The project has been completed on 27 February 2016, more than 3 months prior to the scheduled completion date of 2 June 2016, the company said in a release.
With this, the company becomes entitled to receive semi annual (half yearly) annuity of Rs 64.3 crore each during the remaining 15 years of the concession period, the release added.
The stock opened at Rs 488 and touched a high of Rs 510. At 1:55pm, over 2,000 shares were traded on both the stock exchanges.