A SMALL US investor firm has challenged the Indian behemoth, the Adani group, and shaken it to its foundations. The Hindenburg Research, a short selling firm, brought out a 129-page report on the Adani group marshaling evidence of all the funding operations and offshore activities of the 578 subsidiaries and shell companies linked to the seven listed companies of the Adani group. The report states that this is the “biggest con in corporate history”. The report lays bare the complex network of funds and shell companies, some of them in Mauritius, Cyprus and UAE which have been used for man