Asian stocks plunge as tech sector cracks widen amid AI boom concerns

A few cracks have developed in the tech sector recently
An analyst warns that continued declines in major tech firms could severely constrain broader market gains.

Across Asian markets on Friday, a reckoning arrived that had long been deferred — the question of whether the artificial intelligence boom had outpaced the reality of its returns. Seoul's Kospi fell more than eight percent, Tokyo's Nikkei shed five, and markets from Hong Kong to Manila followed, as the technology sector that had carried global equities to record heights began to buckle under the weight of its own expectations. The tremors began on Wall Street, where price hikes, regulatory pressure, and doubts about AI's near-term profitability cracked the confidence of investors who had, for months, chosen optimism over scrutiny. What is unfolding is not merely a market correction but a philosophical audit — a moment when the world pauses to ask whether it has been pricing dreams or earnings.

  • Seoul's Kospi plunged 8.2% and briefly halted trading, with chip giants SK hynix and Samsung each losing more than five percent as the AI investment thesis came under fierce scrutiny.
  • Apple's announcement of product price hikes, combined with EU warnings targeting Amazon and Microsoft over cloud dominance, sent a chill through markets already questioning whether AI spending will ever justify its scale.
  • The Nikkei fell five percent as SoftBank collapsed more than thirteen percent after reports that OpenAI may delay its IPO until 2027, puncturing one of the most anticipated listings in the AI era.
  • Even a softer-than-expected inflation reading — normally a market lifeline — failed to reassure investors, overwhelmed by the sense that tech valuations have simply run too far ahead of fundamentals.
  • Analysts warn that if the largest hyperscalers cannot find their footing, the broader market rally has no engine left to drive it forward.

Seoul's stock market fell hard on Friday, dropping more than eight percent in afternoon trading and triggering a brief halt — the latest convulsion in a brutal week for Asian equities. The Kospi's collapse was led by chip makers SK hynix and Samsung, whose losses reflected a broader reckoning with a technology sector that had driven markets to record highs for months.

The sell-off traced its origins to Wall Street, where Apple announced price increases across its product line, rattling investors already anxious about whether the trillions poured into artificial intelligence would ever produce returns to match the valuations. Amazon and Microsoft compounded the pressure after the European Union signaled stricter digital competition rules targeting their cloud dominance. The Nasdaq and S&P 500, which had climbed earlier on strong earnings from Micron, reversed and closed lower.

Analyst Matt Maley of Miller Tabak framed the stakes plainly: if the largest technology companies — the hyperscalers — cannot stabilize, the rest of the market will struggle to advance. The euphoria surrounding AI is giving way to harder questions about whether valuations have outrun reality.

The damage spread across the continent. Tokyo's Nikkei fell five percent, dragged by SoftBank's thirteen-percent plunge after reports that OpenAI is considering delaying its IPO until 2027. Hong Kong, Shanghai, Taipei, Singapore, and markets across Southeast Asia and the Pacific all posted steep losses. The Kospi itself had already dropped ten percent on Tuesday before partially recovering, only to collapse again.

Beyond equities, oil prices resumed their slide, though a cargo ship damaged by an unknown projectile near the Strait of Hormuz briefly lifted prices on Thursday and raised fresh concerns about the fragile US-Iran truce. Iran's maritime authority warned that passages outside designated routes would not be guaranteed safe, and officials signaled plans for new maritime fees — a complication for ongoing peace negotiations.

Even softer-than-expected inflation data, which might ordinarily have buoyed sentiment, failed to offset the growing conviction that the technology sector has run too far too fast. What comes next depends on whether the largest tech companies can find their footing — and whether investors still believe the AI boom has room left to run.

The Seoul stock market fell hard on Friday, dropping more than eight percent in afternoon trading and triggering a brief halt to trading—the latest convulsion in what has been a brutal week for Asian equities. The Kospi's collapse was led by the chip makers that usually anchor the index: SK hynix and Samsung both shed more than five percent each, their losses reflecting a broader reckoning with the technology sector that has driven markets to record highs for months.

The sell-off began on Wall Street, where Apple announced price increases for laptops, tablets, and other products, citing rising costs. The move rattled investors already nervous about whether the trillions of dollars poured into artificial intelligence will ever produce returns that justify the valuations. Amazon and Microsoft added to the downward pressure after the European Union signaled they would face stricter digital competition rules because of their dominance in cloud computing. These were not small stumbles. The Nasdaq and S&P 500, which had climbed earlier in the day on strong earnings from chip maker Micron, reversed course and closed lower.

