controlling interest
noun[C,usually singular]
FINANCE,STOCK MARKETukusif someone has acontrollinginterestin acompany, they own enoughsharesin it tocontrolitsmanagement:
have/own/hold a controlling interest (in sth)Thegroupholdsa 52%controllinginterestin the newtelecommunicationscompany.
buy/sell a controlling interestLastyeartheformerCEOsoldhiscontrollinginterestfor more than onebilliondollars.