Asia briefing — 2026-06-24

Asian markets today delivered whipsaw performance as investors violently reassessed the AI semiconductor trade, producing spectacular divergence between Korean memory chip names (rebounding sharply) and Taiwanese foundry exposure (extending losses). The session was defined by extreme intraday volatility in Seoul, where the KOSPI swung from +4% to -2% before settling up over 3%, while broader regional indices struggled as the Wall Street Big Tech rout continued to reverberate across Asia-Pacific trading desks.

A critical macro tailwind emerged from easing Middle East geopolitical risk, with progress in US-Iran negotiations and improved Strait of Hormuz tanker traffic pushing Brent crude down 3.05% to $74.73/barrel — its lowest level since before the US-Israel strikes on Iran in February — providing significant relief to energy-importing economies and helping Hong Kong break its losing streak. Goldman Sachs cut its Brent price forecast to $80/barrel for Q4 2026, expecting Persian Gulf crude exports to return to pre-war levels by end of July.

TL;DR

• South Korea's KOSPI surged 3.26% to 8,471 rebounding from Tuesday's 10% AI chip selloff
• Japan's Nikkei 225 rose 2.53% to 66,329.5 as Samsung HBM shipment news lifted tech sentiment
• Taiwan's TAIEX fell 2.24% as TSMC dropped 4% on AI sustainability concerns
• Brent crude fell 3.05% to $74.73/barrel — lowest since before US-Iran conflict began in February
• India's Nifty 50 gained 0.83% outperforming amid regional tech volatility on oil price relief

South Korea: Wild Reversal in Memory Chips Drives 3.26% KOSPI Surge

The KOSPI closed at 8,471.02 (+3.26%) in one of the most volatile sessions in recent memory, recovering dramatically from Tuesday's catastrophic 10% plunge that triggered global tech selloff concerns.

Intraday volatility was extraordinary: the index surged as much as 4% in morning trade, briefly reversed to -2% at midday, then recovered to close near session highs as institutional buyers aggressively accumulated Samsung Electronics and SK Hynix shares. This violent price action reflects forced liquidation unwinds and algorithmic rebalancing after Tuesday's circuit-breaker-level moves, with market participants explicitly describing the session as dealing with "chip-wreck" fallout.

Samsung Electronics led the rebound with an approximately 8% gain after the company announced it had begun shipping samples of its latest high-bandwidth memory (HBM) chip to customers globally — a concrete positive catalyst distinguishing today's Korean move from pure technical bounce. SK Hynix added roughly 1%. The recovery in these two stocks alone accounted for the majority of the index's gains, underscoring the extreme single-stock risk embedded in Korean equity exposure.

The bounce reflects both technical factors (oversold conditions after Tuesday's massacre) and a genuine fundamental catalyst (Samsung HBM shipment confirmation). However, underlying concerns about AI hardware demand sustainability remain unresolved, making this recovery fragile ahead of Thursday's Micron earnings that will provide crucial guidance on memory chip pricing and AI infrastructure spending.

Won dynamics: The Korean won weakened 0.93% to 1,546.91 per dollar despite the equity surge — suggesting domestic rather than foreign institutional buying drove the KOSPI rally, or that importers/corporates used equity strength to build dollar hedges.

Japan: Nikkei Rises 2.53% to 66,329.5 on Samsung HBM and Tech Rebound

Japan's Nikkei 225 rose 2.53% to close at 66,329.5, benefiting from the regional technology rebound and positive spillover from Samsung's HBM announcement. The TOPIX also advanced, rising 1.41% to a new record high of 3,957.17, demonstrating broad-based strength rather than just index heavyweight moves.

Japanese semiconductor equipment makers and electronics names led the advance, with Tokyo Electron and Advantest participating in the AI hardware recovery trade. The yen's continued weakness near 150+ per dollar provides an additional structural tailwind for Japanese technology exporters.

The Nikkei's advance is notable given the broader uncertainty — it suggests Japanese equities are benefiting from their more balanced sector composition compared to Korea and Taiwan's concentrated semiconductor exposure, with financials, industrials and consumer names providing ballast alongside tech.

Taiwan: TSMC Weakness Drives 2.24% TAIEX Decline Amid AI Skepticism

Taiwan's TAIEX fell to 46,043.60 (-2.24%), extending losses as foundry sector weakness overshadowed the Korean memory chip rebound, highlighting sharp sector divergence within Asia's semiconductor complex.

