Daily Woody | Jul 28, 2026 — Seoul halts as CXMT tops Shanghai

Korea's news, read between the lines — edited daily for the world
Tuesday, July 28, 2026
Front Page
Seoul stops trading for 20 minutes as memory shares give way
At 10:13 a.m. Tuesday the Korea Exchange suspended trading in every listed stock for twenty minutes. The KOSPI had held more than 8% below Monday's close for a full minute, tripping the first of three circuit-breaker thresholds. The index stood at 6,213.51 at that moment, down 542.24 points; two minutes later it read 6,212.26. A sell-side sidecar had already halted programme orders at 9:06 a.m., with the junior KOSDAQ following eight minutes later.
Two stocks did most of the damage. Samsung Electronics fell as much as 11% intraday and SK Hynix as much as 12.9%. By 11:06 a.m. the KOSPI was at 6,126.89, down 9.31%, having touched 6,109.51 earlier. As of 10:15 a.m., retail investors had bought a net 1.87 trillion won while foreign and institutional investors sold 1.72 trillion and 148 billion won respectively.
The trigger came from China. Changxin Memory Technologies (CXMT), the country's largest DRAM maker, closed its Shanghai debut on Monday as the most valuable company listed on the mainland. Reports the same day said a Chinese firm had begun producing domestic deep-ultraviolet lithography tools. Wall Street had already marked the news down overnight: ASML lost 5.80%, Nvidia 4.99%.
Between the Lines

Do the arithmetic on the day and the concentration shows itself. Two companies fell 11% and 12.9%; the whole index fell 9.31%. An index tracks two of its members that closely only when those two are a large part of it. This is why Seoul reprices a global memory story before anyone else does, and why a Chinese listing in Shanghai stops the whole board in Seoul.

Set the week's numbers side by side. CXMT raised roughly 14 trillion won in Shanghai on Monday. Nvidia agreed the same day to put 1.48 trillion won into Naver. President Lee, speaking from Brasília on Monday local time, called the San Francisco AI Declaration a national statement of intent, its headline figure 950 billion dollars in chip cooperation and 5 gigawatts of planned data-centre capacity — roughly what five nuclear reactors generate around the clock. Every one of those numbers assumes memory keeps its price. Samsung and SK Hynix ship 12–13nm DRAM today; CXMT is at 16nm, about two process generations behind. The size of that gap was never Tuesday's question. Its rate of change was.

Nvidia to take about 4.5% of Naver
Naver disclosed on Monday that it will issue 7,241,564 new shares to Nvidia at 204,500 won each, raising 1.48 trillion won. Payment is due October 30 and the shares list on November 20. Once complete, Nvidia becomes Naver's third-largest shareholder behind the National Pension Service and BlackRock. Reported stakes vary slightly by outlet, between 4.5% and 4.55%.
The deal carries a condition. Separately from this money, Naver must secure at least 9 billion dollars of computing infrastructure; Brookfield has 12 weeks of exclusivity to arrange it. Naver will retire 4,901,094 treasury shares worth about 1.02 trillion won on August 3 to offset dilution. It is the company's first third-party allotment in 22 years.
Sources ↗ Munhwa Ilbo · Money Today · Etoday · Newspim
Former president Yoon convicted over campaign statements
The Seoul Central District Court on Monday handed former president Yoon Suk-yeol 18 months in prison, suspended for three years, for violating the Public Official Election Act. The court found he knowingly made false statements during the 2022 presidential campaign, including a denial that he and his wife had met the shaman Jeon Seong-bae together.
Under Korean law any fine above one million won nullifies an election win. The winner's party must also repay its state campaign subsidies. If the verdict survives appeal, the People Power Party returns 39.7 billion won to the National Election Commission. Yoon's lawyers appealed immediately, arguing the court misread both the facts and the law.
International
CXMT debuts as the mainland's most valuable listed company
Monday's listing in Shanghai is the event that stopped Seoul's market on Tuesday. It reads differently from where it happened.
Changxin Memory Technologies listed on Shanghai's STAR Market on Monday and closed with a market value of 3.28 trillion yuan, about 711 trillion won, which Financial News reports made it the most valuable company on the mainland. Turnover passed 100 billion yuan within an hour of the open.
The offering raised 66.6 billion yuan, roughly 14.5 trillion won, including the greenshoe. Money Today reports it as the second-largest IPO on Chinese exchanges since Agricultural Bank of China in 2010. About 9.43 million retail investors subscribed, at odds of 244 to one.
Separately, reports say Shanghai Yuliangsheng Technology will build five domestically designed 28nm ArF immersion DUV lithography systems this year and 20 next year, with CXMT, SMIC and Hua Hong among the first recipients. US sanctions bar Chinese firms from buying ASML's extreme-ultraviolet machines. That is why a domestic DUV line is worth watching.
🔄 Tracking: Middle East · ongoing
US and Iran hold fire; Hormuz talks advance and oil slides
Oil has been a fixed term in Korean price policy for four months. That term moved this week.
Thirteen days of exchanged strikes stopped over the weekend. Washington held off further attacks and President Trump's UN envoy said the administration was allowing room for talks. Tehran said it would suspend retaliation against regional neighbours.
Iranian foreign ministry spokesman Esmail Baghaei confirmed several rounds of technical talks with an Omani delegation in Tehran over the weekend and described progress. The Associated Press, citing an unnamed US official, reported a compromise under discussion in which Iran would manage transit through the strait while easing restrictions on shipping.
Brent settled near 85 dollars a barrel on Monday. Against the 100.69 close on July 23, after Houthi threats to Saudi shipping, that is roughly 15% off in four sessions; single-session declines were reported between 6.8% and 8.7% depending on the outlet. Iranian state television said the Revolutionary Guard turned back six vessels on Monday for using unapproved routes.
Between the Lines

