$NKLA Nikola Option Alert: Sep 18 $55 Calls Sweep (8) near the Ask: 451 @ $15.884 vs 2385 OI; Ref=$68.36 [6/15/2020, 10:59:25 AM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $VOD $AMAT $KBE $HXL $EEM $TDOC $WYNN $MSFT $TAL $BP $UNM $CRC