Investing.com — Asia stocks retreated on Tuesday as investors questioned whether future earnings growth can justify elevated artificial intelligence-related valuations, sending semiconductor shares lower despite Samsung Electronics  posting another quarter of record profit.

Broader risk sentiment remained relatively stable, but renewed selling in Asia’s AI supply chain dominated regional trading after Samsung’s earnings failed to dispel concerns over whether soaring investment in artificial intelligence infrastructure can continue to generate returns that justify the sector’s rich valuations.

All three major U.S. stock ​indexes ended higher on Wall Street overnight, while Futures slipped 0.6% and Futures lost 0.2% in Asian trading.  

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Samsung earnings fail to reassure as AI valuation concerns persist

South Korea once again dictated regional sentiment after Samsung Electronics (), the world’s largest memory-chip maker, reported another quarter of record operating profit, underscoring continued demand for high-bandwidth memory chips used in artificial intelligence servers.

Samsung shares slid over 8% after the results. The selling dragged the down 6.9%, making it the region’s worst-performing major benchmark.

The selloff followed a powerful rally across semiconductor shares in recent months, with investors increasingly debating whether future earnings growth can keep pace with current valuations after hyperscalers committed hundreds of billions of dollars to AI infrastructure.

“The fear is that if investments moderate over time, memory demand growth could slow and affect the profit outlook for chipmakers,” said Vasu Menon, Managing Director of Investment Strategy at OCBC.

Menon said investors were increasingly looking beyond Samsung’s strong quarterly earnings toward the sustainability of record memory-chip profits, while recurring concerns over whether hyperscalers will ultimately generate sufficient returns on AI spending continue to cloud sentiment across the semiconductor sector.

The weakness spread across the broader semiconductor supply chain. SK Hynix Inc () dropped over 8% after formally launching the marketing process for its planned U.S. listing on Monday, while Japan’s tumbled 1.6%. The broader slipped 0.2%.

Selling spread across Asia’s AI hardware supply chain beyond South Korea’s memory-chip makers. Nvidia’s largest AI server assembly partner, Hon Hai Precision Industry Co Ltd () (Foxconn), fell 1.7% despite reporting stronger-than-expected June and second-quarter revenue, while Taiwan’s MediaTek Inc () dropped nearly 3%.

Japan’s Murata Mfg Co () tumbling 8.3%. The broader fell over 1%.

Investors await regional inflation, central banks

Outside North Asia, regional markets were more resilient despite renewed geopolitical uncertainty.

climbed after reports Iran fired missiles toward commercial vessels transiting the Strait of Hormuz, although gains remained limited amid expectations that higher OPEC+ production should help offset supply risks.

Mainland Chinese equities also weakened, with the falling 1% and the losing 1.2%, while Hong Kong’s }
eased 0.4%.

India’s index opened flat, while the advanced 0.4%. Singapore’s climbed 0.7%, although Australia’s slipped 0.4% and Malaysia’s edged down 0.2%.

Attention is now shifting from corporate earnings to a busy week of regional macro events that could shape expectations for monetary policy across Asia.

Thailand’s June inflation slowed to 2.4% in June from 2.8%, broadly in line with expectations as lower energy costs helped ease price pressures.

Investors will next watch Philippines and Taiwan CPI data due later this week, followed by China’s June inflation report and Bank Negara Malaysia’s policy decision on Thursday. The Reserve Bank of New Zealand is also scheduled to announce its policy decision on Wednesday, with markets broadly expecting a 25-basis-point rate increase after policymakers adopted a more hawkish stance in recent months.

Beyond regional data, investors will also parse Wednesday’s Federal Reserve for fresh insight into policymakers’ thinking after softer U.S. labour-market data tempered expectations of further tightening, while the start of earnings season will test whether the AI investment boom is continuing to translate into corporate profits.