Market Capitalization Surge and Valuation Disparities Among AI Memory Leaders
Samsung Electronics surged 5.8% to a record 317,000 won on May 29, pushing its combined market cap with preferred shares past 2,150 trillion won, while SK Hynix rose 1.9% to 233,300 won, reaching 1,662 trillion won. https://v.daum.net/v/20260529160901175 The leap followed UBS’s 1625-dollar target for Micron, citing a “normal valuation” shift as AI adoption redefines memory semiconductor demand. “Market participants are reassessing valuations, with AI’s structural impact on memory demand likely to sustain re-rating,” UBS noted, contrasting Micron’s 15x PER against Samsung and SK Hynix’s 6-7x multiples.
The surge reflects broader market optimism about AI infrastructure. Samsung’s HBM4E sample shipments and partnership with AI startups like Antropic underscored its strategic positioning, while SK Hynix’s 89.72% market cap relative to Samsung signaled lingering valuation gaps. https://v.daum.net/v/20260529160901175 Analysts linked the momentum to U.S.-Iran MOU talks and a 1.00% rise in the Philadelphia Semiconductor Index, though the KOSDAQ’s four-day decline highlighted sectoral imbalances.
UBS and Mizuho Forecast Long-Term AI-Driven Memory Demand
UBS’s analysis emphasized a paradigm shift: “AI’s structural impact on memory demand will outlast cyclical semiconductor patterns.” The firm cited 2026-2027 supply-demand imbalances, with memory chips remaining “AI’s backbone.” https://stock.mk.co.kr/news/view/1096440 This aligns with Mizuho’s forecast of sustained HBM demand, as global AI investments accelerate.
Micron’s valuation premium reflects investor confidence in its AI-specific capabilities. “Market participants are reassessing valuations, with AI’s structural impact on memory demand likely to sustain re-rating,” UBS noted, contrasting Micron’s 15x PER against Samsung and SK Hynix’s 6-7x multiples. https://stock.mk.co.kr/news/view/1096440 However, SK Hynix’s 2026-2027 supply constraints could narrow this gap, as its HBM market share faces pressure from Samsung’s innovations.
Investor Flows Contrast Institutional Buying with Retail Selling
While institutional investors bought 2.3 trillion won of Samsung and SK Hynix shares, retail and foreign buyers sold 1.4 trillion won and 1.694 trillion won, respectively. https://v.daum.net/v/20260529160901175 This divergence mirrored broader market dynamics: the KOSPI hit a record high, but the KOSDAQ slumped, as liquidity concentrated in large-cap tech stocks.
The trend raised concerns about semiconductor sub-component firms, which fell amid leveraged product launches. “Recent market flows show a clear preference for top-tier memory players, sidelining smaller suppliers,” one analyst said. https://contents.premium.naver.com/toptrader1/toptrader7/contents/260529163233727ia This imbalance could intensify if AI demand further consolidates market power among the “Big Three.”
Risks to AI Memory Boom Include Spending Slowdowns and Geopolitical Tensions
The memory sector’s trajectory hinges on AI adoption rates and supply chain stability. UBS warned that “a slowdown in AI infrastructure spending could trigger volatility,” while Mizuho emphasized 2026-2027 supply shortages. https://stock.mk.co.kr/news/view/1096440 Meanwhile, geopolitical tensions—like the U.S.-Iran MOU—could disrupt global markets, as seen in the 0.58% S&P 500 rise linked to improved risk sentiment.
For Samsung and SK Hynix, the challenge lies in maintaining margins amid rising R&D costs. Micron’s valuation premium may narrow if it fails to scale AI-specific solutions, but its 15x PER suggests sustained investor optimism. As AI reshapes memory demand, the “Big Three” will define the industry’s next chapter.