The language on the table is about common principles and operating mechanisms for safe passage. Nobody is drafting a clause that ends Iranian control of the waterway; the text under negotiation has Iran managing transit and relaxing its own restrictions. The six vessels turned back on the same Monday show the arrangement working as written.

In Korea the first place this lands is the budget. Seoul introduced a wholesale fuel price ceiling on March 13 and has run it for four months on a 4.2 trillion won contingency reserve, with industry putting compensation for March through June already in the trillions. Falling crude lightens that bill. Yet on Monday President Lee said the ceiling and the fuel tax cut would both stay until the oil picture is unambiguously settled. Markets moved the news into prices within hours; the government has not moved it into policy. Today's economy page carries the other half of this clock.

Wildfires displace 300,000 across France and Spain
France has moved more people out of harm's way than at any point in peacetime since the Second World War.
Fires in the Gironde and Landes departments have driven more than 300,000 people from their homes across the two countries. The Bordeaux exhibition centre is serving as a main reception site. Le Porge, a commune of 3,500 west of the city, has been badly hit; Bordeaux's mayor said the city itself is not directly threatened.
President Macron ordered military mobilisation on Friday and chaired a crisis cabinet meeting on Monday. Some 42,000 hectares have burned in the Gironde alone. In Spain, two large fires near San Martín de Valdeiglesias west of Madrid have met along a nine-kilometre stretch. The Military Emergencies Unit has deployed 2,737 personnel and 21 aircraft, joined by crews from Greece, Italy and Portugal. At least one person has died.
Winds eased over the weekend, but temperatures in both fire zones are forecast to climb to abnormally high levels by midweek.
Sources ↗ CNN · CNBC · France 24
Domestic
🔄 Tracking: Comprehensive Special Counsel · ongoing
Special counsel questions ex-defence minister inside Seoul prison
An investigation that began with 90 days and stretched to 180 is showing how it intends to spend the last month.
Investigators from the second Comprehensive Special Counsel, led by Kwon Chang-young, entered the Seoul East Detention Centre at 9 a.m. Tuesday to question former defence minister Kim Yong-hyun. He faces the charge as a suspect: conspiracy to commit murder in furtherance of insurrection. Assistant special counsel Kim Chi-heon went into the prison himself.
At issue is a notebook kept by Noh Sang-won, former commander of the Defence Intelligence Command. Its roughly 70 pages list politicians, judges and journalists as targets for what it calls collection, and use the word kill. The special counsel alleges Kim conspired with Noh to seize and kill opponents while preparing the December 2024 martial law declaration.
An earlier special counsel under Cho Eun-suk opened the same charge against Noh and never brought it to trial. Noh refused to answer questions, and the National Forensic Service returned an inconclusive handwriting analysis, so the earlier court refused the notebook as evidence. Parliament extended the current mandate on July 21; it expires August 23.
Korea Context

