S&P 500 posts record close, dollar edges up; Nvidia shares down after the bell ReutersNvidia stock sinks after data center sales miss forecasts Yahoo FinanceAI boom boosts Nvidia despite 'geopolitical issues' BBCNVIDIA Announces Financial Results for Second Quarter Fiscal 2026 NVIDIA NewsroomNvidia Earnings Show Sales Jump Amid Strong Demand for A.I. Chips The New York Times