Session at a Glance

KOSPI hammered 6.5% as chip selloff deepens while Hang Seng surges 4% on stimulus bets.

A brutal semiconductor rout collided with China stimulus hopes to split Asia-Pacific markets down the middle this week. The KOSPI plunged 6.5% after SK Hynix and Samsung Electronics were caught in a cascading global chip selloff — amplified by Strait of Hormuz geopolitical tensions that triggered a market-wide circuit breaker mid-week. SoftBank dragged the Nikkei down 1.3% after an Arm downgrade and AI valuation skepticism. MediaTek mirrored the pain in Taiwan.

Hong Kong was the standout, with the Hang Seng surging 4% as investors front-ran stimulus expectations after China’s Q2 GDP missed at 4.3% — the weakest since late 2022. Property investment fell 18% year-on-year, raising the odds of a Politburo policy response. Paradoxically, the GDP miss hurt the Shanghai Composite, which shed 3.8% as onshore investors focused on the growth deceleration rather than the stimulus call.

India’s Nifty edged higher on TCS earnings strength, while Australia’s ASX held gains on commodity resilience. Samsung SDI bucked Korea’s chip carnage on EV battery demand — a reminder that even within a single market, sector rotation can overwhelm the index-level narrative.

Here are the biggest movers across Asia-Pacific’s major exchanges for the week ending Saturday, July 18, grouped by market — each figure is the stock’s move over the full trading week.

Australia (ASX)

↑ WES +3.46%

Large-cap · 92.8 (local)

Why: Wesfarmers gained 3.5% on the week with no single catalyst — defensive retail and industrial conglomerate benefited from rotation into quality domestics as global risk appetite soured on tech and geopolitics.

Pattern: Steady grind higher consistent with defensive sector rotation during a risk-off week — large-cap quality names with domestic earnings attract flows when export-oriented and commodity plays face headwinds.

↓ NST -6.05%

Mid-cap · 19.24 (local)

Why: Northern Star dropped 6% despite elevated gold prices — mid-cap gold miners saw profit-taking after a strong multi-month run, with no specific company news driving the pullback.

Pattern: Mean-reversion pullback within an uptrend — gold equities often lag spot gold during consolidation phases as momentum traders rotate, particularly when broader risk appetite shifts toward other safe havens.

Hong Kong (HKEX)

↑ 6098 +6.59%

Mid-cap · 5.66 (local)

Why: CG Services (Country Garden Services) rallied 6.6% as Hong Kong property-adjacent names caught a bid on expectations that Beijing will unveil fresh property-sector stimulus after the weak Q2 GDP print.

Pattern: Stimulus-driven momentum trade — beaten-down property service names act as high-beta proxies for China property policy pivots, with the 4.3% GDP miss catalysing a sector-wide re-rating.

↓ 2628 -6.83%

Mid-cap · 26.48 (local)

Why: China Life Insurance fell 6.8% as weak Q2 GDP data and falling long-term bond yields pressured insurance sector investment returns and reinvestment rate expectations.

Pattern: Macro-driven sector derating — Chinese insurers move inversely with falling yields and GDP growth deceleration, as lower rates compress the spread between policy liabilities and portfolio returns.

China — Shanghai (SSE)

↑ 601857 +11.00%

Large-cap · 10.29 (local)

Why: PetroChina surged 11% as Strait of Hormuz tensions drove Brent crude higher, boosting energy names — the stock also benefits from its high-dividend defensive positioning during domestic growth slowdowns.

Pattern: Geopolitical catalyst driving a momentum breakout in energy — PetroChina acts as a safe-haven within Chinese equities during macro uncertainty, combining oil price upside with state-owned dividend appeal.

↓ 600030 -2.82%

Mid-cap · 27.6 (local)

Why: CITIC Securities slid 2.8% as the Shanghai Composite selloff weighed on brokerage stocks — lower trading volumes and risk-off sentiment in A-shares pressured commission-sensitive financials.

Pattern: Brokerages are high-beta plays on market turnover — the 3.8% Shanghai Composite weekly decline mechanically reduces fee income expectations, making securities firms a consensus underweight in risk-off weeks.

China — Shenzhen (SZSE)

↑ 000333 +4.71%

Large-cap · 82.71 (local)

Why: Midea Group gained 4.7% as the appliance giant benefited from stimulus expectations targeting the property sector and consumer durables — export strength also supported sentiment after solid June trade data.

Pattern: Stimulus-anticipation trade — Midea is a consensus pick for China consumer recovery plays, with its dual exposure to domestic property completions and overseas appliance demand providing a floor under the stock.

↓ 002415 -3.77%

Mid-cap · 33.15 (local)

Why: Hikvision fell 3.8% amid broader tech weakness in Chinese markets — the surveillance equipment maker also faces ongoing US entity-list overhang that resurfaces during periods of geopolitical stress.

Pattern: Macro-driven drift lower rather than idiosyncratic — Hikvision trades as a proxy for US-China tech decoupling risk, and weeks with elevated geopolitical tension (Strait of Hormuz, chip controls) tend to widen its discount.

Japan (TSE)

↑ 7974 +3.76%

Mega-cap · 7294 (local)

Why: Nintendo rose 3.8% after Hasbro announced a premium Zelda toy licensing deal, reinforcing the company’s IP monetisation strategy beyond gaming — the stock also benefited from defensive rotation out of AI-exposed Japanese tech.

