Wall Street surges on Trump's Iran peace signals; Nasdaq jumps 2.5%

The market was pricing in permission to buy again
After two days of losses, Trump's Iran announcement triggered a broad rally across all major indices.

Nos mercados financeiros, o alívio tem um preço — e na quinta-feira esse preço subiu. A suspensão dos planos de ataque dos Estados Unidos ao Irão e a sinalização de um acordo de paz iminente por parte do presidente Trump transformaram dois dias de perdas numa recuperação expressiva em Wall Street, com o Nasdaq a avançar 2,54% e o S&P 500 a ganhar 1,75%. É o velho reflexo dos mercados: quando a ameaça de conflito recua, o capital avança — e com ele a aposta coletiva de que o futuro ainda vale a pena financiar.

  • Dois dias consecutivos de perdas tinham deixado os investidores em alerta máximo, com o espectro de um conflito no Médio Oriente a pesar sobre os preços do petróleo e as margens das empresas.
  • A declaração de Trump — afirmando ter alcançado 'um excelente acordo' com o Irão e aguardar apenas a assinatura dos documentos — funcionou como um sinal de descompressão imediato e de rara especificidade.
  • O crude WTI recuou quase 4% para 86,48 dólares por barril, aliviando um dos principais riscos inflacionistas e devolvendo aos investidores a margem de manobra que tinham perdido.
  • Os fabricantes de semicondutores lideraram os ganhos com uma subida sectorial de 8%, enquanto a Boeing, a RTX e a Lockheed Martin avançaram entre 4% e 6% numa sessão aquecida pela antecipação da maior OPV da história — a estreia da SpaceX com uma valorização de 75 mil milhões de dólares.
  • Analistas como Ulrike Hoffmann-Burchardi, do UBS, reconhecem que o caminho diplomático será acidentado, mas mantêm como cenário base a prevalência da diplomacia e a reorientação dos mercados para os fundamentos económicos.

A sessão de quinta-feira em Wall Street começou como um momento de respiração coletiva. Depois de dois dias de perdas, os mercados americanos recuperaram com força depois de o presidente Trump anunciar a suspensão dos planos de ataque ao Irão e sinalizar que um acordo de paz estava iminente — com a assinatura prevista para o fim de semana, na Europa, na presença do vice-presidente JD Vance. A especificidade das declarações fez a diferença: não era esperança, era um presidente a anunciar um acordo concluído.

O S&P 500 fechou a subir 1,75%, o Nasdaq avançou 2,54% e o Dow Jones ganhou 1,86%. Em paralelo, o petróleo WTI recuou quase 4% para 86,48 dólares por barril, dissipando um dos maiores receios inflacionistas dos últimos dias e abrindo espaço para que os investidores voltassem a assumir risco.

O sector tecnológico liderou a recuperação, com um índice de semicondutores a saltar 8%. Na área aeroespacial e de defesa, Boeing subiu mais de 6%, RTX avançou 3,83% e Lockheed Martin ganhou 4,48% — num ambiente aquecido pela antecipação da estreia bolsista da SpaceX na sexta-feira. A empresa de Elon Musk captou 75 mil milhões de dólares na maior oferta pública inicial da história, superando o recorde da Saudi Aramco em 2019, com 555,6 milhões de ações colocadas a 135 dólares cada.

Para analistas como Ulrike Hoffmann-Burchardi, do UBS, o caminho diplomático continuará a ser irregular, mas o cenário base aponta para a prevalência da diplomacia — e para um regresso dos mercados ao que realmente importa: os fundamentos económicos e o crescimento dos lucros, tanto nos Estados Unidos como na Europa.

The trading floor exhaled on Thursday. After two straight days of losses, American stock markets surged across the board, driven by a single shift in the geopolitical weather: President Trump announced he had suspended planned attacks on Iran and signaled that a peace agreement was within reach. The news rippled through the markets like a stone dropped into still water.

