#Pfizer $PFE Says #Coronavirus Vaccine Could Be Available By Fall, US Clinical Trials To Begin Next, Pending Approval fFom Health Regulators. Stock closed 1.1% lower at $37.91 on Tuesday. The shares traded 0.63% higher in the after-hours session at $38.15. #COVID19 #MarketNews https://t.co/Tr5QBU5TPX