Korea's special counsel is not a standing office. Parliament passes a bespoke statute for each investigation, fixing its scope, staffing and clock. The current body inherited unfinished cases from three earlier counsels covering the martial law attempt, the former first lady, and a marine's death in a flood rescue. Each extension requires either a new law or presidential approval, which is why the calendar itself becomes a story.

Between the Lines

This is not evidence-gathering. The notebook was seized in December 2024, the forensic analysis is finished, and a previous special counsel worked the same charge against the same people and let it go. What remains is a second attempt at a legal characterisation of a document everyone has already read. Article 90 of the criminal code requires more than an entry on a page: prosecutors must show preparatory acts. That is why the team ran site inspections at Yeonpyeong Island, a military bunker and a defector resettlement centre.

Whatever the verdict, the precedent outlasts it. How far may investigators build criminal liability on a document whose handwriting cannot be authenticated and whose author will not speak? Korea now convenes special counsels often enough that the answer becomes an operating standard for the next one. The mandate ends August 23, and the statute leaves no further extension.

Sources ↗ Ajunews · Nocut News · Lawtimes · Asia Today
Lee calls AI declaration a statement of intent, opens South America tour
On a state visit to Brazil, President Lee Jae-myung chaired a video meeting of senior secretaries on Monday local time and described the San Francisco AI Declaration as a national statement of intent to lead the artificial intelligence era, instructing aides to follow through. He last ran the weekly meeting from abroad during an Italy trip in June.
The declaration, issued at a July 24 summit attended by Korean conglomerate heads and US technology chief executives, was accompanied by an announced 950 billion dollars in semiconductor cooperation between firms of the two countries. Policy chief Kim Yong-beom said 5 gigawatts of AI data-centre capacity is planned for Korea, with Nvidia taking 2 gigawatts and Anthropic working with SK Telecom on 1 gigawatt.
Lee frames the Brazil, Chile and Argentina leg as widening Korea's diplomatic base toward the Global South. At eleven days it is the longest trip of his term.
Heat deaths reach eight as government raises alert level
The Korea Disease Control and Prevention Agency's emergency-room surveillance recorded one presumed heat death on July 22, another on July 23 and two more on July 26. That brings this year's presumed total to eight. Five days added another 302 heat illness cases.
Gyeonggi province accounts for 294 cumulative cases, ahead of North Gyeongsang with 159 and Seoul with 124. People in their sixties make up 18.4% of cases and those in their fifties 17.4%. The largest share by time of day, 198 cases or 14.2%, falls between 6 and 10 in the morning, overlapping the start of the outdoor working day.
Miryang and Yangsan in South Gyeongsang reached 39.3°C on July 26. The government has raised its heat crisis alert and activated the central disaster response headquarters.
Sources ↗ Kyunghyang Shinmun · Yonhap · MBC
Economy & Industry
Fuel price ceiling stays even as crude retreats
President Lee said on Monday that the wholesale fuel price ceiling and the fuel tax cut will both remain until oil market instability is clearly resolved. At a cabinet meeting on July 21 he had gone further, saying the programme needed strengthening even though the original plan called for easing or ending it by now.
The eighth ceiling, effective from midnight on July 25 for four weeks, holds petrol at 1,784 won a litre, diesel at 1,773 and kerosene at 1,380 — unchanged from the seventh. The government judged July's average Brent price of 82 dollars, below June's 84, gave no case for an increase.
The scheme has run since March 13. Seoul set aside a 4.2 trillion won contingency reserve to operate it, and Money Today reports refiners estimate compensation for March through June already runs into the trillions of won.
The takeaway — Cheaper crude eases the fiscal bill, but only while the ceiling stays where it is. Deciding when to cut the ceiling is the same decision as when to stop spending the reserve.
Korea Context

Seoul sets a maximum price refiners may charge distributors and compensates them for the difference out of a contingency reserve. It then monitors some 10,000 filling stations to make sure the cut reaches the pump. This is an unusual instrument for a market economy of Korea's size, adopted in March as Hormuz disruption fed into domestic inflation.

