Before the rest of the world awakens, a subtle panic spreads throughout Asian trading floors. The damage done overnight on Wall Street is already being priced in by the time Tokyo opens at 9 a.m., and the faces at the screens in Yeouido or Marunouchi often tell you more than the numbers. A trader friend in Seoul summed up the atmosphere in early March, just one week into the US-Israel war with Iran, as “no one is speaking.” Chart analysts had deemed the KOSPI’s decline through support levels “unlikely this decade.” The stock that serves as the foundation for the South Korean market, Samsung Electronics, was losing money. Then, on March 4, the index saw an intraday decline of almost 12%, which was worse than the post-9/11 session and worse than most active traders had ever seen in a single sitting.
Tokyo fared a little better, but not much. In March, the Nikkei 225 dropped more than 9%, with a single-day decline of 7.6% being the third worst in its history. The reversal was severe for an index that had been teasing all-time highs in February due to semiconductor optimism and Warren Buffett’s prior wagers on Japanese trading houses. In other news, Australia’s ASX 200 lost roughly 7% and India’s Nifty 50 lost over 9%. Research notes from HSBC and Nomura circulated estimates that the rout destroyed over $12 trillion in equity value globally through March. When the dust settles, these numbers might be lowered, but it’s difficult to dispute the magnitude of the change.
Though they strike Asia with a strange cruelty, the mechanics are recognizable. About 20% of the world’s oil and LNG transit abruptly disappeared from the map when the Strait of Hormuz essentially closed to shipping in late February. Over 90% of Asian economies’ crude imports come from the Middle East, a fact that is often ignored in Western coverage. Nearly all of Japan’s oil is imported. South Korea is no exception. Thailand, the Philippines, India, Pakistan, and Taiwan. Each morning, they all wake up reliant on tankers that have stopped moving. The companies most vulnerable to input costs and export demand—the chipmakers, shipbuilders, petrochemical giants, and airlines—were the immediate casualties on the equity side as Brent crude surpassed $119 per barrel and gas prices in some markets increased by 30%.
| Subject | Details |
|---|---|
| Event | Asian equity market rout triggered by the US-Israel war with Iran |
| Period Covered | March–April 2026 |
| South Korea — KOSPI | Down roughly 17% in March; single-day plunge near 12% on March 4 |
| Japan — Nikkei 225 | Fell over 9% in March; 7.6% single-day drop, its third worst on record |
| India — Nifty 50 | Lower by more than 9% in March |
| Australia — ASX 200 | Down about 7% in March |
| Total Global Equity Value Erased | Over $12 trillion through March |
| Middle East Crude Dependence for Asia | Over 90% of regional oil imports |
| Strait of Hormuz Share of Global Oil & LNG | Around 20% |
| Hardest-Hit Sectors | Semiconductors, electronics, shipping, airlines, petrochemicals |
There was a reason why the suffering of South Korea stood out. In addition to being major players in the KOSPI, Samsung Electronics and SK Hynix are the foundation of the AI trade, which has boosted markets all over the world in the last two years.
The ripple extends from Seoul to Santa Clara when those two stocks fall 15% over the course of two weeks. Korean officials moved swiftly, with the Bank of Korea preparing $3 billion in emergency bond buybacks and the government announcing a $17 billion “wartime” budget. Finance Minister Choi used language that typically precedes intervention when discussing the potential for “bold steps” on the yen and won. The authorities in Seoul and Tokyo seem to be acutely aware of the narrow line that separates correction from crisis.
What takes place behind the ticker is what makes this episode unsettling rather than just dramatic. Hyundai’s shipyards in Ulsan slowed down momentarily. As tankers rerouted, port calls in Kaohsiung drastically decreased. For the first time in years, fuel lines formed at gas stations in Mumbai. When an energy shock leaves the page of a Bloomberg terminal and reaches a factory gate, it looks like this. Goldman Sachs analysts cautioned about stagflation risks in emerging Asia, including weaker currencies, slower growth, and sticky inflation. Through mid-March, the peso, won, and rupee all saw multi-year lows versus the dollar.
Early in April, reports of a potential two-week ceasefire caused Asian markets to experience one of their more intense rallies, with the Nikkei and KOSPI rising on April 8. However, in a matter of days, conflicting statements from Tehran and Washington, along with Iran regaining control of the Strait, pulled sentiment back down. As this develops, it’s difficult to avoid feeling as though the area is trapped in an uncontrollable headline cycle. It’s still unclear if a ceasefire can reverse the structural damage, such as the covert disruption of supply contracts, the abrupt acceleration of energy diversification plans, and the reorganization of who sells what to whom. Eventually, the charts will improve. They might not be supported by the underlying assumptions.
