Asian stocks fall on US-Iran impasse, AI setbacks

On Wednesday, most major equity markets across Asia closed in negative territory, as investors reacted to two interconnected sources of market uncertainty: a stalled diplomatic breakthrough between the United States and Iran that threatens regional peace, and fresh disruptions that have cooled the red-hot global artificial intelligence boom.

Tensions between Washington and Tehran have reached a new impasse in recent days, with both sides refusing to budge on negotiating positions and issuing repeated threats to end their current ceasefire. On Tuesday, Iran’s top negotiator stated that the US must accept Tehran’s latest peace proposal, or talks will collapse entirely. This comment came hours after former US President Donald Trump warned that the existing truce in the Middle East was on the verge of breaking down. While neither side has signaled a willingness to return to full-scale open conflict, the deadlock has spooked global investors already jittery about the impact of regional tension on energy supplies.

All eyes are now turning to Beijing, where Trump is scheduled to land Wednesday for his first visit to China in almost a decade. The former president has already indicated that Iran will top the agenda for his expected extended talks with Chinese President Xi Jinping, leaving markets waiting for any potential diplomatic breakthrough that could ease regional tension.

Across Asian trading hubs, the bearish sentiment was widespread on Wednesday. Benchmark indices in Hong Kong, Shanghai, Taipei, Sydney, Bangkok, Manila and Kuala Lumpur all closed lower. Indonesia’s benchmark index tumbled nearly two percent, as the national currency rupiah plunged to an all-time low against the US dollar.

The US-Iran standoff had already sent global energy costs soaring, after commercial traffic through the Strait of Hormuz — a critical chokepoint that carries roughly one-fifth of the world’s total global oil supplies — came to a near-complete halt. Oddly, oil prices actually edged lower in early Asian trading on Wednesday: international benchmark Brent crude fell 0.6 percent to trade at $107.13 per barrel, while US benchmark West Texas Intermediate dropped 0.5 percent to settle at $101.63 a barrel.

Beyond Middle East tensions, a fresh wave of headwinds hit the global AI sector, adding further pressure to Asian markets. In South Korea, Seoul’s Kospi index — which is heavily weighted toward technology and AI firms — plunged five percent on Tuesday after a senior government official proposed a new social tax on AI profits, paired with a national dividend program to redistribute excess corporate gains from the technology. The index showed mild recovery on Wednesday after the presidential Blue House distanced itself from the proposal, but fresh trouble soon emerged for the country’s AI ambitions.

Samsung Electronics, the world’s leading producer of advanced semiconductors that power everything from AI systems to consumer electronics, saw its shares drop as much as 6.1 percent after negotiations between the firm and its largest labor union collapsed, Bloomberg reported. The union has threatened to launch a full strike, a move that industry analysts warn could cause severe supply chain disruptions and major financial losses across the global tech sector. South Korea has made becoming one of the world’s top three AI powers — alongside the US and China — a core national goal, and is set to triple its public AI investment this year, making current setbacks all the more damaging for market confidence.

Adding to global economic uncertainty, new US consumer price index data released on Tuesday confirmed that soaring energy costs are continuing to stoke inflation, with the index hitting a three-year high in April. The data reinforces investor concerns that sticky inflation could force central banks to keep interest rates higher for longer, a move that would further pressure equity valuations.

Investors are also turning their attention to earnings results from China’s two largest technology giants, Alibaba and Tencent, which are set to release their latest financial reports this week. Both firms have poured billions of dollars into AI development in recent years: e-commerce giant Alibaba is the developer of the widely used open-source Qwen large language model, popular among independent programmers, while gaming and social media conglomerate Tencent launched its own foundational AI model in 2023 and a public-facing chatbot in 2024. Despite their heavy investment, both firms have seen weak share performance in recent months, as they struggle to keep pace with breakthroughs from leading US AI competitors.

Across major global markets, the mixed picture continued through the early GMT trading window. On Wall Street, the Dow Jones Industrial Average closed up 0.1 percent at 49,760.56, while the S&P 500 fell 0.2 percent to 7,400.96, and the tech-heavy Nasdaq Composite dropped 0.7 percent to 26,088.2. In Europe, London’s FTSE 100 closed flat at 10,265.32, while Paris’ CAC 40 lost 1 percent to close at 7,979.92, and Frankfurt’s DAX 30 fell 1.6 percent to 23,954.92. In East Asia, Tokyo’s Nikkei 225 bucked the regional downturn to close up 0.3 percent at 62,911.46. In currency markets, the euro fell slightly to $1.1738 from Tuesday’s close of $1.1745, the pound edged up to $1.3538 from $1.3542, the dollar gained slightly against the yen to trade at 157.71 from 157.57, and the euro held steady against the pound at 86.70 pence.