Why it matters. South Korea is home to the world's largest memory-chip makers, Samsung and SK Hynix, so a record rally driven by Nvidia signals how central Korean firms are to the global AI hardware supply chain.
Background. The KOSPI is South Korea's main stock index, comparable to the S&P 500. Korean media use slang like '8,000-pi' or '9,000-pi' (from 'index point') to mark psychological thresholds. A 'sidecar' is an automatic five-minute freeze on program buy orders to curb runaway moves, and Korean rules cap any single stock's daily move at 30 percent — the 'limit up' that LG Electronics hit.
What to watch next. Watch whether Huang's actual meetings in Korea this week produce concrete deals, and whether regulators flag the leveraged-ETF day-trading frenzy as the index nears 9,000.
South Korea’s stock market sets a record on Nvidia chief’s visit
South Korea’s benchmark KOSPI index closed at an all-time high of 8,788.38 on Monday, June 1, jumping 3.68 percent to clear the 8,700 mark for the first time, as anticipation built around Nvidia CEO Jensen Huang’s planned meetings with the country’s top business leaders. The surge was led by chipmaker Samsung Electronics and other tech names tied to Huang’s visit, according to data from the Korea Exchange.
The index briefly spiked as high as 8,874.16 during the session before settling. The milestone comes just four trading days after the KOSPI first closed above 8,000, putting the 9,000 level — once a distant target — suddenly within reach. The market triggered its 11th “buy sidecar” of the year, a circuit-breaker-style mechanism that freezes program buy orders for five minutes when KOSPI 200 futures rise more than 5 percent for at least a minute.
What’s driving the surge
The rally is being propelled by Huang, who is attending Computex, Asia’s largest IT trade show, held in Taiwan, where he is expected to outline Nvidia’s artificial-intelligence infrastructure strategy. News that he plans to meet executives from Samsung, SK and LG — and will travel to South Korea this week to meet LG Group Chairman Koo Kwang-mo — sent shares of those companies soaring as investors priced in expected business with the world’s dominant AI chipmaker.
Samsung Electronics climbed 10.09 percent on the day and, excluding preferred shares, became the first company in the history of Korea’s main bourse to surpass a market capitalization of 2,000 trillion won (roughly $1.3 trillion). SK Hynix, the other major memory-chip maker, rose 1.29 percent, and automaker Hyundai Motor gained 3.73 percent.
LG-affiliated stocks were the standout performers. LG Electronics rocketed 29.86 percent, hitting its daily price ceiling — the maximum 30 percent single-day move Korean rules permit — on the news of the Koo meeting. LG Corp and LG Innotek also jumped. Companies merely rumored to be on Huang’s meeting list benefited too: portal operator Naver rose 16.03 percent and conglomerate Doosan added 11.71 percent.
Signs of overheating
The relentless climb has prompted warnings about short-term froth. As the daily newspaper Hankyoreh emphasized, the most striking sign is in leveraged exchange-traded funds (ETFs) tracking single stocks such as Samsung and SK Hynix. Some of these products saw daily turnover — a measure of how often holdings change hands — reach as high as 2,000 percent, pointing to a wave of extreme, rapid-fire day-trading.
The trading data underneath the rally also reveals a divide. Institutional investors net bought about 2 trillion won in shares, driving the index higher. Foreign investors, however, net sold roughly 1.8 trillion won, extending a selling streak to 17 consecutive trading days, while individual investors flipped to net sellers — booking profits with about 100 billion won in sales during the session.
Not every market rose in lockstep. The tech-heavy KOSDAQ index moved in the opposite direction, opening lower and widening losses to around 2 percent. The Korean won opened slightly weaker, at 1,508.8 per U.S. dollar, up 0.9 won from the previous close.
The advance has been swift: the KOSPI set a record close of 8,476.15 on May 29 and has since added nearly 400 points over two sessions. Earlier coverage from Hankyoreh framed the day as much around the rally’s mechanics — the sidecar, the foreign-selling streak — as around the headline-grabbing milestones, underscoring how concentrated the gains are in a handful of AI-linked names.