TSMC dropped approximately 4%, acting as the primary index drag and reflecting continued institutional skepticism about AI capex sustainability. Unlike Korean memory names (which benefit from tight supply and HBM pricing power), TSMC faces concerns about utilization rates, advanced node economics, and whether hyperscaler customers will moderate spending.

The divergence between Taiwan's losses and Korea's gains illustrates the fundamental sector split: memory chips (Samsung, SK Hynix) benefit from tight supply dynamics and HBM pricing power, whereas foundry/fab operations (TSMC) face demand moderation concerns. The 8% Samsung surge versus 4% TSMC decline illustrates this split precisely.

The TAIEX's 2.24% decline places the index in correction territory from recent highs, with the MSCI Asia ex-Japan index down for a second consecutive session led by technology shares. Taiwan dollar moved modestly, declining 0.12% to 31.718 per dollar.

China & Hong Kong: Modest Gains as Oil Relief Offsets Tech Weakness

Mainland China's SSE Composite edged up 0.11% to 4,110.81, while Hong Kong's Hang Seng rose 0.33% to 23,412.18, with both markets benefiting from easing energy prices and geopolitical risk despite headwinds from the regional tech selloff.

Hong Kong's 0.33% gain is particularly significant as it snapped a five-day losing streak, with local market commentary explicitly attributing the recovery to improved risk sentiment from US-Iran negotiation progress and lower oil prices. Brent falling to $74.73/barrel — its lowest since before the conflict began — materially eases inflation concerns for China's economy as the world's largest oil importer.

Interestingly, Hong Kong investor appetite for AI exposure remains strong despite the selloff: a leveraged ETF linked to SK Hynix has become the city's largest ETF by assets, demonstrating continued retail and institutional enthusiasm for semiconductor plays. This positioning makes Hong Kong vulnerable to further Korean tech weakness but also positions the market for sharp rebounds if memory chip names stabilise.

Mainland China's marginal SSE gain reflects cautious trading ahead of mid-year policy signals. The People's Bank of China maintained stable liquidity conditions with no major policy shifts. The yuan weakened modestly to 6.7983 (+0.11% vs USD), while the Hong Kong dollar held stable at 7.84 (-0.01%).

India: Nifty 50 Outperforms With 0.83% Gain on Defensive Positioning

India's Nifty 50 rose 0.83% to 24,021.65, materially outperforming regional peers. The Sensex gained approximately 0.86% to 76,856, with banking and IT stocks as primary drivers. The market's lower beta to global semiconductor cycles and stronger domestic growth narrative provided downside protection during the Asian tech rout.

Lower oil prices are a significant positive for India as a major energy importer. Brent at $74.73/barrel reduces current account deficit concerns and eases imported inflation pressure, giving the Reserve Bank of India more room to manoeuvre. The rupee traded at 94.665 (-0.08% vs USD), remarkably stable given global risk-off flows.

Sectoral performance showed financials and consumer discretionary leading gains. Tech Mahindra, Dr Reddy's, ICICI Bank and Infosys were among the top Nifty 50 gainers, rising between 1% and 3%.

Southeast Asia: Indonesia Underperforms on MSCI Decision

Indonesia's IDX Composite fell 3.56% to 5,883.88, the region's worst performance. The decline was directly triggered by MSCI's June 23 decision to retain Indonesia's Emerging Market status but set a November 2026 deadline for transparency reforms — disappointing investors who had hoped for a more decisive resolution. The threat of a formal Frontier Market reclassification consultation if reforms are insufficient has dampened institutional sentiment.

Thailand's SET Index rose 0.47% to 1,548.22, benefiting from oil price relief given the country's energy import dependence. The baht weakened modestly to 33.40 (+0.57% vs USD).

Energy: Brent Falls to $74.73, Goldman Cuts Forecast to $80

Crude oil extended its dramatic decline on June 24. Brent futures for August fell 3.05% to $74.73/barrel — the lowest level since before US-Israeli strikes on Iran began in February. WTI fell approximately 3% to $71.02/barrel. Both benchmarks have now shed approximately 40% from their peak levels during the height of the conflict.

The decline reflects: (1) IMO security guarantees enabling vessels to transit Hormuz, with more than 11,000 stranded seafarers beginning evacuation; (2) UAE oil exports rebounding to nearly 85% of pre-conflict levels; (3) Iran exporting over 30 million barrels in the past week; and (4) a 60-day US waiver now permitting global buyers to purchase Iranian crude.

