COVID-19 KÜRESEL SALGINININ BORSA İSTANBUL’UN ÇEŞİTLENDİRME POTANSİYELİNE ETKİSİ: BİST 100 ve BİST 30’DAKİ PAY SENETLERİ ÜZERİNE BİR ARAŞTIRMA Journal title: Tarsus University Journal of The Faculty of Economics and Administrative Sciences Authors: Serkan NAS, Gamze VURAL Subject(s): Social Sciences