US stocks advanced on Tuesday, with the S&P 500 rising 0.9% to 6,945, its highest level since late February, as investors grew optimistic about potential de-escalation in the Middle East conflict. The Dow Jones also climbed 300 points, and the Nasdaq gained over 1%, after US Vice President JD Vance noted "a lot of progress" in the initial round of Iran negotiations in Pakistan, with reports suggesting a follow-up meeting could be scheduled within days. In earnings news, JPMorgan dipped 0.2% after revising down its net interest income guidance, while Wells Fargo tumbled 4.8% following disappointing results. Johnson & Johnson also edged down 0.4%, even after raising its 2026 revenue outlook. On the upside, BlackRock (+4%) and Citigroup (+1.6%) rallied on strong earnings, while American Airlines jumped 6.5% after reports that United Airlines CEO Scott Kirby proposed a potential merger. Additionally, Novo Nordisk’s US shares rose 2.7% after announcing an OpenAI partnership.