{"id":60057,"date":"2026-03-22T20:38:31","date_gmt":"2026-03-23T00:38:31","guid":{"rendered":"https:\/\/stockmarketwatch.com\/stock-market-news\/asia-markets-crater-as-us-iran-tensions-ignite-nikkei-plunges-4\/60057\/"},"modified":"2026-03-22T20:38:31","modified_gmt":"2026-03-23T00:38:31","slug":"asia-markets-crater-as-us-iran-tensions-ignite-nikkei-plunges-4","status":"publish","type":"post","link":"https:\/\/www2.stockmarketwatch.com\/stock-market-news\/asia-markets-crater-as-us-iran-tensions-ignite-nikkei-plunges-4\/60057\/","title":{"rendered":"Asia Markets Crater as US-Iran Tensions Ignite; Nikkei Plunges 4%"},"content":{"rendered":"<h2>Key Takeaways<\/h2>\n<ul>\n<li><strong>Asia-Pacific markets plunged<\/strong> on Monday, with the <strong>Nikkei 225<\/strong> and <strong>KOSPI<\/strong> dropping over <strong>4%<\/strong> following reports of explosions in Tehran and a <strong>48-hour ultimatum<\/strong> from President <a href=\"https:\/\/thestockmarketwatch.com\/live\/trump-stock-market\" data-internallinksmanager029f6b8e52c=\"8\" title=\"Trump\">Trump<\/a>.<\/li>\n<li><strong>Goldman Sachs (<a href=\"\/stock\/GS\">GS<\/a>)<\/strong> raised its 2026 Brent crude forecast to <strong>$85\/bbl<\/strong>, assuming Strait of Hormuz flows could drop to just <strong>5% of normal<\/strong> for a six-week period.<\/li>\n<li><strong>Elliott Investment Management<\/strong> has taken a <strong>multibillion-dollar stake<\/strong> in chip-design software maker <strong>Synopsys (<a href=\"\/stock\/SNPS\">SNPS<\/a>)<\/strong>, pushing for operational and financial improvements amid AI-driven chip complexity.<\/li>\n<li>The Japanese government is set to tap <strong>\u00a5800 billion<\/strong> in budget reserves to subsidize gasoline prices as energy costs surge due to Middle Eastern disruptions.<\/li>\n<li>South Korea&#39;s <strong>Samsung Electronics (<a href=\"\/stock\/005930.KS\">005930.KS<\/a>)<\/strong> saw shares slide over <strong>4%<\/strong> as regional tech sentiment soured despite provisional data showing a <strong>$12.13 billion<\/strong> trade surplus.<\/li>\n<\/ul>\n<p>Asian equity markets collapsed on Monday morning as geopolitical tensions in the Middle East reached a breaking point. The <strong>Nikkei 225 (<a href=\"\/stock\/%5EN225\">^N225<\/a>)<\/strong> extended its selloff to <strong>4%<\/strong>, breaking below the critical <strong>52,000<\/strong> level, while South Korea\u2019s <strong>KOSPI<\/strong> plunged <strong>4.7%<\/strong> and Australia\u2019s <strong>ASX 200<\/strong> dropped <strong>1.6%<\/strong>.<\/p>\n<p>The market rout follows reports of <strong>explosions across Tehran<\/strong> and an airstrike on a radio station in the Iranian port city of <strong>Bandar Abbas<\/strong>. Investors are reacting to a <strong>48-hour ultimatum<\/strong> issued by President <a href=\"https:\/\/thestockmarketwatch.com\/live\/trump-stock-market\" data-internallinksmanager029f6b8e52c=\"8\" title=\"Trump\">Trump<\/a>, who warned that the U.S. would &quot;obliterate&quot; Iranian power plants if the <strong>Strait of Hormuz<\/strong> is not fully reopened to global shipping.<\/p>\n<p><strong>Goldman Sachs (<a href=\"\/stock\/GS\">GS<\/a>)<\/strong> responded to the escalation by raising its <strong>2026 Brent crude forecast to $85\/bbl<\/strong>. Analysts at the bank warned that a prolonged disruption could see flows through the Strait of Hormuz\u2014a vital artery for 20% of global oil\u2014fall to just <strong>5% of normal levels<\/strong> for up to six weeks.<\/p>\n<p>In the corporate sector, <strong>Elliott Investment Management<\/strong> has reportedly built a <strong>multibillion-dollar stake<\/strong> in <strong>Synopsys (<a href=\"\/stock\/SNPS\">SNPS<\/a>)<\/strong>. The activist investor is pushing for better execution and profitability, arguing that the company\u2019s shares have underperformed despite its essential role in the <strong>AI-driven semiconductor boom<\/strong>.<\/p>\n<p>Japan\u2019s top currency diplomat, <strong>Atsushi Mimura<\/strong>, stated that the government is &quot;ready to act on all fronts&quot; against extreme currency volatility. To mitigate the domestic impact of soaring energy costs, the Japanese government plans to tap approximately <strong>\u00a5800 billion<\/strong> in budget reserves to curb rising gasoline prices.<\/p>\n<p>South Korean markets faced additional pressure as <strong>Samsung Electronics (<a href=\"\/stock\/005930.KS\">005930.KS<\/a>)<\/strong> shares fell more than <strong>4%<\/strong>. The decline came despite provisional customs data for March 1-20 showing a <strong>$12.13 billion trade surplus<\/strong>, as a <strong>19.7% surge in imports<\/strong> highlighted the growing cost of energy and raw materials.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Key Takeaways Asia-Pacific markets plunged on Monday, with the Nikkei 225 and KOSPI dropping over 4% following reports of explosions 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