South Korea's benchmark KOSPI index surged to a new all-time high Tuesday, closing at 6,388.47 points amid a powerful rally in semiconductor stocks that overcame lingering concerns over the U.S.-Iran conflict and global oil price volatility.
The index jumped 169.38 points, or 2.72 percent, from the previous session, surpassing the prior closing record of 6,307.27 set on Feb. 26 just before the escalation of hostilities in the Middle East. It also broke the previous intraday high of 6,347.41, with market capitalization reaching a record 5,236 trillion won ($3.57 trillion).
Gains were led by heavyweight technology names, particularly memory chip giants. SK Hynix soared more than 5 percent to top 1.2 million won per share for the first time, hitting the symbolic "1.2 million nix" milestone on strong expectations for first-quarter earnings driven by artificial intelligence demand. Samsung Electronics rose solidly, contributing heavily to the index's advance as foreign investors poured into the sector.
The rally unfolded despite ongoing uncertainty surrounding U.S.-Iran ceasefire talks. Markets had earlier tumbled on fears of prolonged conflict and rising energy costs, but sentiment shifted as investors focused on corporate fundamentals rather than geopolitical headlines. Analysts noted that semiconductor export figures for early April hit record levels, with shipments up sharply year-on-year, reinforcing confidence in Korea's flagship industry.
Foreign investors turned net buyers, snapping up an estimated 1.33 trillion won in shares, while institutions added another 738 billion won. Domestic retail investors, often called "ants" in local parlance, sold heavily — about 1.92 trillion won — taking profits after recent gains. The divergence highlighted institutional and overseas confidence in long-term growth prospects for Korean tech.
Trading volume remained robust, reflecting broad participation. Fifty-four companies on the main board hit fresh 52-week or all-time highs, underscoring the breadth of the advance beyond just a handful of blue chips. Secondary battery stocks also contributed, with names like Samsung SDI and LG Energy Solution gaining on positive news from the electric vehicle supply chain, including reports of new contracts with luxury automakers.
The KOSDAQ composite rose a more modest 0.36 percent to close at 1,179.03, as gains in tech and bio sectors were tempered by profit-taking elsewhere.
Market watchers attributed the breakthrough to several converging factors. Strong global demand for high-bandwidth memory chips used in AI servers has fueled a boom in Korean semiconductor production. April semiconductor exports through the first 20 days reached record territory, up nearly 183 percent from a year earlier in some categories. This performance comes as major clients in the United States and elsewhere ramp up capital expenditure on data centers.
Optimism around SK Hynix's upcoming earnings, scheduled for later this week, added fuel. The company is expected to report robust profits on the back of HBM3E and other advanced products. Samsung Electronics is also positioned to benefit from similar tailwinds.
Broader economic signals supported the mood. South Korea's overall exports have shown resilience, with April figures on track for significant growth. Government policies aimed at capital market advancement, including efforts to improve corporate governance and shareholder returns, have also encouraged investor sentiment.
Yet risks remain. The Middle East situation continues to influence oil prices, which could feed into inflation and corporate costs if tensions reignite. Some analysts warned that the rapid advance leaves the market vulnerable to short-term pullbacks if profit-taking accelerates or if disappointing earnings emerge.
Despite those caveats, several foreign investment banks have raised their KOSPI targets. Goldman Sachs notably floated a long-term projection toward 8,000 points, citing sustained AI-driven demand and Korea's competitive edge in key technologies.
The milestone arrives at a pivotal time for the local economy. South Korea has navigated global challenges ranging from supply chain disruptions to interest rate fluctuations, with the semiconductor sector acting as a key buffer. The industry's contribution to exports and employment underscores its strategic importance.
Trading floors in Seoul buzzed with activity Tuesday, with screens displaying the new record prominently. Retail investors monitoring from home or offices expressed a mix of excitement and caution, with some debating whether to lock in gains or ride the momentum.
For the broader market, the record high signals a return of risk appetite after weeks of volatility tied to international events. The index had dipped below 6,000 points at times in March amid the initial shock from the conflict but has steadily recovered as investors reassessed fundamentals.
Sector rotation played a role as well. While semiconductors dominated, selective strength appeared in automobiles, machinery and some consumer stocks. Defensive areas like utilities and telecommunications saw more muted moves.
Looking ahead, market participants will watch closely for SK Hynix results and any fresh developments from U.S.-Iran diplomatic channels. Earnings season overall is expected to provide further direction, with many companies guiding higher on export strength.
The won strengthened modestly against the dollar, closing at around 1,468.5, reflecting improved sentiment toward Korean assets. Bond yields showed mixed movements as investors balanced growth optimism with inflation concerns.
This latest peak adds to a remarkable run for the KOSPI, which has more than doubled in value over the past several years amid the global tech supercycle. From levels below 3,000 points during the early pandemic era, the index has benefited from Korea's positioning as a critical supplier in semiconductors, batteries and other future-oriented industries.
Analysts cautioned that sustaining the rally will require continued earnings delivery and stable geopolitical conditions. Valuation metrics remain attractive by historical standards, with the forward price-to-earnings ratio sitting near multi-year lows even after the recent surge.
For ordinary Koreans with retirement accounts or stock investments, the record carries personal significance. Pension funds and collective investment schemes have seen improved returns, though volatility remains a constant reminder of market risks.
As trading wrapped up Tuesday, the atmosphere in dealing rooms combined celebration with forward-looking focus. Brokers fielded calls from clients eager to understand whether this breakthrough marks the start of a new leg higher or a temporary peak.
The KOSPI's journey to 6,388.47 reflects the resilience of South Korean enterprise in the face of external shocks. Driven by innovation in chips and batteries, supported by global demand and backed by returning foreign capital, the market has once again demonstrated its capacity to climb to new heights.
Whether the index can push toward 6,500 or higher in the coming sessions will depend on upcoming data and news flow. For now, investors are savoring a moment of triumph amid an otherwise uncertain global landscape.
Originally published on ibtimes.co.kr
