New Delhi, Oct. 15 -- The Indian stock market witnessed strong buying in morning trade on Thursday, 15 October, with the benchmarks, the Sensex and the Nifty 50, jumping more than 1% each even as the mid- and small-cap segments remained lacklustre.

The 30-share pack jumped nearly 1,400 points, or almost 2%, to its intraday high of 74,144, while the Nifty 50 climbed nearly 400 points, or 1.7%, to its day's high of 23,001. On the other hand, the BSE 150 Midcap index and the BSE 250 Smallcap index dropped by up to 0.80% during the morning session.

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

Investors are turning to blue-chip stocks as valuations become more comfortable. The shift towards large-caps a...