Here’s the Asia-Pacific Daily Preview post for Wednesday, June 3, 2026:

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Korea’s KOSPI just posted its best session in months while mainland China slipped further behind — and the overnight US session, led by small caps and cyclicals rather than mega-cap tech, suggests today’s Asian open will test whether that divergence deepens or corrects.

Where Asia Closed Yesterday

The standout was Seoul. The KOSPI surged 3.68% on Monday, its strongest session in recent memory, as Korean semiconductor and battery names caught a fresh wave of global AI hardware demand. Taiwan’s TAIEX rose 1.35% on the same trade, with TSMC-adjacent supply chain names leading.

Japan’s Nikkei 225 added 0.91% to close at 66,934, supported by a weaker yen (USD/JPY at 160) that continues to flatter exporter earnings. Hong Kong’s Hang Seng gained 0.86% to 25,398, though the move felt more like technical positioning than conviction — volume was thin heading into the midweek.

The weak spots told a different story. China’s Shanghai Composite dipped 0.27%, but the real damage was in Shenzhen, down 1.51% as growth and small-cap names sold off. That mainland weakness stands in sharp contrast to the tech-driven rally everywhere else in Northeast Asia. India’s Nifty 50 fell 0.70% to 23,383, extending its recent softness. New Zealand’s NZX 50 slipped 0.52%. Australia’s ASX 200 was effectively flat at -0.03%, stuck between commodity tailwinds and domestic uncertainty.

US Overnight Snapshot

Wall Street delivered a mildly positive session with a rotation flavour. The S&P 500 edged up 0.13% and the Nasdaq Composite gained just 0.03%, but the Russell 2000 outperformed at +0.93% — a clear small-cap and cyclical bid.

Sector action reinforced the theme: Technology (XLK) rose 1.25%, driven by AI infrastructure names — Broadcom caught an upgrade cycle tied to Alphabet’s AI spending, while optical networking stocks (Lumentum, Coherent) rocketed on agentic AI demand. Energy (XLE) gained 1.15% and Materials (XLB) added 1.18%. The VIX fell to 15.8, down 1.74%, signalling no stress in the system.

For Asia, the read is constructive. The tech bid supports another leg for Korean and Taiwanese semis at today’s open. The Russell outperformance and low VIX suggest risk appetite is broadening, not narrowing — a tailwind for regional cyclicals and commodity exporters.

Commodity + FX Watch

Commodities moved decisively. Copper rallied 2.23% — the strongest move in the complex — which should put a bid under ASX miners (BHP, Rio Tinto, South32) and support Southeast Asian metals exporters at today’s open. WTI crude rose 1.91% to $93.90, a positive signal for energy-heavy KOSPI names and ASX energy producers. Gold added 0.95% to around $4,520, reflecting lingering hedging demand even in a risk-on tape.

On FX, the AUD/USD slipped 0.23% to 0.716 despite the commodity strength — a disconnect worth watching. If the Aussie can’t rally with copper at these levels, it suggests domestic headwinds are capping upside. USD/JPY pushed to 160, extending yen weakness that directly boosts Nikkei exporters (Toyota, Sony, Keyence) but raises intervention risk from the BOJ. Any verbal jawboning from Tokyo today would be worth noting.

What to Watch Today

• Korean semis on a two-day streak: After Monday’s 3.68% KOSPI surge, Samsung and SK Hynix will be watched for follow-through. The US optical networking rally and Broadcom’s AI spending narrative feed directly into Korean memory and foundry demand.
• China’s mainland divergence: Shenzhen’s 1.51% drop against broad regional strength is the widest gap in weeks. Watch for any policy signals from Beijing — without a catalyst, mainland could continue underperforming while Hong Kong holds up on international flows.
• ASX resource names at the open: Copper +2.23% and oil +1.91% should lift BHP, Fortescue, and Woodside. The test is whether the flat ASX from Monday finally breaks higher on the commodity bid, or whether the weak AUD is signalling something the index hasn’t priced.
• BOJ intervention watch: USD/JPY at 160 is historically sensitive territory. Any verbal or actual intervention from Japanese authorities would whipsaw Nikkei futures and spill across regional FX pairs.

Bottom Line

The overnight setup leans risk-on for Asia’s Wednesday session. Low VIX, broad US gains led by cyclicals, and strong commodity prices all favour the region’s exporters and resource names. The main question is whether China’s mainland can stop underperforming — until that changes, the Luna3 view is that Northeast Asia’s tech corridor (Seoul, Taipei, Tokyo) remains the cleaner trade, while ASX miners get a commodity-driven tailwind that’s been building for days.

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