Korea Stock Market News
KOSPI & KOSDAQ moves, foreign/institutional flows, and company catalysts — translated for global investors.
PiONEX Plunges 18% as Search Volume Surges, Drawing Market Attention
PiONEX plunged 18.73% in a single day, ranking sixth among stocks with the steepest declines, while Naver search volume for the stock surged sharply. Organic Tea Cosmetic, in the same sector, also fell in tandem, dropping 13.3%, though no disclosed reason for the decline at the individual stock level has been confirmed yet.
Jul 30, 2026
KNR System Plunges Nearly 19% as Medical Device Stocks Slide Together, Search Volume Spikes
KNR System plunged 19.23%, ranking 14th among the day's biggest decliners. Fellow sector peer L&K Bio also plunged 29.9%, highlighting broad weakness across the medical and precision equipment industry sector, while Naver search volume for the stock surged.
Jul 30, 2026
Chemtross: Warrant Exercise Price Adjustment Reopens the Dilution Question
Chemtross's July 30 disclosure is less about new capital inflow and more about a change in the terms of its existing bond-with-warrants. Investors should weigh the potential share-count burden before factoring in electrolyte additive growth.
Jul 30, 2026
Microsoft's 8% Sharp Gain (Surge), Meta's 6% Sharp Drop (Plunge)—Why Samsung Electronics and SK Hynix Are Still Smiling
Microsoft proved AI spending is paying off, posting 43% Azure growth and 30 million paid Copilot accounts. Meta's cost burden tells a different story—but it's still a positive signal for HBM demand.
Jul 30, 2026
KOSPI in a Wait-and-See Mode: Samsung Electronics Decides the Direction of Supply-Demand
The KOSPI swung between gains and losses on the 30th, driving up volatility. Supply-demand (order flow) in the twin-top stocks Samsung Electronics and SK Hynix is testing the short-term ceiling of the index's valuation multiple.
Jul 30, 2026
Gigavis Supply Contract Disclosure: The Fact That It Was Filed Is Already the Answer
Even without a disclosed contract value, the fact that this filing cleared KOSDAQ's ad hoc disclosure threshold at all speaks to the direction of demand for semiconductor substrate inspection equipment. That's why the question to ask isn't the amount, but who bought it and why.
Jul 30, 2026
Microsoft Jumps 8%, Meta Plunges 6% — Despite Diverging Earnings, Samsung Electronics and SK Hynix Come Out Winning
Microsoft's stock jumped 8% after its earnings report, while Meta's shares plunged 6%. The two companies moved in opposite directions, but both signaled they will keep ramping up AI server investment — and for memory suppliers Samsung Electronics and SK Hynix, that shared signal of expanding demand matters more than either company's earnings outcome.
Jul 30, 2026
KOSPI Plunges for Second Straight Day: Behind the PPP's 'Gambling Den' Attacks Lies the Real Cause
The People Power Party (PPP) has blamed the government for the KOSPI's sharp drop over two consecutive days, demanding a parliamentary inquiry and a special counsel investigation. But as the political feud intensifies, what investors actually need to watch are the direction of foreign investor supply-demand (order flow), the KRW/USD exchange rate level, and the timing of the next Monetary Policy Board meeting.
Jul 30, 2026
The Technology Plunges 82%, Posts the Day's Steepest Sharp Drop (Plunge) Rate
The Technology plunged 82.46%, recording the steepest sharp drop (plunge) rate among all stocks (tickers) today. The decline far exceeds the standard price-limit band, and Naver search volume for the stock surged as well, but no disclosed reason for the drop from the company itself has been confirmed. In the same distribution sector, Hyungji Global rose 13.6%, making it hard to characterize this as sector-wide weakness.
Jul 30, 2026
Lumens Surges 27%, Ranks 9th in KOSDAQ Gainers as Search Volume Spikes
Lumens surged 27.73%, ranking 9th among KOSPI/KOSDAQ gainers for the day, while search volume on Naver also jumped sharply. However, fellow electrical/electronics-sector stocks LB Semicon and ICH both declined, making it premature to call this a sector-wide rally — moves among related stocks (tickers) were mixed.
Jul 30, 2026
HJ Shipbuilding & Construction's Major Management Disclosure: A Filing With the Numbers Missing
HJ Shipbuilding & Construction disclosed a matter of major management significance related to investment decisions on July 30, 2026. With the contract amount and capital increase size still unconfirmed, investors should focus first on the order backlog, construction start timing, and whether cost increases can be passed through, rather than on short-term catalysts.
Jul 30, 2026
A Single Share of SK Hynix Triggered an ₩80 Billion Liquidation, Exposing a Weak Spot in Crypto Derivatives Markets
SK Hynix had no fundamental issue of its own, but a distorted opening price on Nextrade's pre-market spread into a $60 million liquidation on Hyperliquid.
