$SPY SPDR S&amp;P 500 Option Alert: Sep 18 $323 Puts Sweep (4) near the midpoint: 509 @ $24.95 vs 2494 OI; Ref=$306.78 [6/2/2020, 1:15:21 PM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $GWRE $USO $EPR $CAT $SQQQ $FOLD $HYG $CVX $SLV $UNP $PCG $AMBA