Woofun AI reports that a dual shock of geopolitical escalation and semiconductor valuation cracks triggered a severe market correction, with SK Hynix plummeting 15.4% and the U.S. military launching strikes against Iran in the Middle East.

The sell-off extended broadly across the storage chip sector ahead of the U.S. market open. Micron Technology shares declined by approximately 6%, while Seagate Technology fell about 4%. Western Digital also dropped around 6%, and SanDisk experienced a decline of roughly 7%. This widespread weakness in the memory and storage hardware space signaled a retreat from recent AI-driven optimism, as investors reassessed the sustainability of high valuations in the face of slowing demand and capacity expansion concerns.

In South Korea, the market reaction was even more severe. SK Hynix recorded its largest single-day drop in history, falling 15.4%, while Samsung Electronics shares tumbled nearly 11%. The combined weight of these two tech giants dragged the Kospi index down sharply, triggering the seventh circuit breaker activation for the year. The extreme volatility highlighted the fragility of the Korean market’s reliance on semiconductor performance, as profit-taking accelerated following the recent surge in SK Hynix’s American Depositary Receipt (ADR) listing.

The root causes of the crash were multifaceted. Analysts pointed to a performance forecast that landed 8% below market expectations, shattering the narrative of uninterrupted growth.

Additionally, the $26.5 billion ADR listing had previously driven a 13% surge, but the 'good news' was now fully priced in, leading to a wave of arbitrage closing and profit-taking. Deeper structural issues emerged, including insufficient pricing elasticity for High Bandwidth Memory (HBM) and a widening supply-demand gap due to slowing end-market demand, which exposed real cracks in the valuation logic for storage chips.

Geopolitical tensions simultaneously escalated in the Middle East. The U.S. Central Command announced that at 5 PM Eastern Time on July 12, the U.S. military began a new round of strikes against Iran. The stated objective was to 'continue to weaken its ability to attack vessels passing freely through the Strait of Hormuz.' In the early hours of July 13, explosions were reported in multiple Iranian areas, including Abbas Port and Sirik, raising fears of a broader conflict and potential disruptions to global energy supplies.

Woofun AI data shows that global equity indices reflected the growing uncertainty. In Europe, the Stoxx 50 index opened down 0.5%, the German DAX fell 0.5%, the UK FTSE 100 rose slightly by 0.1%, and the French CAC 40 declined 0.3%. In Asia, the Nikkei 225 index closed down 1.9% at 67242.73 points, while the Tokyo Stock Exchange index fell 0.7% to 4007.49 points. The Korean KOSPI index suffered the steepest loss, closing down 8.9% at 6806.93 points. Nasdaq 100 index futures also fell 1.3%, indicating continued pressure on U.S. tech stocks.

Commodity and currency markets reacted sharply to the geopolitical and economic shifts. Brent crude oil surged over 3% to $78.50 per barrel, while WTI crude futures jumped 4.2% to $74.40 per barrel, marking one of the largest single-day increases in recent times. In contrast, gold fell 1.3% to $4065 per ounce, and silver dropped nearly 3% to $58.20 per ounce. Bitcoin also weakened, dropping over 2% to $62,700, dragging the broader cryptocurrency market down. The dollar index strengthened by 0.2%, reflecting a flight to safety and rising interest rate expectations.

Bond markets faced significant pressure as inflation fears resurfaced. The two-year Treasury yield, sensitive to policy rates, rose 2 basis points to 4.23%, reaching its highest level since February 2025. The ten-year Treasury yield also increased by 3 basis points to 4.59%. Australian and Japanese government bond yields rose simultaneously. Bloomberg strategist Mark Cranfield noted that if oil prices remain strong, U.S. Treasuries will face further downward pressure, with the linkage effect of oil prices, bonds, and the dollar likely to continue in the short term.

Amid the turmoil, South Korean President Lee Jae-myung announced the establishment of a 'Future Response Fund' to channel excess tax revenue into strategic investments. Government support will focus on three key areas: chips, AI data centers, and physical AI. Korea Investment & Securities predicted that SK Hynix’s second-quarter operating profit may be 8% lower than market expectations, citing the company’s high revenue share from HBM, which limits average price increases. Shoji Hirakawa, Chief Global Strategist at Tokai Tokyo Intelligence Lab, warned that if U.S.-Iran attacks escalate, it could become a negative catalyst for the market, though semiconductor stocks may remain relatively resilient due to strong profitability.

Looking ahead, the market faces critical tests. Goldman Sachs and JPMorgan are set to announce earnings on Tuesday, providing the first major test of whether corporate profits can support the AI-driven rally. U.S. CPI data will also be released, with investors watching closely to see if rising energy prices further boost inflation. Federal Reserve Chairman Kevin Warsh will attend his first congressional hearing, offering insights into the interest rate outlook.

Additionally, China’s second-quarter economic growth data and the Bank of Korea’s interest rate decision will provide further clues on global economic momentum.