Asian equity markets experienced a sharp two-day swing this week, as geopolitical fears and oil-price volatility collided with sustained AI optimism. On Tuesday, the Nikkei 225 tumbled 1.9%, leading a region-wide retreat after doubts over a Middle East ceasefire sapped risk appetite. South Korea’s KOSPI fell as much as 3.3% before paring losses, while MSCI’s Asia-Pacific ex-Japan index lost 0.6%. The sell-off was driven by renewed tensions between Israel and Hezbollah and a collapse in indirect US-Iran negotiations, which pushed Brent crude to around $94.45 a barrel. Energy costs became a key channel for market anxiety, with analysts warning that prolonged disruption in the Strait of Hormuz could send oil above $130.
Just 24 hours later, the narrative flipped. Japan’s Nikkei 225 surged 2.14% to a fresh record high, while the broader Topix added 1.52%, lifted by Wall Street’s latest record run and unrelenting enthusiasm for AI-linked semiconductor and hardware plays. The rally came despite crude prices climbing further — West Texas Intermediate rose to $94.82 and Brent to $97.01 — and after US Secretary of State Marco Rubio told Congress that Iran had mined large segments of the Strait of Hormuz and fired on commercial vessels. Hong Kong’s Hang Seng, by contrast, slipped 0.98% on China demand concerns, and Australian stocks barely moved after tepid GDP growth data.
The juxtaposition underscores a market torn between geopolitical risk and the AI investment cycle. AI-related capital flows remain robust, with Anthropic’s confidential IPO filing and Alphabet’s plan to raise $80 billion for AI infrastructure — including an investment from Berkshire Hathaway — acting as powerful tailwinds. Yet each flare-up in the Middle East threatens to complicate inflation and central-bank policy expectations. South Korea’s inflation accelerated to a two-year high, cementing bets on a Bank of Korea rate hike, while in the US, a stronger ISM manufacturing print suggested the economy retains momentum despite higher energy costs. Traders described the two-day move as profit-taking after a sharp rally, not a re-rating of the AI trade, but the volatility in oil markets keeps everyone on edge.
