Chip-stock rout in Asia: Samsung and SK Hynix plunge as Broadcom chief warns of an AI 'casino'

Market sell-off and the trigger

Technology and memory stocks tumbled across Asian markets Tuesday as the AI-driven boom in chip-related names showed fresh signs of strain. South Koreas KOSPI index slid as much as 7% intraday, with marquee memory names Samsung Electronics and SK Hynix each falling more than 8%. Japans memory vendor Kioxia dropped over 12% and Taiwan Semiconductor Manufacturing Company (TSMC) eased by up to about 2% at one point.

The sell-off followed earlier losses among U.S. chip stocks and was amplified by investor concerns about stretched expectations for AI-related investments. Broadcoms CEO Hock Tan warned that current market sentiment resembled a casino: many investors, he said, do not fully understand what they are buying and hold extreme expectations for returns. Tan added that financing the rapid AI build-out could become a bigger problem than chip shortages, given rising interest rates and the burden they place on highly leveraged deals.

Broader pressures and technical strain

Additional pressure came from reports of rising competition in server memory. Bloomberg-cited reports suggested Chinese memory maker CXMT aims to bring higher-density server DRAM to market by 2026, a development that would add long-term pricing pressure on industry incumbents. Fund managers caution, however, that new entrants must still demonstrate competitive, scalable mass production before they materially change the market dynamics.

Technically, the KOSPI now sits about a third below its June record high and below its 200-day moving average a vulnerability that already prompted a brief suspension of programmatic trading after heavy foreign selling in October. Foreign investors have been net sellers, unloading more than $6.3 billion worth of Korean equities in the month to date, compounding the markets downward momentum.

What comes next

The central question for investors is whether the AI-led growth story can sustain itself through 2028 and beyond. Even record profits at Samsung failed to provide the stock with a rally last week, underscoring that top-line or near-term earnings wins may not restore confidence if broader financing and demand concerns persist.

Attention now turns to corporate results from major equipment and contract-manufacturing names. ASML and TSMC are due to report earnings this week, and their numbers will be closely watched for signs of how long the recent strong profit growth in semiconductors can last. Market participants will be watching indicators such as capex guidance, order backlogs, and comments on AI-related demand to gauge whether the sell-off reflects a temporary pullback or a more structural reassessment of the industrys growth runway.

In the near term, heightened volatility looks likely as investors reassess valuation multiples and the sustainability of AI-driven investment narratives. For many market watchers, the combination of lofty expectations, rising financing costs and potential new supply pressures creates a riskier backdrop for chip and memory stocks than seen over the past year.

Author: Ferdinand Hammer, wallstreetONLINE editorial team.