$SPY SPDR S&amp;P 500 Option Alert: Dec 18 $300 Puts at the Ask: 471 @ $24.5 vs 24200 OI; Ref=$300.17 [5/29/2020, 1:52:08 PM] [+$500k Sweeps Above Midpoint] Other Sweeps on: $UTI $HBI $NBRV $DXC $YUM $NVDA $SCPL $GOLD $IVZ $CRM $PG $DIS