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US S&P 500 up 1.7% and Nasdaq 3.1% on Monday after a tentative US‑Iran cease‑fire deal eases oil worries and fuels AI rally.
US equity indexes jumped on Monday, with the S&P 500 gaining 1.7% and the Nasdaq Composite soaring 3.1% after a tentative agreement between Washington and Tehran signaled a possible end to the Israel‑Iran conflict and a return to steadier energy supplies [2].
The market lift came as oil prices fell sharply; Brent crude slipped nearly 5% to just above $83 a barrel, its lowest level since the conflict began, while U.S. West Texas Intermediate traded around $91. Lower energy costs reduce inflation pressure and give the Federal Reserve more leeway to keep rates steady, a factor that buoyed growth‑heavy stocks [1].
Tech shares led the rally. Nvidia’s CEO Jensen Huang called Friday’s pullback a buying opportunity, prompting investors to re‑enter AI‑related equities. The Nasdaq’s gain was amplified by a 19.6% jump in SpaceX shares after the company’s record‑breaking market debut, which also created the world’s first trillion‑dollar billionaire, Elon Musk [2].
Analysts note that the optimism is tied to the easing of geopolitical risk rather than a fundamental shift in monetary policy. “The war is over, so that side of the argument falls away,” said Jay Goldberg of Seaport Research Partners, highlighting how the removal of the conflict‑risk premium has freed capital for riskier assets [2]. Yet the deal’s practical impact on oil flows will take months, with about 500 vessels still queued at the Strait of Hormuz and lingering concerns over naval mines, according to the International Shipping Chamber [2].
The rally also coincided with a modest dip in Treasury yields, as the 10‑year note fell to 4.51% from 4.55% on Friday, further supporting growth stocks that are sensitive to discount rates [1].
Investors now face the upcoming U.S. consumer‑price report, which will reveal whether the recent energy‑price dip is translating into lower inflation and how the Fed might respond. The market’s next move hinges on whether the tentative cease‑fire can translate into sustained oil‑price stability or if renewed tensions will reignite risk‑off sentiment.
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AI-assisted synthesis by the TrendWatcher Editorial Desk · sourced from 4 outlets · Jun 16, 2026 · How we report
The S&P 500 has returned a median of 17% and the Nasdaq Composite has returned a median of 40% in the 12 months following their respective first closes in bear market territory since 1985.
The Stock Market is experiencing downward pressure due to rising oil prices, 10-year Treasury yields topping 5%, and uncertainty surrounding the Federal Reserve's upcoming interest rate decision.
Since 1985, corrections in the S&P 500 have occurred approximately once every two years, while corrections in the Nasdaq Composite have occurred about once every 18 months.