New Delhi, April 17 -- The Indian stock market witnessed a healthy, all-round buying on Friday, 17 April, which helped the benchmark indices, the Sensex and the Nifty 50, extend gains for the second consecutive week.

The Sensex rose by 505 points, or 0.65%, to end at 78,493.54, while the NSE barometer Nifty 50 settled at 24,353.55, rising by 157 points, or 0.65%. The mid and small-cap segments outperformed. The Nifty Midcap 100 index rose 1.27%, while the Nifty Smallcap 100 index jumped 1.48%.

Investors earned about Rs.5 lakh crore in a single session as the overall market capitalisation of BSE-listed firms rose to nearly Rs.466 lakh crore from Rs.461 lakh crore in the previous session.

For the week, the Sensex and the Nifty rose by 1....