Session at a Glance

Samsung surges 10% on 90 trillion won buyback rumour, powering KOSPI’s post-crash rebound.

Asia-Pacific markets staged a relief rally on Tuesday after Monday’s brutal selloff that triggered circuit breakers across Seoul and dragged semiconductors lower globally. The catalyst was Samsung Electronics, which jumped nearly 10% on a Yonhap report that the company plans a 90 trillion won (~$59 billion) share buyback over three years to fund employee stock bonuses. That single name dragged KOSPI up 3.3%, reclaiming a fraction of Monday’s record 910-point loss.

Not every market joined the party. Taiwan’s TAIEX dropped another 2.2% as chip names like MediaTek extended losses — the global semiconductor repricing that started last week still has legs in Taipei. Tokyo Electron fell 4.2% in Tokyo, keeping the Nikkei pinned 0.9% lower even as Sony bounced on its US bond re-entry. Hong Kong outperformed on Tencent’s 3.4% gain — the WeChat Xiaowei AI agent rollout keeping the China tech AI narrative alive.

The cross-border theme is clear: markets with a Samsung or AI catalyst bid recovered; those still digesting peak semiconductor valuations lagged. All eyes now on Micron’s after-hours earnings tonight as the next litmus test for the AI trade.

Here are the standout movers across Asia-Pacific’s major exchanges for the session of Wednesday, June 24, grouped by market.

Australia (ASX)

↑ CSL +2.63%

Mega-cap · 115 (local)

Why: No specific catalyst — CSL rallied as a defensive biotech bid in a session where investors rotated out of growth/semis into healthcare and quality names.

Pattern: Classic risk-off sector rotation into defensive mega-caps. CSL often outperforms on days when tech sells off — mean-reversion buyer interest after recent FY26 guidance cut weakness.

↓ RIO -1.19%

Mega-cap · 173.9 (local)

Why: Iron ore weakness and broader mining sector softness weighed on Rio Tinto. Rare earths competition narrative (American Rare Earths Nasdaq listing) added minor headwind to sentiment.

Pattern: Commodities momentum stall — iron ore has been range-bound and Rio is tracking the commodity, not company-specific news. Move is mild and fits normal daily volatility for a mega-cap miner.

Hong Kong (HKEX)

↑ 0700 +3.38%

Mega-cap · 428.8 (local)

Why: Tencent gained on continued excitement around its WeChat Xiaowei AI agent rollout, now in limited beta testing — positioning WeChat’s 1.4 billion users as an AI distribution moat.

Pattern: AI catalyst momentum continuation. Tencent spiked 10% on the initial Xiaowei report in early June, pulled back, and is now building a higher base. Constructive re-accumulation pattern above the June breakout level.

↓ 2628 -3.34%

Mid-cap · 28.32 (local)

Why: China Life dropped with no specific headline — likely profit-taking after the insurer’s strong H1 rally and broader rotation out of Chinese financials into tech on the session.

Pattern: Sector rotation away from financials into AI/tech names. Isolated move for China Life — Hang Seng was green, so this looks like a mean-reversion fade after an extended run rather than systemic selling.

China — Shanghai (SSE)

↓ 601166 -3.00%

Mid-cap · 17.12 (local)

Why: Industrial Bank fell 3% with no clear catalyst — Chinese bank stocks broadly soft as market focus shifted to tech plays. May also reflect concerns about net interest margin compression ahead of potential PBoC easing.

Pattern: Financials underperformance in a tech-led session is a familiar rotation pattern in China. Move is consistent with the A-share sector rotation theme — banks lag when growth/AI names attract flow.

China — Shenzhen (SZSE)

↑ 002415 +8.34%

Mid-cap · 34.03 (local)

Why: Hikvision surged 8.3% as China’s AI and surveillance tech sector caught a bid — the company’s machine-vision and AI edge-computing products position it as a domestic AI infrastructure play alongside the Tencent Xiaowei narrative.

Pattern: Momentum breakout on heavy volume. Hikvision is a high-beta China AI proxy — the +8% single-session move suggests institutional accumulation, likely part of a broader domestic AI theme trade across Shenzhen-listed tech.

↓ 300059 -3.44%

Mid-cap · 20.18 (local)

Why: East Money Information fell 3.4% with no specific headline — likely profit-taking in the retail brokerage/fintech space as trading volumes normalise after recent volatility spikes.

Pattern: Mean-reversion pullback after elevated trading volumes boosted fintech platform stocks last week. East Money tends to track A-share turnover — when volatility compresses, these names give back gains.

Japan (TSE)

↑ 6758 +2.88%

Mega-cap · 3250 (local)

Why: Sony bounced 2.9% as the company returned to the US bond market with 5-year and 10-year notes rated A2/A+ — a confidence signal in balance sheet strength. Broader rebound from Monday’s Nikkei rout also helped.

