U.S. stock index futures remained largely flat as investors assessed President Donald Trump's recent tariff threats, particularly a proposed 25% tariff on autos, chips, and pharmaceuticals. The market showed signs of volatility, with the S&P 500 futures dipping by 0.2% and European markets, including the Stoxx 600 Index, declining by 0.7%. Despite initial concerns, U.S. equities ended modestly higher, with the Dow Jones, S&P 500, and Nasdaq closing up 16 basis points, 24 basis points, and 7 basis points, respectively. The S&P 500 achieved its second consecutive all-time closing high as investors digested the minutes from the Federal Reserve's January meeting, which indicated a cautious approach towards interest rates amid the uncertainty created by Trump's tariff announcements. The overall market sentiment was impacted by geopolitical worries alongside the tariff discussions.