Indian billionaire Adani's airport unit to raise up to $1 billion for expansion ↧ ↧ Indian billionaire Adani's airport unit to raise up to $1 billion f... Indian billionaire Gautam Adani's flagship firm Adani Enterprises said on Wednesday its airport unit will raise ​about $1 billion from investors, including Temasek and BlackRock , in an expansion ‌drive.