$SPY SPDR S&amp;P 500 Option Alert: Aug 21 $299 Puts at the Bid: 750 @ $10.6 vs 6560 OI; Ref=$304.56 [6/29/2020, 11:04:15 AM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $ARR $TWOU $JPM $RTX $QQQ $SVMK $ECPG $OLN $UGA $PENN $AMZN $MT