$SPY SPDR S&amp;P 500 Option Alert: Aug 21 $308 Puts Sweep (19) above Ask!: 1026 @ $9.875 vs 2638 OI; Ref=$311.62 [7/1/2020, 10:25:30 AM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $RAD $ADSK $NRG $MSFT $LC $GLD $IONS $NUGT $ZTO $PRVB $FCX $PCG