S&P 500 Rips After Trump Announces Two-Week Iran Ceasefire and Hormuz Reopening

The Ceasefire

Hours before his own 8 PM ET deadline to begin destroying Iran's power grid and bridges, Trump posted on Truth Social that he would suspend all bombing for two weeks, contingent on Iran reopening the Strait of Hormuz. The about-face came after Pakistan's Prime Minister Shehbaz Sharif and Field Marshal Asim Munir intervened directly, requesting Trump hold off on what he himself called "the destructive force being sent tonight."

Trump cited a 10-point proposal from Iran that he described as a "workable basis on which to negotiate," claiming "almost all of the various points of past contention have been agreed to." Iran's Foreign Minister Abbas Araghchi confirmed the ceasefire and stated that safe passage through the Strait would resume "via coordination with Iran's Armed Forces." Israel also agreed to abide by the pause. Formal negotiations are set to begin Friday in Islamabad.

This is the first bilateral de-escalation since the conflict began in late February. But it follows a day of extraordinary brinkmanship — Trump had warned earlier Tuesday that "a whole civilization will die tonight, never to be brought back again" if no deal materialized. The whiplash from annihilation threat to ceasefire in under six hours is the kind of headline risk that has defined this conflict.

Oil Collapses, Equities Reprice

The Strait of Hormuz carries over 20% of the world's daily oil supply, and its effective closure since early March has been the single biggest input into global energy prices. The prospect of reopening triggered an immediate unwind.

WTI crude plunged more than 16% to below $94 per barrel, down from an intraday high of $117. Brent fell to roughly $91. Both moves rank among the sharpest single-session oil declines in decades. Natural gas, wholesale gasoline, and heating oil all traded sharply lower.

S&P 500 futures jumped over 2.5%, with Dow futures up 1,000 points and Nasdaq 100 futures gaining nearly 3%. The Russell 2000 rose 2.8%. Gold climbed 3.2% to $4,834, reflecting both a weaker dollar and residual hedging demand. Japan's Nikkei futures pointed to a 3% gap higher at open.

The regular session had closed roughly flat — the S&P 500 gained just 0.1% during hours as traders sat on their hands ahead of Trump's deadline. The entire move happened after-hours, which is why the 24/7 Hyperliquid perp captured it in real time while traditional equity markets were closed.

Why This Time Might Be Different (Or Not)

Traders have been burned by this exact setup before. Just last week, the S&P 500 rallied 2.4% on ceasefire hopes when both sides signaled willingness to negotiate — then gave it all back within hours after Trump's national address promised to hit Iran "extremely hard" for another 2-3 weeks.

The difference this time is structural, not rhetorical. Iran has committed to reopening Hormuz, which it had previously refused to negotiate on. Pakistan is acting as a formal intermediary with both sides agreeing to talks in Islamabad. And Trump himself described Iran's 10-point proposal as covering "almost all" points of contention — a level of specificity absent from prior walk-backs.

The risk is equally concrete: this is a two-week window, not a resolution. GasBuddy analyst Patrick De Haan noted the ceasefire likely means "another two weeks of status quo and barely anything getting through the Strait." Iran's safe passage offer comes with the caveat of "technical limitations" — the strait has been mined, and clearing shipping lanes takes time. If talks collapse after two weeks, the snapback in oil could be violent, and every point the S&P 500 has gained on this headline becomes a point of downside exposure.

Iran's Supreme National Security Council has hinted the ceasefire could extend beyond two weeks if negotiations progress. That's the bull case. The bear case is that this is the third time in ten days that markets have priced in peace and gotten escalation instead.

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