{"id":72347,"date":"2026-09-28T18:08:21","date_gmt":"2026-09-28T22:08:21","guid":{"rendered":"https:\/\/www2.stockmarketwatch.com\/stock-market-news\/market-volatility-intensifies-as-trump-signals-potential-iran-nuclear-deal-amid-global-supply-concerns\/72347\/"},"modified":"2026-09-28T18:08:21","modified_gmt":"2026-09-28T22:08:21","slug":"market-volatility-intensifies-as-trump-signals-potential-iran-nuclear-deal-amid-global-supply-concerns","status":"publish","type":"post","link":"https:\/\/www2.stockmarketwatch.com\/stock-market-news\/market-volatility-intensifies-as-trump-signals-potential-iran-nuclear-deal-amid-global-supply-concerns\/72347\/","title":{"rendered":"Market Volatility Intensifies as Trump Signals Potential Iran Nuclear Deal Amid Global Supply Concerns"},"content":{"rendered":"<h2>Key Takeaways<\/h2>\n<ul>\n<li><strong><a href=\"https:\/\/stockmarketwatch.com\/stock\/NVDA\" data-internallinksmanager029f6b8e52c=\"15\" title=\"stock: NVDA\">Nvidia<\/a> (<a href=\"\/stock\/NVDA\">NVDA<\/a>)<\/strong> authorized a record-breaking <strong>$150 billion<\/strong> increase to its share buyback program, bringing its total capacity to <strong>$235 billion<\/strong> through 2028.<\/li>\n<li><strong>U.S. Treasury yields<\/strong> surged to a 19-year high, with the <strong>10-year rising to 5.23%<\/strong>, triggering a <strong>3.9% drop in <a href=\"https:\/\/stockmarketwatch.com\/metal\/gold\" data-internallinksmanager029f6b8e52c=\"4\" title=\"gold price today\">gold<\/a><\/strong> to $4,118.66 as markets price in an October Fed rate hike.<\/li>\n<li><strong>President Trump<\/strong> announced a <strong>$15 billion steel plant<\/strong> in Iowa backed by India\u2019s <strong>Essar Group<\/strong>, expected to create 2,000 jobs and produce 10 million tons of steel annually by 2030.<\/li>\n<li><strong>Paramount Skydance (<a href=\"\/stock\/PSKY\">PSKY<\/a>)<\/strong> launched a massive <strong>$44 billion bond sale<\/strong> to finance its acquisition of <strong>Warner Bros. Discovery (<a href=\"\/stock\/WBD\">WBD<\/a>)<\/strong>, marking one of the largest corporate debt offerings in history.<\/li>\n<li><strong>Geopolitical tensions<\/strong> remain high as <strong>Iran<\/strong> fired warning shots near the <strong>Strait of Hormuz<\/strong>, even as Trump suggested a willingness to offer economic concessions for nuclear progress.<\/li>\n<\/ul>\n<h2>Global Markets and Macro Trends<\/h2>\n<p><strong>U.S. stocks and bonds fell sharply<\/strong> on Monday as the ongoing standoff between the U.S. and Iran fueled oil-market volatility and renewed fears of persistent inflation. The <strong><a href=\"https:\/\/stockmarketwatch.com\/indices\/sp500\/today\" data-internallinksmanager029f6b8e52c=\"3\" title=\"snp500 today\">S&amp;P 500<\/a> dropped 0.8%<\/strong> and the <strong>Nasdaq 100 fell 1.1%<\/strong> as <strong>Brent crude<\/strong> held steady near <strong>$105 per barrel<\/strong>. Investors are increasingly pivoting toward defensive postures as hopes for an immediate diplomatic breakthrough in the Middle East begin to fade.<\/p>\n<p>The fixed-income market saw significant selling pressure, pushing the <strong>10-year Treasury yield to 5.23%<\/strong>, its highest level since 2007. This spike has led to a dramatic <strong>3.9% decline in gold prices<\/strong>, which settled at <strong>$4,118.66<\/strong>, as the opportunity cost of holding non-yielding assets rises. Market participants are now laser-focused on upcoming U.S. consumer spending and payrolls data to gauge the likelihood of an <strong>October Federal Reserve rate hike<\/strong>.