Stocks fall as hopes for US-Iran peace deal diminish

US stocks sold off sharply on July 8 after President Donald Trump said he believed negotiations with Iran were effectively “over.” The Dow Jones Industrial Average dropped 575 points, roughly a 1% decline, while the S&P 500 and Nasdaq each fell 0.2%. Oil prices, predictably, moved in the opposite direction.

From handshake to breakdown

On June 17, the US and Iranian presidents signed what became known as the Islamabad Memorandum, a 60-day memorandum of understanding designed to create a framework for ending hostilities and reopening the Strait of Hormuz. That waterway handles roughly a fifth of the world’s oil supply. The MoU was brokered with help from Oman, Qatar, and Pakistan, countries that had facilitated discussions throughout 2025 and into 2026. Talks even moved to Switzerland at one point.

Markets loved it. US stocks rallied to record highs in late May and early June on the back of those positive signals. By mid-July, hostilities had resumed, effectively torpedoing the interim agreement less than a month after it was signed.

What Trump actually said

By early August, the situation hadn’t improved much. Trump framed ongoing discussions as a “last chance” for Iran. Iranian officials, meanwhile, characterized the talks as lacking direct engagement, noting that communication was happening through intermediaries rather than face-to-face negotiations.

The oil factor and market ripple effects

The 575-point Dow decline represented about 1% of the index’s value. Sectors tied to energy prices face the most immediate uncertainty, with knock-on effects extending to global trade, particularly for companies with supply chains running through the Middle East or relying on stable shipping lanes. Any prolonged disruption to the Strait of Hormuz would ripple through industries far removed from oil production itself.