At 9.43 a.m, the Sensex was trading down 109.82 points or 0.32% at 34,082.83 with 15 components falling.
USA stocks fell last Friday as weakness in shares of banks and finance firms added to the political and trade tensions weighing on the market.
The Sensex touched a high of 34,341.46 points and a low of 33,899.34 points during the intra-day trade.
Besides, reflecting further improvement in the economic situation, industrial production grew by a healthy 7.1% in February while the key retail inflation slipped to a five-month low of 4.28% in March, official data showed on Thursday.
Last week, the Sensex ended with third consecutive weekly gain by a solid 565.68 points to conclude at 34,192.65, while the broader Nifty reclaimed to close above the key 10,400-level at 10,480.60.More news: Protests erupt in Armenia ahead of ex-president's 'appointment as PM'
Foreign portfolio investors (FPIs) and foreign institutional investors (FIIs) sold shares worth Rs 1,487.82 crore during the week, as per Sebi's record including the provisional figure of April 13, 2018. The stock was the biggest contributor to the losses on Sensex.
The broader markets too continued to rule firm as investors were seen enlarging their bets, lifting the small-cap index by 0.56 per cent and mid-cap index by 0.34 per cent.
Among other Asian markets, Hong Kong's Hang Seng shed 1.44 per cent, while Shanghai Composite Index was down 1.05 per cent in early trade.
This is published unedited from the PTI feed.