Investors on D-Street have lost more than Rs 6 lakh crore in market capitalisation as both benchmark market equities plunged over six per cent. Some of the reasons behind Monday fall were global volatility due to the rapid spread of coronavirus, the massive plunge in global crude oil prices and the developments in the Yes Bank matter. Extending morning losses, BSE Sensex plunged 2,326.35 or 6.19% at 35,250.27 while NSE Nifty crashed 646.95 or 5.89% at 10,342.50 at around 1:22 pm in the afternoon. It was the biggest intraday fall for Sensex in absolute terms as all stocks in the 30-pack benchmark index traded in red due to a mix of above factors. Nifty, too, slipped below the 10,500-mark for the first time since December 2018.