July 8 became a "black day" for Asian stock markets. The combined capitalization of the Japanese and South Korean markets shrank by approximately $363 billion. This is a powerful blow to regional indices, once again demonstrating the fragility of overheated technology sectors.
Japan's Nikkei index closed the session down 2.11%, falling to 66,819.05 points. The broader Topix index lost 1.4%, settling at 4,006.43 points. From the Japanese market alone, about 19.4 trillion yen (equivalent to roughly $120 billion) "evaporated."
However, the real crash occurred in South Korea. The KOSPI index plunged 5.35%, reaching 7,246.80 points — its lowest level since May 20. This drop "consumed" about 366 trillion won (approximately $243 billion) in market value. Such a sharp move forced the exchange to resort to a temporary trading halt once again.
Chips Under Fire: Who Suffered the Most
The main blow was taken by semiconductor manufacturers. Samsung Electronics shares crashed 6.25% to 277,500 won — a more than one-month low. SK Hynix shares lost 5.68%, barely holding above the 2 million won mark. This wave of selling was already the second in two days: the day before, on July 7, a drop in Samsung triggered the activation of a historic trading halt mechanism.
The key catalyst for the sell-off was geopolitics. US strikes on Iran and the revocation of exemptions from oil sanctions pushed oil prices up by about 6%, increasing volatility and triggering a risk-off move across the region. An additional backdrop was the overnight decline in US technology stocks and the Philadelphia Semiconductor Index — investors continued to reduce positions in the overheated AI sector, which had been driving Asian markets higher for the past year.
Is There Light at the End of the Tunnel?
Despite the massive crash, signs of resilience emerged within the session. Midday, markets showed a V-shaped reversal amid buying of beaten-down AI equipment stocks, which could indicate exhaustion of the short-term selling wave. Notably, some issuers held firm: SoftBank fell only 0.14%, and Japan's Kioxia lost a moderate 0.73%.
The key benchmark for the region now will be the US listing of SK Hynix, scheduled for Friday. Investors view it as an indicator of a potential rebound for semiconductor stocks in the Asia-Pacific region.
My analysis: The current situation is a classic example of a correction in an overheated market at the intersection of macroeconomic and geopolitical risks. Losses of $363 billion in a single day underscore how vulnerable the technology sectors remain, despite the long-term bullish trend. Further dynamics will depend on chipmaker earnings and the situation around Iran. If the SK Hynix listing in the US is successful, it could signal a short-term rebound, but fundamentally, markets remain under pressure.