New Delhi, April 18 -- Benchmark indices Sensex and Nifty 50 extended their winning streak for the fourth straight session on Thursday, April 17, supported by broad-based buying and reduced concerns over the impact of the ongoing trade war on India's economy.

The Sensex surged 1,509 points, or 1.96%, to close at 78,553.20, while the Nifty 50 advanced 414 points, or 1.77%, to end at 23,851.65. However, mid and small-cap stocks lagged behind, with the BSE Midcap and Smallcap indices posting modest gains of 0.56% and 0.52%, respectively.

On the Nifty outlook, Vaishali Parekh, Vice President - Technical Research at Prabhudas Lilladher, said, "Nifty, witnessed another session of robust move having tremendous buying interest triggered among t...