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Experts Divided Over Whether AI Boom Is the Next Big Bubble

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The record-breaking wave of artificial intelligence investments has sparked fierce debate across global markets, with opinions divided over whether the sector is inflating into a bubble reminiscent of the early 2000s dot-com frenzy.

According to Bank of America Global Research, 54% of surveyed fund managers now believe AI stocks are in a bubble, compared to 38% who disagree. The discussion has gained urgency as companies pour hundreds of billions into AI infrastructure, data centers, and startups, pushing valuations to new extremes.

The Bank of England warned that a sharp market correction tied to fading AI optimism could ripple through the global financial system. “The risk of a sharp market correction has increased,” its Financial Policy Committee said in an October update.

Singapore’s GIC investment chief Bryan Yeo also described “a little bit of a hype bubble” in the venture space, saying startups labeled as AI firms are being valued “at huge multiples” of modest revenue.

Amazon founder Jeff Bezos offered a nuanced view, saying industrial bubbles often leave lasting benefits even if many investors lose money. “When the dust settles and you see who are the winners, society benefits from those inventions,” he said.

Others, such as Goldman Sachs economist Joseph Briggs and ABB CEO Morten Wierod, argue the AI investment surge remains justified given long-term potential — though both caution about bottlenecks in infrastructure and human resources.

By contrast, Michael Burry — famed for predicting the 2008 financial crisis — has bet against high-flying AI stocks like Nvidia and Palantir, warning that the boom mirrors past speculative manias.

IMF chief economist Pierre-Olivier Gourinchas agreed that a correction could come but emphasized it would likely be contained. “This is not financed by debt,” he said, meaning any fallout would primarily hurt equity investors.

OpenAI CEO Sam Altman echoed that sentiment, admitting that investors may be “overexcited” and predicting that “someone is going to lose a phenomenal amount of money.”

Yet, UBS strategists note that even among those who believe in an AI bubble, about 90% are still invested — a sign of the sector’s magnetic pull despite growing caution.

Quantum Computing Stocks Send Speculators on a Wild Ride as Hype Outpaces Reality

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Quantum computing stocks have become Wall Street’s latest obsession — and one of its most unpredictable playgrounds. Companies such as Rigetti Computing, IonQ, D-Wave Quantum, and Quantum Computing Inc. have seen their share prices surge by 100% or more this year as investors chase what some call “the next great technological revolution.”

These firms are racing to commercialize quantum computers — machines that exploit the principles of quantum mechanics to solve problems far beyond the reach of today’s fastest supercomputers. The potential applications range from cryptography and logistics to drug discovery and financial modeling.

“It feels like science fiction has suddenly become a near-term reality,” said Sylvia Jablonski, CIO of Defiance ETFs, which runs the Defiance Quantum fund. Yet, analysts warn that enthusiasm may be running far ahead of fundamentals. Rigetti shares, for instance, have skyrocketed from just over $1 to as high as $58 this year, trading at more than 1,000 times the company’s sales.

“It’s a magic act,” said Christopher Poch of Promethium Advisors. “How else do you explain a company with a $13 billion valuation but only $22 million in forecast revenue?”

Despite the eye-popping numbers, most quantum firms remain unprofitable. Some, like Rigetti, have posted paper profits from changes in the value of securities, not from operations. Analysts say valuations in the “Quantum 4” — Rigetti, IonQ, D-Wave, and Quantum Computing Inc. — are now more art than science.

Still, optimism remains high. Major financial players such as JPMorgan Chase and HSBC have begun investing in quantum-based systems, and McKinsey projects the global quantum market could exceed $100 billion. But as Neuberger Berman’s Rick Bradt cautioned, “The promise is undeniable — but the timing remains deeply uncertain.”

Western Digital and Seagate Surge as AI Infrastructure Demand Fuels Record Gains

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Shares of data storage leaders Western Digital and Seagate have skyrocketed this year, outpacing the broader market as global demand for AI-driven infrastructure fuels unprecedented growth in hard drive sales. Both companies’ stocks have surged over 200% in 2025, reaching record highs amid a worldwide scramble to expand data storage capacity for artificial intelligence applications.

Western Digital shares rose more than 11% on Friday after the company forecast second-quarter earnings above Wall Street estimates. Analysts at J.P. Morgan noted that Western Digital has secured purchase orders from five of its largest customers through 2026, signaling strong confidence in sustained AI-related demand.

Seagate, a close rival, also projected revenue and profit above expectations earlier this week, pushing its stock up more than 22%. Both companies are now among the top three performers in the S&P 500 this year, trailing only Robinhood.

Smaller competitor Sandisk, spun off from Western Digital in February, has seen its shares soar fivefold since its debut and was up another 3.6% on Friday ahead of its upcoming earnings report.

The S&P 1500 tech hardware, storage, and peripherals sector—which includes all three companies—has climbed more than 12% this year, hitting an all-time high. As major tech firms like Alphabet, Microsoft, Meta, and Amazon ramp up capital spending on chips and data centers, analysts expect global AI infrastructure investments to reach up to $4 trillion by 2030.