Shares of IRB Infra today bucked the weak trend due to $1.5-billion road contract.
The shares gained as much as 11 per cent.
The stock was among the top gainers in BSE large caps even as the 50-share NSE index fell 1 per cent.
Today is the biggest single day percentage gain since July 10, 2014; the stock has hit its highest intraday level since October 20.
The company has bagged a road project in Jammu and Kashmir worth Rs 10,050 crore($1.51 billion).
IRB Infra will receive semi-annual annuity of Rs 981 crore after the completion of construction.
($1 = 66.3800 Indian rupees)