Jul 30, 2026
Samsung Electronics (005930) Posts 171 Trillion Won in Q2 Revenue as AI Memory Profitability Shifts Gears
Samsung Electronics' (005930) preliminary Q2 revenue rose 129.3% year-over-year, while operating profit surged to 89.4 trillion won. HBM and DDR5 pricing, along with the pace of foundry recovery, mark the next inflection point.
Jul 30, 2026
PeopleBio Trading Halt: Disclosure Title Alone Doesn't Reveal Whether It's a Share Consolidation or a Stock Split
PeopleBio shares were halted from trading due to an electronic-registration change tied to a share consolidation or stock split. The two actions move share prices in opposite directions, but this disclosure alone doesn't confirm which one applies or at what ratio.
Jul 30, 2026
The Paradox of the Fed's Hawkish Hold: Will the Bank of Korea Rush to Raise Rates?
The Bank of Korea is reassessing the pace of rate hikes following the Federal Reserve's hawkish decision to hold its benchmark interest rate steady. With the dot plot signaling a prolonged period of high rates and mounting upward pressure on the KRW/USD exchange rate, some observers say the case for accelerating the pace of tightening could gain traction at the next Monetary Policy Board meeting.
Jul 30, 2026
Meta Shares Plunge After Earnings as Three Fed Dissents Rattle Long-Term Rates
The Federal Reserve held its benchmark interest rate steady, but three committee members dissented, breaking an unusually unanimous streak — and long-term government bond yields surged in the aftermath. On the same day, Meta's shares plunged even after its earnings report, as heavy AI investment spending drew attention to thinning cash flow.
Jul 30, 2026
Microsoft's Quarterly Revenue Hits ₩130 Trillion, Up 18% — Semiconductor Orders Are the Real Story
Microsoft posted quarterly revenue of 130 trillion won, up 18% year-over-year and above market expectations, sending its stock higher. Expanding cloud and AI revenue drove the earnings beat, a trend that is flowing through to increased semiconductor supply chain orders — including Nvidia GPUs and SK Hynix HBM.
Jul 30, 2026
Davo Link Completes Third-Party Share Allotment... One Thing to Watch Beyond Dilution
Davo Link's securities issuance results disclosure confirms the completion of a third-party allotment paid-in capital increase. What matters more than the issuance figures is whether the funds translate into Wi-Fi equipment shipments and a recovery in profitability.
Jul 30, 2026
Single-Stock Leveraged ETFs Face 20% Investor Cap as Order Flow Rattles Samsung Electronics, SK Hynix
As single-stock leveraged ETFs overheat, financial regulators are considering capping individual investors' exposure at 20% of their total investment assets. With 731.5 billion won flowing into 14 such products in a single day, order flow has become a regulatory variable.
Jul 30, 2026
Global Oil Prices Surge 7%: Brent's Move Past $90 Shakes Up the Refiner Landscape
Global oil prices jumped as much as 7% intraday after renewed U.S.-Iran military clashes, pushing Brent crude past $90 a barrel. Costs and margins are diverging across refiners, chemical makers, and airlines.
Jul 30, 2026
AgentAI's Management Rights Contract: Governance Shifted Before the Business Did
AgentAI disclosed a management rights change contract on July 29, 2026. At the core is a reshuffling of businesses across its 7 consolidated subsidiaries and 9 affiliates as of Q1.
Jul 29, 2026
Single-Stock Leveraged ETFs: Overheated Demand Hits a Proposed 20% Cap
Regulation of single-stock leveraged ETFs has expanded beyond the 30 million won cash minimum deposit requirement to include a proposed 20% cap on an individual investor's total investment. It's a direct variable for brokerage trading value and closing-price volatility.
Jul 29, 2026
AgentAI Raises ₩6.5 Billion via Paid-in Capital Increase — Operating Funds Secured, but Dilution Looms
AgentAI will raise approximately ₩6.5 billion through a third-party allotment paid-in capital increase to Prime Value Investment Partnership. Securing cash is a positive, but the key questions are shareholder dilution and how the funds will actually be used.
Jul 29, 2026
MBK, Meritz Get Repaid Before Homeplus Bondholders; FSS Governor Calls for Legislative Fix
On July 29, FSS Governor Lee Chan-jin told the National Assembly that the structure allowing funds injected by MBK Partners and Meritz Financial into Homeplus's rehabilitation process to be repaid ahead of retail investors holding electronic short-term bonds is inappropriate, and called for legislative correction. The issue revives governance-risk concerns tied to the 2015 acquisition, which was valued at roughly 7 trillion won.
Jul 29, 2026