Telecom tower infrastructure company Bharti Infratel said Nettle Infrastructure Investments would buy about 21.63 percent of its stake from company's promoter Bharti Airtel Ltd.

In a disclosure filed with National Stock Exchange, Bharti Infratel said Nettle Infra Investments, a wholly-owned unit of Bharti Airtel, would acquire about 400 million shares on or after March 27.

Shares of Bharti Infratel rose as much as 1.34 percent in early trade on Tuesday to be among the top gainers on the broader Nifty 50 index.

(Reporting by Aby Jose Koilparambil in Bengaluru; Editing by Swati Bhat)