Goldman Sachs cut its Brent price forecast to $80/barrel for Q4 2026, down from $90, expecting Persian Gulf crude exports to return to pre-war levels by end of July — one month earlier than previously expected. Trump urged a DOJ probe into fuel prices, accusing oil companies of not passing on crude price declines to consumers.

Currency Markets

The Korean won's 0.93% depreciation despite KOSPI's 3.26% surge is notable, suggesting domestic rather than foreign buying drove the equity rebound.

Central Bank Watch

Bank of Japan: No new policy decisions. TOPIX reaching a record high of 3,957.17 alongside Nikkei's 2.53% gain suggests equity markets are comfortable with the BoJ's gradual normalization path. Yen weakness near 150+ continues to support exporter earnings.

People's Bank of China: Routine open market operations, no policy shifts. Yuan managed at 6.7983. Lower oil prices ease imported inflation, potentially giving PBoC more flexibility.

Reserve Bank of India: No new announcements. Rupee stability at 94.665 and lower oil prices are constructive for RBI's managed float approach.

Bank Indonesia: No new rate decisions following last week's 100bps of hikes to 5.75%. MSCI decision and IDX decline of 3.56% add pressure to an already stressed market environment.

Outlook

Critical near-term catalysts:

• Micron earnings (Thursday) — definitive reality check on AI memory chip demand, HBM pricing and hyperscaler capex sustainability. Will either validate the Korean rebound or reinforce Taiwanese foundry skepticism
• Strait of Hormuz reopening — IMO security guarantees and growing tanker traffic suggest normalisation underway. Full reopening would push Brent toward Goldman's $80 Q4 target
• China mid-year policy signals — Politburo meetings could provide stimulus clarity materially impacting mainland and Hong Kong equities
• MSCI Indonesia reforms — OJK/BEI must demonstrate credible implementation by November or face formal Frontier Market consultation

Key risks:

• Further AI hardware demand disappointment extending "chip-wreck" beyond memory into broader tech
• US-Iran nuclear talks failing, reversing Hormuz reopening and oil relief
• Fed maintaining higher-for-longer rhetoric strengthening USD and pressuring Asian currencies
• China property sector stress resurfacing through developer defaults

Key Data Points

FAQ

Q: Why did South Korea surge 3.26% while Taiwan fell 2.24% when both are semiconductor-heavy markets? A: The divergence reflects subsector positioning and a genuine catalyst. Korea's KOSPI rebounded on Samsung's announcement that it had begun shipping samples of its latest HBM chip to customers globally — a concrete positive for memory chip pricing and supply tightness. Taiwan's TAIEX is weighted toward TSMC and foundry exposure facing concerns about AI capex sustainability and utilization rates. Memory chips benefit from tight supply dynamics and HBM pricing power; foundry/fab operations face demand moderation. The 8% Samsung surge versus 4% TSMC decline illustrates this fundamental sector split precisely.

Q: How significant is oil's decline to $74.73 for Asian markets and which economies benefit most? A: The decline from $97+ peak levels to $74.73 represents approximately a 23% fall and is materially positive for energy-importing Asian economies. China benefits most as the world's largest oil importer — lower oil eases imported inflation, improves the current account, and gives PBoC more monetary flexibility. India benefits similarly, with rupee stability at 94.665 reflecting reduced current account pressure. Southeast Asian importers (Thailand, Philippines, Vietnam) gain from lower energy costs. Korea and Taiwan benefit indirectly through reduced manufacturing input costs. Goldman Sachs expects Brent to stabilise around $80 in Q4 as Persian Gulf supply normalises fully by end of July.

Q: Is the Korean rebound sustainable or just a technical bounce from Tuesday's 10% crash? A: Today's KOSPI recovery has both technical and fundamental elements — unlike a pure dead-cat bounce. Samsung's HBM shipment announcement provided a genuine positive catalyst distinguishing today's move from simple short-covering. However, the extreme intraday volatility (swinging from +4% to -2% before settling +3.26%) and the won's 0.93% depreciation despite equity gains suggest foreign buying was limited. Sustainability depends critically on Thursday's Micron earnings — if memory chip pricing and AI server demand disappoint, Korean names will likely retest lows. The market is in "wait-and-see" mode with elevated positioning risk despite today's sharp bounce.