Tracking global markets, the Bombay Stock Exchange benchmark Sensex fell 80 points in early trade on Thursday on massive selling by funds as well as investors.
The BSE-30 share index, Sensex, which had tumbled nearly 280 points in the previous session, fell by another 79.51 points at 14,176.42 in the first five minutes of the trade, following a significant decline in heavy-weight stock prices.
Similarly, the wide-based National Stock Exchange's index Nifty fell 67.75 points at 4,130.50.
Stock brokers said weakening global stock markets mainly dampened the trading sentiments in Mumbai, triggering all-round selling by funds as well as retail investors.
Most of the index-related stocks remained in negative zone with moderate to sizeable losses.