$SPY SPDR S&amp;P 500 Option Alert: Oct 16 $300 Puts at the Ask: 2362 @ $20.02 vs 8572 OI; Ref=$299.79 [6/26/2020, 10:32:11 AM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $RRC $CHGG $UNH $DVAX $MRVL $USO $HEXO $SEAS $MOMO $STZ $KEYS $GS