U.S. stock markets surged on June 12, 2026, after President Donald Trump announced the United States expects to sign a peace deal with Iran soon [1].

The rally reflects a sudden shift in investor sentiment, as the cancellation of planned military strikes removed a primary catalyst for global economic instability. Markets had been pricing in the risk of a direct conflict that could disrupt energy supplies and international trade.

Trump said the United States has called off the planned strikes against Iran [2]. This announcement coincided with his statement that a peace agreement is close, which effectively lifted the immediate threat of escalation in the region [1].

Wall Street responded with a sharp rebound, with stocks recovering from a five-week low [3]. Major indexes saw their biggest daily percentage gains since April 8, 2026 [4]. The surge was driven by the relief that a diplomatic resolution appeared more likely than a military confrontation.

While the markets reacted positively, tensions continue to linger in the Strait of Hormuz [1]. The region remains a critical chokepoint for global oil shipments, meaning any fluctuation in the diplomatic process could quickly trigger new volatility in equity and commodity markets.

Investors are now monitoring the specific terms of the expected deal to determine if the peace is sustainable. The shift from military planning to diplomatic negotiation has provided a temporary window of stability for global portfolios [2].

U.S. stock markets surged on June 12, 2026, after President Donald Trump announced the United States expects to sign a peace deal with Iran soon

The immediate market reaction demonstrates how heavily U.S. equities are tied to geopolitical stability in the Middle East. By pivoting from the threat of military strikes to the promise of a signed deal, the administration removed the 'war premium' that had suppressed stock prices over the previous five weeks. However, the continued tensions in the Strait of Hormuz suggest that the underlying structural risks remain, and the market's stability is currently dependent on the successful execution of this pending agreement.