$SPY SPDR S&amp;P 500 Option Alert: Dec 18 $300 Puts Sweep (11) near the Ask: 500 @ $17.5 vs 36478 OI; Ref=$315.435 [7/8/2020, 10:15:35 AM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $WMT $SPY $ON $IP $SONO $USO $NKE $SRNE $TME $HTHT $PBR $JPM