<\/p>\n<h2>Corporate Developments and M&amp;A<\/h2>\n<p>In a historic move for the semiconductor industry, <strong><a href=\"https:\/\/stockmarketwatch.com\/stock\/NVDA\" data-internallinksmanager029f6b8e52c=\"15\" title=\"stock: NVDA\">Nvidia<\/a> (<a href=\"\/stock\/NVDA\">NVDA<\/a>)<\/strong> expanded its buyback authorization by <strong>$150 billion<\/strong>. CEO Jensen Huang cited the &quot;once-in-a-generation platform shift to AI&quot; as the primary driver for the company&#39;s massive cash generation. Meanwhile, <strong><a href=\"https:\/\/stockmarketwatch.com\/stock\/AMD\" data-internallinksmanager029f6b8e52c=\"16\" title=\"stock: AMD\">AMD<\/a> (<a href=\"\/stock\/AMD\">AMD<\/a>)<\/strong> reached an agreement to acquire <strong>World Labs for $8.2 billion<\/strong> to bolster its AI research and robotics capabilities.<\/p>\n<p>The media landscape is also shifting as <strong>Paramount Skydance (<a href=\"\/stock\/PSKY\">PSKY<\/a>)<\/strong> secured enough investor demand for a <strong>$44 billion bond sale<\/strong>. The proceeds will fund its high-profile acquisition of <strong>Warner Bros. Discovery (<a href=\"\/stock\/WBD\">WBD<\/a>)<\/strong>. In the aviation sector, <strong>Boeing (<a href=\"\/stock\/BA\">BA<\/a>)<\/strong> faced a setback as the <strong>737 MAX 10 certification<\/strong> was delayed yet again due to a newly identified software issue, further complicating the manufacturer&#39;s delivery timeline.<\/p>\n<h2>Energy and Geopolitics<\/h2>\n<p>The <strong>United Kingdom<\/strong> is reportedly lobbying the U.S. government for an exemption from any potential <strong>diesel export ban<\/strong>. This comes as the Trump administration considers tighter controls on domestic fuel supplies to combat rising prices at home. European allies remain concerned that a U.S. ban would cause record price spikes in regions that have become heavily dependent on American diesel following the shift away from Russian energy.<\/p>\n<p>In the Persian Gulf, <strong>Iran&#39;s state TV<\/strong> confirmed that sounds heard on <strong>Qeshm Island<\/strong> were warning shots fired at &quot;violating vessels&quot; in the <strong>Strait of Hormuz<\/strong>. Despite the military friction, <strong>President Trump<\/strong> told reporters that U.S. negotiators have engaged with Iranian counterparts. Reports suggest the U.S. may be willing to offer <strong>economic concessions<\/strong> and release frozen funds if Tehran agrees to shutter its nuclear program, though no formal agreement has been reached.<\/p>\n<h2>Industrial and Index Changes<\/h2>\n<p><strong>President Trump<\/strong> unveiled plans for a <strong>$15 billion steel manufacturing plant<\/strong> in Lee County, Iowa. The project, managed by <strong>Mesabi Metallics<\/strong> (a subsidiary of India&#39;s <strong>Essar Group<\/strong>), will be supplied by a new <strong>$2.5 billion iron ore mine<\/strong> in Minnesota. The administration expects the facility to be the largest in U.S. history, aiming for an eventual output of <strong>10 million tons of steel<\/strong> per year to support domestic infrastructure.<\/p>\n<p>Finally, <strong>MSCI<\/strong> announced a reclassification of <strong>Corteva (<a href=\"\/stock\/CTVA\">CTVA<\/a>)<\/strong>, moving the company from Large Cap to <strong>Mid Cap<\/strong> status. Simultaneously, the index provider will add <strong>Vylor (<a href=\"\/stock\/VYLR\">VYLR<\/a>)<\/strong>\u2014the newly spun-off seed entity from Corteva\u2014to its <strong>Global Standard Indexes<\/strong> effective October 2, 2026. These changes are expected to trigger significant rebalancing among exchange-traded funds and institutional portfolios.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Key Takeaways Nvidia (NVDA) authorized a record-breaking $150 billion increase to its share buyback program, bringing its total capacity to 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