US stock futures faltered in their rebound bid on Friday, set to resume a tech-led sell-off as investors weighed signals on the jobs market and the odds that the AI investment boom will pay off. Futures on the Dow Jones Industrial Average (YM=F) fell 0.3%, and the S&P 500 (ES=F) slid 0.5%, losing hold of earlier slight gains. Contracts on the tech-heavy Nasdaq 100 (NQ=F) retreated roughly 0.7% following Thursday's sharp losses for US gauges led by megacap tech and AI names. Stocks are on track to close ...