Stock market today, April 15 -- Frontline indices, the Sensex and the Nifty 50, jumped sharply as a fresh spell of buying engulfed most sectors in early deals on Wednesday, April 15.

The Sensex surged over 1,400 points, or nearly 2%, to an intraday high of 78,270, while the Nifty 50 jumped more than 400 points, or almost 2%, to the day's high of 24,281. The Nifty Midcap 100 and Smallcap 100 indices jumped more than 2% each.

Investors' wealth jumped by Rs.9 lakh crore as the cumulative market capitalisation of the firms listed on the BSE rose to Rs.458 lakh crore from Rs.449 lakh crore in the previous session.

Let's take a look at key factors behind the rise in the Indian stock market:

The market cheered the reports, suggesting the US ...