US Stocks-Wall Street ends sharply higher as AI optimism reignites and Treasury yields retreat

While Washington and Tehran exchanged threats through the weekend, US President Donald Trump said he would be open to meeting Iranian President Masoud Pezeshkian, who is expected to attend the UN General Assembly in New York this week. "We've been kind of programmed to follow the price of oil and the yield on the US 10-year, and if you look at those two things today, they've shifted from being headwinds to tailwinds for this market, at least in the near term," said Art Hogan, chief market strategist at B. Riley Wealth. Meta `META.O` shares soared after Wells Fargo hiked its price target on the social media platform following the recent launch of its Muse AI assistant. According to preliminary data, the S&P 500 `SPX` gained 113.72 points, or 1.49%, to end at 7,764.22 points, while the Nasdaq Composite `IXIC` gained 599.55 points, or 2.26%, to 27,122.09. The Dow Jones Industrial Average `DJI` rose 371.24 points, or 0.72%, to 52,053.88. The S&P 500 last Friday traded at just under 19 times expected earnings, its lowest valuation since 2023, according to LSEG data. AI-related heavyweights are responsible for much of the recent increase in earnings expectations. Investors remained wary of the interest-rate outlook after the US Federal Reserve last week raised rates for the first time in three years to fight inflation. Traders see a 50% chance of another hike next month, CME's FedWatch showed. Commentary from at least 10 central bank policymakers is due this week. Sept. 21 (Reuters) - The S&P 500 and Nasdaq ended sharply higher on Monday, lifted by gains in Advanced Micro Devices and other AI heavyweights, while Treasury yields retreated from recent highs and crude prices tumbled to an 11-day low on speculation about a potential breakthrough in Middle East talks at a UN meeting this week. Chip stocks rallied, with Intel `INTC.O` and Arm Holdings `ARM.O` both surging. Advanced Micro Devices `AMD.O` reached a market capitalization of $1 trillion for the first time. Investors pointed to signs that suggest spending on AI is still expanding, despite recent safety warnings from leaders of AI giants a week ago that triggered a global tech selloff. The benchmark US 10-year yield fell below the psychologically important 5% level as Brent crude futures `LCOc1` dipped below $100 a barrel to their lowest level since September 9, later settling at $100.34 per barrel. US-listed shares of companies exposed to Greenland rose following progress in diplomatic negotiations between the United States and Denmark about the status of Greenland. Greenland Mines `GRML.O` tripled in value, while Greenland Energy `GLND.O` more than doubled. A Chinese-US summit on Thursday could cover topics including potentially extending the trade truce between the two superpowers, the Iran war and regulation of AI. A report said the US proposed to extend the trade truce by six months, while China sought a longer extension. Bitcoin `BTC=` rose sharply to a more than seven-month high, lifting Coinbase `COIN.O` and Strategy `MSTR.O`. Paramount Skydance `PSKY.O` fell after a source told Reuters the company had reached a settlement with California and 11 other states suing to block its $110 billion merger with Warner Bros Discovery `WBD.O`.

US Stocks-Wall Street ends sharply higher as AI optimism reignites and Treasury yields retreat

Fed outlook, geopolitics and AI optimism drive market moves

Major indexes rise; traders still watch rates and policy comments

Wall Street ends sharply higher as AI and yields move in investors' favor

Other movers include Greenland names, bitcoin-linked stocks and Paramount Skydance

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