Shares of India’s Adani Enterprises sank 20% on Friday as a scathing report by a U.S. short seller triggered a rout in the conglomerate’s listed firms, casting doubts on how investors will respond to the company’s record $2.45 billion secondary offer. Seven listed companies of the Adani conglomerate – controlled by one of the world’s richest men Gautam Adani – have lost a combined $48 billion in market capitalisation since Wednesday, with U.S. bonds of Adani firms also falling after Hindenburg Research flagged concerns in a Jan. 24 report about debt levels and the use of tax havens.