What's happening is a visible crack in the tech sector's armor. Matt Maley, an analyst at Miller Tabak, put it plainly: the question now is whether the largest technology companies—the so-called hyperscalers—can stabilize. If they continue to fall, he warned, the rest of the market will struggle to advance. The euphoria that has surrounded artificial intelligence for the past year is giving way to harder questions about whether company valuations have gotten ahead of reality.

The damage spread across Asia. Tokyo's Nikkei 225 fell five percent, dragged down by SoftBank, the technology investment giant, which plunged more than thirteen percent after reports that OpenAI, the maker of ChatGPT, is considering delaying its initial public offering until 2027. Hong Kong, Shanghai, Taipei, Singapore, Sydney, Jakarta, Wellington, Manila, and Bangkok all posted steep losses. The Kospi itself has been a study in volatility this week: it dropped ten percent on Tuesday, triggering its own trading halt, before bouncing back on Wednesday and Thursday, only to collapse again on Friday.

The turbulence extended beyond stocks. Oil prices resumed a downward slide that has marked the week, though they had ticked up slightly on Thursday after a cargo ship was damaged by what officials described as an unknown projectile off Oman's coast in the Strait of Hormuz. The incident raised fresh concerns about the fragile truce between the United States and Iran, which have been holding peace talks. Iran's maritime authority issued a warning that passages outside designated routes would not be covered by safe passage guarantees, and Iranian officials indicated they plan to introduce what they call maritime service fees—a move that could complicate ongoing negotiations with Washington.

By Friday morning in Asia, the broader picture was one of retrenchment. The Seoul Kospi closed down 8.2 percent at 8,199.81. Tokyo's Nikkei fell to 68,732.79, down five percent. Hong Kong's Hang Seng dropped 2.3 percent. West Texas Intermediate crude fell 1.7 percent to $70.68 a barrel. The losses came even as investors pared back expectations for interest rate increases after inflation data came in slightly lower than forecast. That should have been good news. Instead, it seemed to matter less than the growing sense that the technology sector, which has been the engine of the global market rally, may have run too far too fast. What happens next depends on whether the largest tech companies can stabilize—and whether investors decide the AI boom still has room to run.

A few cracks have developed in the tech sector recently. If they continue to decline, it's going to make it very tough for the rest of the market to advance.
— Matt Maley, Miller Tabak
Any passage through routes outside the framework designated by PGSA will not be covered by safe passage guarantees.
— Persian Gulf Strait Authority
The Hearth Conversation Another angle on the story
Inventor

Why did Seoul fall so much harder than other markets on Friday?

Model

Seoul is heavily weighted toward semiconductors and tech. SK hynix and Samsung are enormous companies there, and when chip stocks crack, the whole index moves. It's not just about those two companies—it's what they signal about whether the AI investment boom is sustainable.

Inventor

But Micron had strong earnings. Why didn't that hold the market up?

Model

Because one good quarter doesn't answer the real question investors are asking now: will the trillions spent on AI infrastructure ever pay off? Apple's price hikes and the EU's warning about Amazon and Microsoft's dominance in cloud computing made people wonder if these companies are already squeezing customers and regulators. That spooked people more than one chip maker's good results reassured them.

Inventor

The Kospi had a ten percent drop on Tuesday, then bounced. Why the wild swings?

Model

That's what happens when sentiment flips. Tuesday people panicked about valuations. Wednesday and Thursday, some thought the worst was over. Friday, they realized it wasn't. The trading halts are automatic circuit breakers—they kick in when moves get too violent, too fast. It's a sign of real fear.

Inventor

What does SoftBank's thirteen percent drop tell us?

Model

That the market is repricing the entire AI narrative. OpenAI delaying its IPO until 2027 suggests even the hottest AI company thinks it needs more time to prove its business model works. SoftBank has bet heavily on that story. When the story changes, SoftBank gets hit hard.

Inventor

Is this a correction or the beginning of something worse?

Model

That depends on whether the hyperscalers—Amazon, Microsoft, the chip makers—can stabilize. If they keep falling, the whole market loses its foundation. If they hold, this might just be a needed reset of expectations. Right now, nobody knows which it is.

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