Global markets experienced a sharp downturn today, with significant losses observed across major indices. In China, the three primary stock indices continued their decline after a brief midday recovery failed to reverse the overall downward trend. By the close of trading, the Shanghai Composite Index had fallen by 0.8%, the Shenzhen Component Index dropped 1.81%, and the ChiNext Index saw a more substantial decrease of 2.7%.
Market breadth was notably negative, with only 1,011 stocks advancing compared to 4,378 declining. However, 59 stocks managed to hit their daily upward price limit. The railway and rail transit sector demonstrated strength against the market trend. Companies including Jinying Heavy Industry, China Railway Industrial, and Jinxi Axle surged to their daily limit. This movement followed reports that China has commenced construction of a high-speed railway beneath the Yangtze River, a major project included in the national "15th Five-Year Plan" that will connect three major urban clusters.
The two-wheeled vehicle segment also saw active trading, with Hongchang Technology, Zhenghe Industry, and Qianjiang Motorcycle climbing by the daily limit. This activity was spurred by a historic achievement at the recent World Superbike Championship in Portugal, where Chinese motorcycle manufacturer Zhangxue Motorcycle secured victories in both rounds of the WorldSSP category, marking a significant breakthrough for a Chinese brand in the international racing series. Hongchang Technology, an investor in Zhangxue Motorcycle through its stake in Jinhua Zhechuang Jinyi Intelligent Control Venture Capital Partnership, benefited from this success.
Stocks based in Fujian province showed repeated activity, with Pingtan Development, Mindong Electric Power, and Shuhua Sports among those rising by the daily limit. The banking sector was another area of relative strength. Meanwhile, liquor stocks were active following an announcement from Kweichow Moutai that it will adjust prices upward for its flagship Feitian 53-degree 500ml product starting March 31, 2026.
On the downside, computing hardware stocks faced corrections, with companies like Dekor and Sihui Fushi falling more than 10%.
The bearish sentiment extended internationally. South Korea's stock market officially entered bear market territory, with the KOSPI index closing down 4.26% on Tuesday. The index has now fallen nearly 20% from its peak in late February, meeting the technical definition of a bear market. The nation's two largest companies by market capitalization, Samsung Electronics and SK Hynix, both fell over 5%, contributing significantly to the index's decline.
This sharp reversal highlights how quickly sentiment can shift in markets heavily driven by AI investment trends. Previously one of the world's strongest performers, the South Korean market has become one of the hardest hit in March. The escalation of conflict in the Middle East, which has driven up oil prices and reignited inflation fears, has led investors to question the sustainability of the AI boom.
Analysts noted that market attention is now almost entirely focused on the Middle East situation. As long as there are no clear signs of de-escalation, equity markets, including large-cap tech stocks within the KOSPI, are expected to remain under pressure. The recent sell-off has brought the KOSPI close to the 5,000-point level, a milestone previously championed by the administration.
Beyond geopolitical concerns, investor unease was amplified by a new technology announcement from Google. The technology is reported to significantly reduce the memory capacity required for training large language models. This development raises the possibility of reduced demand for high-end chips from cloud computing giants, potentially weakening the pricing power of Korean chip manufacturers. This concern has contributed to consecutive days of losses for Samsung and SK Hynix.
Analysts also pointed to worries about how progress in Google's TurboQuant technology might impact demand for memory chips, which are a core product of South Korea's semiconductor industry. The current market environment is forcing participants to navigate significant uncertainty and volatility.
Trading in South Korean stocks has been extremely volatile this year. The market's circuit-breaker mechanism, which halts trading if the index falls 8% in a single day, has been triggered only eight times in history, with two of those occurrences happening this month. This level of volatility is comparable to the period of market stress seen during the 2020 pandemic.
As of Monday, the South Korean stock market had lost approximately $739 billion in value this month. On Tuesday, foreign investors were net sellers of KOSPI stocks to the tune of 3.8 trillion won, while retail and local institutional investors were net buyers. Despite the recent downturn, the KOSPI index remains up approximately 20% for the year to date.
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