The Nasdaq rose 0.9% and the S&P 500 gained 0.3% on Monday, supported by a rebound in chip stocks after sharp losses in previous session and renewed optimism surrounding AI. Investor sentiment was also boosted after reports indicated that Iran and Israel had halted their exchanges of strikes, while President Trump said negotiations were continuing despite the attacks. As a result, oil prices gave back most of their earlier gains. Among semiconductor stocks, Nvidia advanced 1.7%, Broadcom climbed 2.8%, AMD surged 5.1%, and Micron Technology jumped 9.9%. Tesla also posted a strong gain, rising 4.6%. In contrast, the Dow Jones fell by 81 points. Apple declined 1.9% after its next-generation AI platform failed to impress investors. Microsoft and Visa also underperformed, each losing 1.2%.