huge day for $PFE(+5%/top Dow 30 gainer/vaccine news); https://t.co/o6M21dVdag, pullback from 200D(-14%); https://t.co/XWxoQ57kUN, held Apr. lows, long, #pfizer Pfizer $spx $dji $mrk $lly $abt $pph #twows https://t.co/BxgnIx2Qu2