Shares of Mahanagar Telephone Nigam Ltd (MTNL) surged 18.4% in early trade on the BSE, hitting the day's high of Rs 51.30 on Thursday, March 13. The rally followed the company's earnings of Rs 2,134.61 crore from the monetization of land and building assets, as disclosed by Minister of State for Communications Pemmasani Chandra Sekhar in Lok Sabha.