Market Overview - U.S. stock futures were slightly down as markets reopened, reflecting cautious sentiment among traders after recent volatility in the tech sector related to AI [1] - Bank of America's monthly global fund manager survey indicates an "uber-bullish" sentiment among investors regarding the economy and earnings for the year, despite concerns over potential overspending on AI infrastructure [1] Economic Indicators - Japan's GDP growth for Q4 was reported at an annualized 0.2%, significantly below the forecasted 1.6% gain, impacting the yen which eased 0.4% against the dollar [1] - In the UK, unemployment rose to 5.2%, the highest level in over ten years excluding the pandemic, leading to speculation of a potential interest rate cut by the Bank of England [1] Corporate Earnings - Walmart has joined the trillion-dollar club of company valuations, now ranking as the 12th most valuable publicly listed company globally [1] - Medtronic and Palo Alto Networks are among the companies set to report earnings this week, with Medtronic already beating quarterly profit estimates due to strong demand for heart devices [2]