ALBAWABA — Shares prices of companies in India's Adani Group on Friday extended losses to over $50 billion days after corporate fraud allegations sucker punched the group. United States-based Hindenburg Research, an investment research firm with a focus on activist short-selling, published its 100-page two-year investigation report into the group's business practices on Jan. 24, accusing it of “brazen stock manipulation and accounting fraud scheme over the course of decades” ...