South Korea’s KOSPI just posted its best single-session gain in weeks while Hong Kong sold off — and now a tech-led US rally overnight hands Asia a split playbook heading into Friday.

Where Asia Closed Yesterday

The standout was Seoul. KOSPI rocketed 3.68% to 6,579 — a move that dwarfed everything else in the region and likely reflects a combination of foreign inflows and semiconductor optimism filtering through the supply chain. Taiwan’s TAIEX rose 0.88% to 45,518, riding a similar chip tailwind.

Japan’s Nikkei 225 gained 0.83% to 67,524, supported by exporters benefiting from a steady yen (USD/JPY holding near 159). Mainland China was modestly positive — Shanghai Composite up 0.32% to 3,947 while the Shenzhen Component outperformed at +1.09%, suggesting retail and growth-oriented names attracted buyers.

The other side of the ledger told a different story. Hong Kong’s Hang Seng fell 0.83% to 25,440, giving back recent gains. Singapore’s Straits Times Index dropped 0.58% to 5,721. Australia’s ASX 200 slid 0.45% to 9,209, weighed down by resource stocks. India’s Nifty 50 was essentially flat at -0.15%. New Zealand’s NZX 50 edged up 0.46% to 13,801.

The pattern: tech-heavy, export-driven markets in North Asia outperformed, while commodity-linked and financials-heavy bourses lagged.

US Overnight Snapshot

Wall Street extended its run. The S&P 500 climbed 0.65% and the Nasdaq Composite gained 0.81%, with technology (XLK +1.01%) doing the heavy lifting. Financials (XLF +0.59%) added support. The Russell 2000 lagged at +0.26%, a sign that risk appetite stayed concentrated in large-cap growth rather than broadening out.

The VIX at 14.6 signals almost no fear — headlines described markets as “eerily calm” with investors chasing a FOMO-driven rally. That low-vol backdrop tends to support carry trades and risk-on positioning in Asian markets, particularly for Korean and Taiwanese tech names that track Nasdaq sentiment closely.

Individual stories that matter for Asia: Dell continuing to outperform Micron and AMD reinforces hardware demand narratives, while Bank of America’s cautious Nvidia note could inject some hesitation into AI-adjacent plays across HKEX and the TAIEX.

Commodity + FX Watch

Oil was the overnight mover. WTI crude dropped 2.59% to $81.10 — a meaningful decline that eases cost pressure for net importers like Japan, South Korea, and India. For ASX-listed energy producers and Singapore-listed oil services names, that’s a headwind at the open.

Gold held near $4,410, essentially flat (+0.07%), offering no directional signal. Copper ticked down 0.16% — not enough to move the needle for ASX miners, but the direction is worth watching if it accelerates.

On FX, AUD/USD was dead flat at 0.706, keeping Australian equities in a holding pattern against the greenback. USD/JPY at 159 remained steady — the weak yen continues to flatter Japanese exporters’ earnings in local-currency terms. No sudden moves to force intervention chatter.

What to Watch Today

• KOSPI follow-through: A 3.68% single-day surge demands a verdict — does Seoul build on it or give some back? Watch foreign net buying data at the open and Samsung/SK Hynix for clues on whether the semiconductor bid has legs.
• Hang Seng divergence: Hong Kong fell while mainland China gained, a split that often signals offshore fund rotation rather than domestic weakness. Track Alibaba and Tencent early for whether the US tech rally overnight pulls HKEX tech higher or sellers stay in control.
• Oil drag on ASX energy: With WTI down 2.59%, Woodside and Santos will likely open soft. Whether the broader ASX 200 can offset that through financials or gold miners sets the session tone for Australia.
• Yen stability check: USD/JPY at 159 is elevated but stable. Any move toward 160 could trigger verbal intervention noise from the Ministry of Finance, which would cap Nikkei upside quickly.

Bottom Line

The overnight setup leans risk-on for Asia’s tech-heavy markets — KOSPI and TAIEX should open with tailwinds from both their own momentum and Nasdaq’s strength. The oil drop complicates things for resource-heavy boards in Australia and Singapore. With VIX pinned below 15 and US equities grinding higher, the path of least resistance across the region is up — but Luna3 readers should watch whether that KOSPI surge attracts profit-takers or fresh buyers, because Korea’s direction will set the tone for Friday.

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