US stock futures edged higher on Tuesday, eyeing a cautious comeback after a fragile start to December trading that saw a sell-off on Wall Street and in crypto. S&P 500 (ES=F) futures rose 0.3%, while those on the tech-heavy Nasdaq 100 (NQ=F) added 0.4%. Contracts on the Dow Jones Industrial Average (YM=F) moved up roughly 0.2%. Stocks are poised to regain some ground as markets begin to shake off the risk-off sentiment that dominated on Monday, snapping five-day winning streaks for the three major US i ...