The stock gained 3.74 per cent to touch its one-year high of Rs 1,469.60 on BSE.
Similarly, shares of the company went up by 3.77 per cent to Rs 1,470 on NSE.
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The infrastructure giant yesterday reported 48.41 per cent jump in consolidated net profit at Rs 16.18 billion for the third quarter ended December 31, 2017.
It had posted a net profit of Rs 10.90 billion in October- December quarter in the year-ago period, L&T said in a filing to the BSE.
L&T's total income was up 9.03 per cent during the quarter under review at Rs 289.6 billion, against Rs 265.61 billion in the corresponding quarter.