Mahanagar Telephone Nigam Limited (MTNL), the sister telecom company of BSNL (Bharat Sanchar Nigam Limited), both of which are run by the government, is having a jolly day in the stock market on Friday. The company’s shares went up as much as 11% on Friday morning. At the time of writing, MTNL is trading for Rs 25.55, which is 7.3% in the green.