A practicing semiconductor engineer's daily read on global silicon news:
Korean chip names opened +6% as a 6-week SOX rally meets near-term catalysts in AMAT/NVDA earnings, while a 61.4% KOSPI semi concentration and Samsung union strike risk fuel volatility concerns.
Chase's Take — From an STA/backend engineer's seat, the real trigger this week isn't the union fight — it's AMAT's guidance (WFE bookings for the added HBM process steps) and NVDA's Vera Rubin / HBM4 contract guidance. JPMorgan's union risk pencils out to an OP cut from high-single to low-double digits, but as long as HBM4 qualification timing and DRAM contract negotiations stay quiet, the memory cycle itself doesn't break. Harvard Campbell's 'easy to switch competing models' worry holds for the inference cost curve, but it barely touches per-unit memory demand — every lab's common move is 'more HBM per same GPU.' The real risk in this 6-week +47% SOX rally is the opposite: with EUV, CoWoS, and HBM all supply-constrained, ASP pass-through to P&L has a lag that leaves consensus actually underestimating — if that snaps, a one-quarter sharp drawdown is on the table. Three Korea watch-points: AMAT formalizing its EPIC partner, the Samsung union strike vote, and whether NVDA holds Vera Rubin Ultra to 2027.
1. Samsung·SK hynix premarket +6% chip rally — next up: Cisco, AMAT earnings
TL;DR — Monday 5/11 KST open: Samsung 284,500 won (+5.96%), SK hynix 1.793M won (+6.35%), SK Square +7.92%. Friday's US SOX +5.5%, Micron +15.5%, Intel +14.0% rally lit the fuse. Kiwoom's Han Ji-young sees Cisco and Applied Materials earnings as the next inflection.
Source: Seoul Economic Daily — Samsung·SK hynix premarket +6% chip rally — next up: Cisco, AMAT earnings
2. After SK hynix's 109% rally: rotation into equipment, renewables, physical AI — Samsung Securities' Kim Jong-min
TL;DR — April through 5/8: SK hynix +109%, Samsung +61%, KOSDAQ +15% — vs US Philly Semi +47%, Dow +7%. With Samsung and SK hynix at 46% of KOSPI market cap, Samsung Securities' Kim Jong-min and Mirae Asset's Yoo Myung-gan see the next leg of capital rotating into chip equipment/materials, alternative energy, and physical AI.
3. JPMorgan's Jay Kwon: SK hynix may face bonus demands — Samsung union OP variable of 7–12%
TL;DR — Samsung union signals a general strike vote, demanding 15% of OP as performance bonus plus base pay hikes. JPMorgan's Jay Kwon estimates accepting the demands would cut operating profit 7–12%; a strike would cost the semi division 1–2% of revenue (4 trillion won+). Surging memory prices raise the risk of demand contagion to SK hynix.
4. Shinyoung's Kim Hak-kyun: chips haven't peaked — 60% of KOSPI earnings come from semis
TL;DR — Samsung, Samsung pref, and SK hynix accounted for 1,587 trillion won — 61.4% of this year's KOSPI market-cap gains. Shinyoung Securities research head Kim Hak-kyun argues chip price and earnings forecasts are rising faster than the index, leaving upside. Mirae Asset's Park Yeon-ju and IM Securities' Ko Tae-bong keep their structural-bull view.
5. Harvard's Campbell: 'AI models are easy to switch' — Samsung·SK hynix sustainability test
TL;DR — Harvard economist John Y. Campbell tells Korea Times that AI lacks the durable moats of Google, Amazon, or Meta — 'competing models are very easy to switch among.' He flags high PERs as a drag on future returns and warns Korea's geopolitical edge in chips may be temporary.
6. ITC confirms Innoscience infringed Infineon GaN patent — US import/sales ban (60-day review)
TL;DR — On 5/8 the US ITC affirmed last December's initial determination: China's Innoscience infringed Infineon's GaN patent, triggering a US import and sales ban. A 60-day presidential review remains; if it stands, China's footprint in AI data center and EV GaN power takes a major hit.
7. AI demand fills Vanguard's Singapore fab ahead of schedule — VIS: 'AI offsets all headwinds'
TL;DR — DIGITIMES' Monica Chen reports 5/10 that TSMC subsidiary Vanguard International Semiconductor is filling its new Singapore fab ahead of schedule on AI demand. VIS calls AI 'the dominant force shaping 2026 — largely offsetting geopolitical fragmentation and macro headwinds.'
