us stock index futures slumped on friday with travel bank and commoditylinked stocks bearing the brunt of the selloff as the discovery of a new and possibly vaccineresistant coronavirus variant spooked investors ahead of a short trading session at 635 et dow eminis were down 221 at 34960 sp 500 eminis were down 168 at 462025 while nasdaq 100 eminis were down 096 at 162095