As the telecom sector is abuzz with the upcoming auction of fifth-generation or 5G telecom services including high-speed internet, the stocks in the sector are in action. The recent development of Adani Group bidding in the auction has caused a substantial stir as it would intensify competition in the enterprise services segment. Consequently, shares of Bharti Airtel were the biggest loser in the sector, losing 3 per cent in today’s trade. However, MTNL, ITI and Tejas Networks rallied on the bourses.