BusinessCompaniesNews Blackrock becomes major shareholder in Borr Drilling By portnews - June 28, 2022 0 117 FacebookTwitterPinterestWhatsAppReddItEmailTumblrTelegramMixVKDiggLINEViberNaverFlipCopy URLKakao StoryGettrKoo Borr Drilling Chair Tor Olav Trøim. Multinational asset manager Blackrock now owns 5.67% of Borr Drilling’s shares. The equity purchase is announced the same day as Borr Drilling sells three rigs under construction to strengthen the company’s strained economy.