The S&P 500 and Nasdaq composite indexes finished sharply higher Monday, propelled by strong gains in Advanced Micro Devices and other artificial intelligence-related companies. Investors focused on technology sector momentum as broader market sentiment improved.

Advanced Micro Devices led the advance among chipmakers, contributing to the Nasdaq's outperformance. Other AI-heavy names also posted solid gains, reflecting continued enthusiasm for the sector's growth prospects. The S&P 500 followed the Nasdaq higher, closing the session with notable advances across multiple sectors.

Treasury yields pulled back from recent peaks during the trading day. The retreat in yields provided additional support for equities, particularly growth-oriented stocks sensitive to interest rate expectations.

Crude oil prices tumbled to their lowest level in 11 days. Market participants pointed to speculation surrounding a potential breakthrough in Middle East talks at a United Nations meeting as a key factor behind the drop in energy prices. Lower oil costs can ease input expenses for businesses and consumers alike.

The combination of technology-driven equity gains and declining energy prices underscored the market's focus on innovation and geopolitical developments. Trading volumes remained elevated as participants positioned for further updates on both fronts.

Analysts noted that AI-related investments continue to drive significant portions of market returns in recent sessions. Companies advancing semiconductor and data infrastructure technologies benefited from sustained capital inflows.

The session's mixed signals across asset classes highlighted the interplay between equity markets, fixed income, and commodities. Declining yields and softer oil prices offered a supportive backdrop for stocks even as energy producers faced pressure.

Market observers will monitor upcoming economic data releases and any developments from the United Nations gathering for further direction. The strong close in major indexes reinforced the role of technology leadership in sustaining broader gains.