Wall Street surged Thursday afternoon after President Donald Trump announced he had called off planned military strikes against Iran, citing diplomatic progress that he said had reached the highest levels of Tehran's leadership. The Dow Jones Industrial Average climbed 698 points, the S&P 500 gained nearly 78 points, and the Nasdaq Composite advanced 350 points, a broad rebound that followed a punishing selloff the day before.

The reversal came just hours after Trump had posted on Truth Social that the United States would hit Iran "VERY HARD TONIGHT" and seize "total control" of Iran's oil and gas industries. That threat followed two days of escalating back-and-forth attacks between Washington and Tehran that had pushed the Middle East closer to full-scale war.

Then the tone shifted. Trump posted again, this time saying he had canceled the strikes. The reason, in his words: discussions with the Islamic Republic of Iran had been "brought to the highest level of Iranian leadership and approved." He added that "discussions and final points have been, in both concept and great detail," approved by the United States, Israel, and other regional allies. He did not offer specifics about the substance of those talks, Newsmax reported.

From threat to diplomacy in hours

The speed of the pivot was striking. In a matter of hours, Trump moved from an explicit military threat, one that markets clearly took seriously, to suggesting real progress had been made in extending a fragile ceasefire. No details about the ceasefire or the specific regional powers involved were disclosed.

That ambiguity did not stop investors from betting on de-escalation. The Dow jumped 1.40% to 50,617.83. The S&P 500 rose 1.07% to 7,344.91. The Nasdaq gained 1.40% to reach 25,521.18. All three indexes had fallen more than 1% the previous session.

Market breadth confirmed the rally was not confined to a handful of names. On the New York Stock Exchange, advancing issues outnumbered decliners by a 2.62-to-1 ratio, and the exchange recorded 170 new highs against 113 new lows. On the Nasdaq, 3,366 stocks rose while 1,358 fell, with advancers leading decliners by a 2.48-to-1 margin.

Oil prices dropped sharply as the immediate threat of a wider Middle East conflict receded. The move in crude underscored how seriously energy markets had priced in the possibility of direct U.S. military action against a major oil-producing nation.

A market still nursing wounds

Thursday's gains were welcome, but they did not erase the damage from recent weeks. Technology stocks, measured by the S&P 500 Technology Index, remained down 11% from their June 2 record closing high. The broader S&P 500 had also hit a record close in early June before pulling back.

Robert Phipps, a director at Per Stirling Capital Management in Austin, Texas, framed the bounce in technical terms rather than geopolitical ones:

"Our technical indicators are looking relatively oversold here. Just as we had gone up too far, too fast, we came down too far, too fast."

That assessment suggests at least some of Thursday's move reflected mechanical buying after a steep decline, not just relief over Iran. But the timing left little doubt about the catalyst. Markets had been falling. Trump threatened strikes. Markets fell further. Trump canceled the strikes. Markets surged.

The administration has been eager to showcase wins on multiple fronts, from new platforms promoting American agriculture to enforcement actions at the border. A diplomatic off-ramp with Iran, however provisional, fits that pattern.

Oracle stumbles, SpaceX waits in the wings

Not every stock joined the rally. Oracle shares fell 11.2% after the company projected fiscal 2027 capital spending above Wall Street estimates. The drop was a reminder that even in a strong tape, individual earnings surprises can overwhelm the broader trend.

Investors were also looking ahead to Friday, when Elon Musk's SpaceX was expected to make its market debut at a valuation of $1.75 trillion. A listing of that size would be one of the largest in history and could set the tone for risk appetite heading into the following week.

The SpaceX debut arrives at a moment when Trump's influence over both markets and geopolitics is difficult to separate. His executive authority continues to face legal scrutiny on multiple fronts, with the Supreme Court set to weigh several major cases testing those boundaries.

What Trump's reversal signals

The president's willingness to move from an explicit strike threat to a diplomatic pause in a single afternoon will draw different readings from different quarters. Hawks will note the credibility that comes from making a threat and then extracting concessions before following through. Skeptics will ask what, exactly, Iran agreed to, a question Trump's posts did not answer.

What is clear is that the threat was not empty theater. Strikes were expected to be carried out hours after Trump's initial post. The cancellation came only after what Trump described as discussions approved by a broad coalition including the United States and Israel. Whether that coalition extends to other Gulf states or regional players remains unstated.

The administration has demonstrated a pattern of using maximum pressure to force negotiations, on trade, on immigration, and now on Iran's nuclear and military posture. The approach has drawn criticism from opponents who call it reckless, but Thursday's market reaction suggests investors, at least, preferred the result to the alternative.

Trump's political reach extends well beyond Washington. His endorsement in the Texas Senate primary runoff and the rise of pro-Trump candidates abroad reflect an expanding sphere of influence that shapes outcomes far from the Oval Office.

Open questions remain

Several important details are still missing. The specific attacks that constituted the two days of U.S.-Iran exchanges were not described. The nature of the ceasefire Trump referenced was not explained. The identity of the regional allies who approved the "discussions and final points" was not disclosed.

Those gaps matter. Markets rallied on the headline, but sustained gains will depend on whether the diplomatic progress Trump described holds up under scrutiny, and whether Tehran's leadership follows through on whatever commitments were made.

The administration has also been working to address failures inherited from the Biden years on issues from immigration to government accountability. On Iran, the question is whether Trump's approach produces a durable outcome or merely delays the next escalation.

For now, the Dow is up 698 points and the bombs did not fall. In a week that started with markets sliding and the Middle East on edge, that counts as a good day. Whether it becomes a good deal depends on what comes next, and on details the president has yet to share.