$SPY SPDR S&amp;P 500 Option Alert: Aug 21 $297 Puts at the Ask: 460 @ $13.18 vs 910 OI; Ref=$302.42 [5/28/2020, 2:52:29 PM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $ORCL $CHK $PSTG $LOGI $GDX $PGR $PEP $LB $DFS $AEE $EFA $FIZZ