COMPANIES. NVIDIA earnings in focus. Investors await results from NVIDIA Corporation this week. The chipmaker sits at the center of the artificial intelligence boom. Its guidance could move major indexes. The company holds one of the largest weightings in the Standard and Poor’s five hundred. Analysts say data center demand and margins will be critical. Any shift in revenue forecasts may trigger sharp moves across artificial intelligence suppliers and semiconductor stocks. ECONOMY. Supreme Court halts emergency tariffs. The Supreme Court of the United States ruled that tariffs imposed under emergency powers were unlawful. About one hundred seventy billion dollars in duties are affected. United States Customs will stop collections at twelve oh one a m Eastern Time. The decision raises uncertainty over federal revenue and possible refunds. POLITICS. Trump sets fifteen percent tariff. Donald Trump announced a new global tariff rate of fifteen percent using alternative authority. Trade partners signaled concern. The move may prompt fresh legal challenges. MARKETS. Gold rises on risk aversion. Spot gold climbed to a multi week high as investors sought safety. Equity futures weakened amid trade uncertainty and ahead of major technology earnings.