K. is down 0.49%, Japan’s Nikkei 225 has lost 2.4%, and China’s CSI 300 fell by 2.44%. In South Korea, the KOSPI index has dropped 3.79%, and India’s NIFTY 50 is down 0.52%. The continuing downturn raises questions about the stability and long-term viability of investments in the tech and cryptocurrency sectors.

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