The S&P 500 climbed 1.75 percent to close at 7,394.30 points. The Nasdaq jumped 2.54 percent, landing at 25,809.66. The Dow Jones rose 1.86 percent to 50,848.75. These were not marginal moves. They represented a decisive reversal of momentum, a collective bet that the worst-case scenario—escalating conflict in the Middle East—had been averted.

Trump's statement that afternoon carried the weight of finality. He told reporters the United States had "just reached an excellent agreement on the war with Iran" and was "awaiting the finalization of documents," with completion expected within days. Vice President JD Vance would be present for the signing, he added, likely to occur over the weekend in Europe. The specificity mattered. This was not speculation or hope; it was a president declaring a done deal.

The market's response made economic sense. Oil prices, which had been climbing on conflict fears, retreated sharply. West Texas Intermediate crude fell nearly 4 percent to close at $86.48 per barrel. That decline eased one of the market's primary inflation concerns—the risk that Middle Eastern turmoil would send energy costs soaring and squeeze corporate profit margins. With that pressure relieved, investors felt permission to buy again.

Chip manufacturers led the charge. A key semiconductor index jumped 8 percent, signaling that traders believed the path forward was clear enough to take on technology stocks, which had been among the most vulnerable to recession fears. But the real spectacle was unfolding in aerospace and defense. RTX rose 3.83 percent. Boeing climbed 6.04 percent. Lockheed Martin gained 4.48 percent. These gains were partly anticipatory—SpaceX was set to debut on the public markets Friday with the largest initial public offering in history, and the sector was riding the momentum.

SpaceX's IPO itself was a statement of confidence. Elon Musk's company raised $75 billion, shattering the previous record set by Saudi Aramco in 2019. The company sold 555.6 million shares at $135 each. That a company built on space exploration and defense contracts could command that kind of capital in a single day suggested investors believed the world was stable enough, and the future prosperous enough, to bet on ambition.

Ulrike Hoffmann-Burchardi, an analyst at UBS, captured the shift in sentiment plainly. "Although the path to a resolution is probably bumpy," she told Bloomberg, "our base case is that diplomacy will ultimately prevail, allowing investors to refocus on resilient economic fundamentals and robust profit growth in both the US and Europe." That was the story the market was telling itself: the geopolitical crisis was solved, the economic picture was sound, and the time had come to buy.

We just reached an excellent agreement on the war with Iran, and we're awaiting the finalization of documents. We should conclude the process in the next few days.
— President Donald Trump
Although the path to a resolution is probably bumpy, our base case is that diplomacy will ultimately prevail, allowing investors to refocus on resilient economic fundamentals and robust profit growth.
— Ulrike Hoffmann-Burchardi, UBS
The Hearth Conversation Another angle on the story
Inventor

Why did oil prices matter so much to this rally? It seems like one factor among many.

Model

Oil prices are the transmission mechanism. When conflict threatens the Middle East, energy costs spike, which ripples through every company's supply chain and labor costs. That pushes inflation fears, which makes investors sell everything. When oil falls, that entire chain reverses.

Inventor

But Trump just said an agreement was reached. How much weight should we give that?

Model

In markets, announcements from sitting presidents carry enormous weight because they move capital instantly. Whether the agreement holds is a different question. The market was pricing in the announcement itself—the relief, the permission to buy again.

Inventor

The chip stocks jumped 8 percent. Was that about Iran, or something else?

Model

It was about Iran clearing the air. Semiconductors had been beaten down on recession fears. Once geopolitical risk receded, investors could focus on the sector's actual fundamentals—which are strong. The announcement gave them permission to rotate back in.

Inventor

And SpaceX's IPO—was that riding this wave, or did it create its own momentum?

Model

Both. The IPO was scheduled for Friday, so aerospace stocks were already priced for it. But the Iran news created the emotional backdrop—a sense that the future was open again, that big bets made sense. SpaceX raised $75 billion because investors believed in the company and believed the world was stable enough to support it.

Inventor

What happens if the Iran agreement falls apart?

Model

Then you get the reverse. The market had priced in peace. If that unwinds, oil spikes, inflation fears return, and the rally reverses. That's why analysts kept saying the path is "probably bumpy." They're hedging against exactly that scenario.

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