US tech stocks tumble after data centre setback sparks investor concerns Tech US tech stocks fell on Wednesday after news that software company Oracle had lost a key backer for its data centre project, reigniting investors’ concerns about AI companies’ spending. The tech-heavy Nasdaq dropped 1.8 per cent to $22,693.32 (£ 17,975.06), finishing at its lowest level since late November, while Oracle fell 5.4 per cent to [...]