Marvell Q1 FY2027 was not a simple EPS beat. It confirmed that AI data center bottlenecks are spreading across custom XPUs, optical interconnects, scale-up networking, FC-BGA substrates, MLCCs, silicon capacitors, and test sockets. This post maps the Korea semiconductor read-through in order: Samsung Electro-Mechanics, Samsung Electronics, SK Hynix, and then ISC, Leeno Industrial, and TSE.
KOSPI at 8,229 in dual Bull regime; SK Square leads meta-screener with ROE 32% and smart-money absorption; Gigavis posts OP +777% YoY with top PEAD score.
Research OS local data shows Korea's 20-day advance-decline ratio falling from 113.1 in mid-April to 67.3 on May 26. KOSPI and KOSDAQ are not in a broad risk-on phase; money is compressed into AI infrastructure, semiconductor bottlenecks, back-end names, substrates, shipbuilding and defense.
A valuation and trading framework for HD Hyundai Heavy Industries, separating TerraPower Natrium SMR optionality from near-term shipbuilding earnings, data-center power engines, defense upside and institutional flow.
A reframed analysis of Samsung Electronics' DS stock-bonus issue around two questions: whether the bonus formula signals an internal memory supercycle view through 2028, and how much incremental treasury-stock buying the plan could create.
A mid-cycle performance review of 207 Korea Invest Insights Korean-language articles and 593 article-stock pairs. AI infrastructure, semiconductors, power and smart-money screening worked best; gaming, biotech, K-beauty, listed VC and some idiosyncratic deep dives were more mixed.
KOSPI market-cap-weighted foreign ownership remains high, but Samsung Electronics foreign ownership is down to 48.32% and SK Hynix to 51.62%. The key signal is no longer the ownership level alone, but whether five-day foreign net selling slows.
AI server passive-component bottlenecks are not about a shortage of GPUs. They are about the higher-spec MLCCs, silicon capacitors, inductors, and filters needed to stabilize the huge transient power demands of GPU/HBM systems. This note explains the bottleneck and why it matters for Samsung Electro-Mechanics.
Samsung Electro-Mechanics has crossed roughly KRW 100 trillion in market value. Overtaking Hyundai Motor common stock would require about KRW 1.80 million per share, while a KRW 150 trillion benchmark requires about KRW 2.01 million. Murata proves that AI server passive-component bottlenecks can command carmaker-scale market caps, but SEMCO still needs a credible 2028 path toward KRW 4 trillion-plus operating profit and 20% group margin.