Pattern: Post-selloff dead-cat bounce meets positive corporate catalyst. Sony’s 15% gain over 30 days prior to this session was undercut by Monday’s rout — today’s move looks like dip-buying into the bond issuance headline.

↓ 8035 -4.19%

Mid-cap · 6.99e+04 (local)

Why: Tokyo Electron fell 4.2% as the global semiconductor repricing continued — chip equipment names are bearing the brunt of the valuation reset ahead of Micron’s earnings tonight.

Pattern: Momentum breakdown continuation. Tokyo Electron has lost roughly 15% over 4 weeks as the semiconductor supply chain reprices. Tonight’s Micron report is the binary catalyst — until then, sellers have the tape.

Singapore (SGX)

↑ H78 +2.53%

Mid-cap · 7.29 (local)

Why: Hongkong Land rallied 2.5% with no specific headline — likely benefiting from the broader Hong Kong/China property sentiment improvement and a mild risk-on tone in ASEAN markets.

Pattern: Sector rotation into beaten-down property names. HK Land has underperformed significantly over the past year — today’s move looks like mean-reversion interest as China stimulus hopes stay alive.

↓ O39 -0.60%

Large-cap · 24.92 (local)

Why: OCBC dipped 0.6% despite news of doubling its wealth advisory team in Indonesia following an HSBC deal — mild profit-taking in an otherwise steady Singapore bank sector session.

Pattern: Negligible move within normal daily noise for a large-cap bank. The Indonesia expansion is structurally positive but already priced in. No pattern signal — this is flat-tape behaviour.

South Korea (KOSPI)

↑ 005930 +9.84%

Mega-cap · 3.405e+05 (local)

Why: Samsung surged on a Yonhap report that the company plans a 90 trillion won (~$59B) share buyback over three years to fund employee stock bonuses — the biggest single-day catalyst since the May AI chip rally.

Pattern: Massive short-covering bounce off Monday’s circuit-breaker crash. Samsung opened up 7%, faded intraday, then re-bid into the close. The buyback rumour gives fundamental cover to what is partly a technical snapback from extreme oversold conditions.

↓ 035420 -1.53%

Mid-cap · 1.994e+05 (local)

Why: Naver fell 1.5% despite KOSPI’s broad recovery — internet platform names lagged as the Samsung buyback narrative sucked flow into hardware/semis and away from software/search plays.

Pattern: Relative underperformance within a recovery session signals weak positioning. When the index bounces 3.3% and a major name still drops, it suggests sellers are using the bounce to exit. Watch for follow-through weakness.

Taiwan (TWSE)

↓ 2454 -5.51%

Large-cap · 4285 (local)

Why: MediaTek fell 5.5% as Taiwan’s semiconductor selloff extended for a second session — the global chip repricing hit smartphone IC designers hard, with TAIEX down 2.2% overall.

Pattern: Momentum breakdown continuation in the semiconductor complex. MediaTek is a high-beta proxy for the global chip cycle — the outsized move versus the index (-5.5% vs -2.2%) signals sector-specific de-risking, not just broad selling.

India (NSE)

↑ BAJFINANCE +2.70%

Mid-cap · 988.4 (local)

Why: Bajaj Finance rallied 2.7% as Indian financials caught a bid — domestic consumption and credit growth narrative remains intact, with Nifty 50 up 0.9% on broad risk-on sentiment.

Pattern: Domestic momentum continuation. India has been relatively insulated from the Asia-wide semiconductor selloff — Bajaj Finance is a domestic demand play, and the +2.7% move fits the broader Indian financials re-rating theme.

↓ HINDUNILVR -0.04%

Large-cap · 2159 (local)

Why: Hindustan Unilever was essentially flat at -0.04% — no catalyst. India’s FMCG sector is range-bound as investors weigh rural recovery optimism against margin pressure from input costs.

Pattern: Dead-flat session within a tightening consolidation range. No signal — HUL is a low-beta defensive that rarely participates in broad market rallies. Consistent with its role as a portfolio anchor, not a momentum name.

New Zealand (NZX)

↑ AIR +1.11%

Large-cap · 0.455 (local)

Why: Air New Zealand edged up 1.1% with no specific headline — mild positive sentiment in travel/leisure names as fuel prices remain contained and winter holiday bookings track ahead of plan.

Pattern: Low-conviction drift higher within a tight range. Air NZ has been a micro-cap recovery story — the +1.1% move is within normal daily noise and doesn’t signal a breakout or breakdown.

↓ MEL -2.50%

Mid-cap · 5.85 (local)

Why: Meridian Energy fell 2.5% with no clear catalyst — check broader NZ utilities tape. May reflect mild profit-taking after the sector’s defensive run during recent global equity volatility.

Pattern: Mean-reversion pullback in a defensive utility. When risk-on sentiment returns (as it did today via Samsung/KOSPI), utility names that benefited from the flight-to-safety trade tend to give back gains. Isolated, not thematic.

Reading the Session

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.

Read next: Asia Pacific Markets · What Is a P/E Ratio? · What Is a Dividend?