short squeeze
noun[C]
STOCK MARKETukusasituationin which too manyshortsellersaretryingtobuyback the samesharesso thattheirpricerisessuddenlyinsteadoffalling:
Thestockhas beenrallyingsharplyinrecentweeks,leadingto aflurryofbuying,resultingin what someanalystshave called a "shortsqueeze''.