$NKLA Nikola Option Alert: Jul 17 $45 Calls at the Bid: 974 @ $19.5 vs 1041 OI; Ref=$64.53 [6/17/2020, 4:35:55 AM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $DIA $NOK $UUP $XOM $GDX $NIO $PINS $AAPL $BA $NET $UAL $NVAX