Shares in seven listed group companies of Adani lost $10.73 billion in market capitalisation in India on Wednesday after Hindenburg released the report, which accused the conglomerate of improper use of offshore tax havens and also said it held short positions in the company through its U.S.-traded bonds and non-Indian-traded derivative instruments.

"We are not invested long or short in any of the Adani companies... nor have we done our own independent research," Ackman said in a tweet.

(Reporting by Akriti Sharma in Bengaluru; Editing by Dhanya Ann Thoppil)