Premarket: Stocks nudge up; U.S. curbs on China tech rattle sentiment

Global shares traded cautiously higher on Tuesday, in light of growing evidence of a softening in the U.S. economy ahead of earnings from Nvidia , while the euro eased below the one-month highs that followed Germany's weekend election. Investors were rattled early on by an order from U.S. President Donald Trump to limit Chinese investments in strategic areas such as chips, AI and aerospace. Having pushed stocks on both sides of the Atlantic to record highs this month, investors are getting uneasy and Wednesday's results from Nvidia, which has come to characterise the boom in artificial intelligence investment, could prove…