Pattern: IP-monetisation catalyst layered on defensive rotation — Nintendo trades as a consumer-entertainment safe haven when AI/semiconductor names sell off, and the Hasbro deal validates the premium-IP licensing thesis.

↓ 9984 -14.85%

Mega-cap · 5424 (local)

Why: SoftBank plunged 14.9% after HSBC downgraded Arm Holdings, CEO Son’s $5T AI infrastructure claims drew skepticism, and the group sold its final Boston Dynamics stake — compounding an AI valuation overhang.

Pattern: Multiple negative catalysts triggered a momentum breakdown in a crowded AI proxy — the Arm downgrade challenged the core thesis, while the Boston Dynamics exit signaled portfolio rationalisation rather than growth conviction.

Singapore (SGX)

↑ H78 +4.51%

Mid-cap · 7.65 (local)

Why: Hongkong Land gained 4.5% as the Hong Kong property rally lifted Singapore-listed HK real estate plays — stimulus expectations and the Hang Seng’s 4% weekly surge provided a tailwind for the developer.

Pattern: Cross-listed sympathy trade — Hongkong Land is a direct proxy for HK commercial property sentiment, and the stimulus-driven Hang Seng rally mechanically lifts its NAV discount narrative.

↓ U11 -4.30%

Large-cap · 42.47 (local)

Why: UOB fell 4.3% as Singapore banks faced pressure from expectations of slower regional lending growth — the weak China GDP print and Strait of Hormuz disruptions clouded the Southeast Asian trade finance outlook.

Pattern: Macro-driven derating of ASEAN bank exposure — Singapore banks are leveraged to regional trade flows, and a week dominated by geopolitical supply-chain disruption and China growth fears compresses NIM expectations.

South Korea (KOSPI)

↑ 006400 +8.22%

Mid-cap · 4.345e+05 (local)

Why: Samsung SDI surged 8.2%, bucking the KOSPI rout — the battery maker rallied on strong EV demand signals and a multi-year Mercedes-Benz supply agreement, decoupling from the semiconductor carnage around it.

Pattern: Sector rotation within a collapsing index — Samsung SDI’s EV battery thesis is structurally independent of the memory-chip cycle, and the Mercedes deal gave institutional buyers a reason to bid the name while dumping SK Hynix.

↓ 000660 -15.74%

Large-cap · 1.842e+06 (local)

Why: SK Hynix crashed 15.7% as the global semiconductor selloff hit Korea hardest — a mid-week circuit breaker was triggered as Strait of Hormuz geopolitical fears compounded the chip sector rout, with SK Hynix accounting for a disproportionate share of KOSPI market cap.

Pattern: Cascading momentum breakdown in a concentrated index — SK Hynix and Samsung Electronics represent over 60% of KOSPI, so chip-sector selling becomes self-reinforcing as index funds and ETFs amplify the drawdown.

Taiwan (TWSE)

↓ 2454 -14.14%

Large-cap · 3370 (local)

Why: MediaTek dropped 14.1% as the global chip selloff spread to Taiwan’s semiconductor complex — the fabless designer was caught in broad de-risking of AI-adjacent names despite no company-specific negative news.

Pattern: Contagion selloff from the US chip sector — MediaTek trades as a high-beta semiconductor proxy in Asia, and weeks where Nasdaq chip names sell off heavily tend to produce outsized drawdowns in TAIEX semiconductor weightings.

India (NSE)

↑ TCS +10.27%

Mega-cap · 2269 (local)

Why: TCS surged 10.3% after strong Q1 FY27 earnings (13.9% revenue growth, $9.5B TCV), a new ABB technology partnership, and Kotak Securities adding the stock to its model portfolio following prior underperformance.

Pattern: Earnings-driven mean-reversion rally — TCS had declined 16.6% over the prior month, so the Q1 beat and broker upgrade triggered aggressive short-covering and value-buyer accumulation from depressed levels.

↓ HDFCBANK -0.65%

Mega-cap · 819.6 (local)

Why: HDFC Bank slipped 0.65% in a quiet week for Indian private banks — the stock drifted lower ahead of quarterly results as investors rotated into IT names like TCS that were delivering immediate earnings catalysts.

Pattern: Sector rotation out of financials into IT — HDFC Bank’s modest decline reflects opportunity-cost selling rather than fundamental deterioration, as the TCS earnings surprise redirected institutional flows within the Nifty 50.

New Zealand (NZX)

↓ AIR -4.60%

Large-cap · 0.415 (local)

Why: Air New Zealand fell 4.6% as Strait of Hormuz tensions lifted jet fuel costs and clouded the demand outlook for Asia-Pacific carriers — airlines are first-order victims of geopolitical oil supply disruptions.

Pattern: Geopolitical headwind trade — airlines move inversely with crude in the short term, and the Hormuz-driven oil spike mechanically compresses margin expectations for fuel-intensive carriers with limited hedging.

Reading the Week

The exchange-by-exchange breakdown above surfaces both market-specific catalysts and cross-border themes. When multiple exchanges move together, look for a macro driver (USD move, commodity price, risk-on/off shift). Isolated single-exchange moves tend to reflect local earnings, regulatory news, or sector rotation.

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