BENGALURU - India's National Stock Exchange on Thursday placed Adani Enterprises, Adani Ports and Ambuja Cements under additional surveillance mechanism that will require 100% margin to trade in their shares.

The move by the stock exchange comes after a rout in the shares of the billionaire Gautam Adani's group companies in the aftermath of a scathing report by a U.S. short seller.

(Reporting by Nallur Sethuraman in Bengaluru; Editing by Dhanya Ann Thoppil)