Tata Motors demerger, Nov. 12 -- The demerged arm of Tata Motors, Tata Motors Commercial Vehicles (TMCV), made its stock market debut today.

Following the demerger, TMCV shares have begun trading under the name Tata Motors. At the same time, the passenger vehicles division continues to trade separately as Tata Motors Passenger Vehicles, effective from the record date of the merger.

On the NSE, TMCV shares opened at Rs.335 apiece, marking a 28.48% premium over their implied price of Rs.260.75 per share. On the BSE, the stock debuted at Rs.330.25 per share, up 26.09% from its implied value of Rs.261.90 per share.

Soon after listing, TMCV share price declined and was trading at a 3% discount to its listing price at Rs.324 on the NSE. On B...