Top 15 changes to # of Robinhood users holding stocks so far today  1 Vexart $VX 2 GAP $GPS 3 Albertsons $ACI 4 Luckin Coffee $LK 5 $IBIO 6 VBI Vaccines $VBIV 7 Ideanomics $IDEX 8 Tortoise $SHLL 9 Workhorse $WKHS 10 Ford $F 11 $ZOM 12 Facebook $FB 13 $CTXR 14 $PLUG 15  $GNUS