A crowded calendar arrives on a bruised market
Tuesday's halt was the eighth circuit breaker on the KOSPI this year and the third in July alone. The previous one came on July 13, after profit-taking followed SK Hynix's American depositary receipt listing. The index has not closed near these levels since April.
The week ahead offers little shelter. SK Hynix reports second-quarter earnings, several of the largest US technology firms follow, and the Federal Open Market Committee meets. From July 29, holders may convert between SK Hynix ADRs and its ordinary Korean shares in both directions.
Kiwoom Securities analyst Han Ji-young argued the sell-off outruns the evidence. Earnings have not yet deteriorated, she noted, and valuation and momentum indicators read as oversold. That is a forecast, and this week's reports will test it.
The takeaway — A market this thin on conviction meets three days of hard data. Whichever way the numbers land, the reaction will be outsized.
Sources ↗ Newsworks · Newspim · Hankyung · Edaily
Briefs
Herald Business  The KOSPI volatility index has turned higher again. It reached 97.99 on June 29, its highest reading since the global financial crisis.
Etoday  Typhoon Dolphin, the season's thirteenth, formed east of Guam on Monday. Forecasters expect sustained winds near 47 metres per second by late this week; outlets differ on the intensity grade. Its projected track keeps it well away from the Korean Peninsula, though the storm is young and the path may shift.
Policy Briefing  Construction has begun on the Korea New Light Source, a fourth-generation synchrotron radiation accelerator.
Hankook Ilbo  Former first lady Kim Keon-hee was questioned for about eight hours on July 22 over alleged favouritism in the presidential residence relocation and declined to answer every question. Financial News reports the special counsel will decide on charges without calling her again.
Policy Briefing  Discounted weekend and holiday expressway tolls for families with multiple children take effect Tuesday.
Weather
Heat and tropical nights continue across most of the country on Tuesday. Central regions, North Gyeongsang and Jeju see considerable cloud; the rest of the south stays mostly clear. Showers are possible through 6 p.m. in central and southern Gangwon, northern Chungbuk and central and northern Gyeongbuk.
Tue 28Wed 29Thu 30Fri 31
Low22.6–28.8°C22–26°C21–26°C21–27°C
High32–38°C32–38°C31–38°C31–37°C
SkyCloudy, showersCloud in centralCloud in centralCloud in central
Expected shower totals, July 28
RegionRainfall
Central & southern Gangwon, inland and mountains5–30mm
Central & southern Gangwon, east coast5–20mm
Northern Chungbuk5–20mm
Central & northern Gyeongbuk5–40mm
Advisory — Expect gusts, thunder and lightning where showers develop. Four consecutive days will run well above the seasonal norm of 28.1–32.5°C. Heat illness peaks between 6 and 10 in the morning, so early outdoor work is not the safe window it appears to be.
Editorial

Three things happened on Monday. Naver agreed to sell Nvidia 1.48 trillion won of new stock. Changxin Memory raised 14 trillion won in Shanghai and closed the day as the most valuable company on the Chinese mainland. And the president, speaking from Brasília on Monday local time, described the San Francisco AI Declaration as a statement of national intent.

On Tuesday at 10:13 a.m., the Korea Exchange closed the market for twenty minutes. Eighth halt of the year, third this month. The KOSPI stood at 8,930 on June 25; it touched 6,109 on Tuesday. Roughly a third of the index has gone in a little over a month.

Oil showed the same lag from the other direction. Brent fell about 15% in four sessions on news from the Hormuz talks, and the government said the price ceiling stays. Markets convert news into prices in hours. Governments wait for certainty.

Which instinct is right will not be clear for months. What is clear is that a declaration can be written in a day and a two-generation lead cannot. Holding that lead is work for a process roadmap.

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