"The company denies the rumour that it would be making a large investment into Idea as part of the transaction being contemplated," Grasim Industries informed BSE.
As on December, 2016 Grasim Industries has 4.75 per cent share in Idea Cellular.
According to Grasim, "regrettably" some of investors have raised concerns that to take the merger transaction between Idea and Vodafone forward, large investment would be made by Grasim into Idea Cellular.
"No such proposal is under evaluation by this board," the company said.
More From This Section
On January 30, Britain's Vodafone Group had said it is in talks to merge its Indian unit with Idea Cellular in an all-share deal to create the country's largest telecom operator to compete with Reliance Jio that has unleashed a fierce price war.
The merger of Vodafone -- the world's second-largest cellphone network operator -- with the Aditya Birla Group firm -- India's third-largest cellular operator would create a company with around 387 million users and form one of the largest telecoms companies in the world.