The AI semiconductor rally is still earnings-backed, not pure narrative. But higher long rates, data-center financing structures and hyperscaler FCF pressure are starting to cap AI infrastructure multiples. The regime is yellow, not red.
The June 5 U.S. jobs shock looks less like a one-day fear washout and more like the hard-data version of the May long-rate shock. For Korean equities, the key is not prediction but discipline: watch U.S. 10-year yields, CPI, foreign futures flows, KOSPI 8,000, and Samsung Electronics / SK Hynix relative strength.
After the strong U.S. May employment report, the key macro cluster is May CPI on June 10, Korea's derivatives expiry on June 11, the BOJ on June 15-16 and the FOMC on June 16-17. For Korean equities, the right framework is not a one-number CPI forecast but a reaction function around core CPI, the U.S. 10-year yield, USD/JPY and foreign futures flows.
Jensen Huang's reported comment that Samsung Electronics, SK hynix and Micron are all qualified and in production for NVIDIA Vera Rubin HBM4 shifts the debate from qualification to allocation, yield, ASP and margin.
SpaceX's S-1 filing and reported $75 billion IPO are better read as a rebalancing event inside growth, AI, space and passive-index flows than as a system-wide liquidity drain. For Korea, the transmission channels are FX, foreign funding-source trades, HBM demand validation and space-defense theme flows.
GigaVis is not an AI chip maker or a substrate producer. It is an inspection, review, repair, automation and software equipment supplier for high-end FC-BGA / ABF substrates used in AI GPUs and ASICs. Its 2026 disclosed orders total KRW 29.41B, or 56.1% of FY2025 revenue, while the FY2025 mix was AOI/VRS/AOR-heavy with FA and software attached.
The AI Chip & Memory Forward P/E Map shows Samsung Electronics and SK hynix trading at the lowest P/E cluster in the AI chip basket. Micron deserves a U.S.-listed AI-memory proxy premium, but the Korean memory discount looks excessive if EPS durability holds.
Goldman lifted FY2025-2030 hyperscaler capex expectations to $5.3T, while Alphabet guided 2026 capex to $180-190B and a further increase in 2027. For Korean equities, the better read-through is not broad AI beta but power equipment, Samsung Electro-Mechanics, high-layer PCBs, optical links and eSSD/storage bottlenecks.
Broadcom's Q2 FY2026 result was not an AI-demand slowdown. It was an expectation reset. Q2 AI semiconductor revenue was $10.8B, Q3 guidance is $16.0B, and the FY2027 $100B+ AI semiconductor frame remains intact. For Korea, the read-through is HBM, FC-BGA, silicon capacitors, AI networking PCBs, packaging equipment and test.