U.S. stock indexes saw gains on Monday, with the S&P 500 increasing by 0.7%, despite President Trump’s announcement of a 25% tariff on steel and aluminum imports. This news generated concerns about inflation, prompting a reassessment of expected interest rate cuts by the Federal Reserve. While the S&P 500 rose significantly, Asian stocks declined, including a 0.62% drop in Hong Kong's Hang Seng index. Meanwhile, gold prices surged to new highs, indicating market anxiety over trade tensions. As the Fed prepares for a testimony later this week, the economic outlook remains uncertain amidst these developments.