The sensex resumed lower at 20,857.01 and hovered in a range of 20,880.03 and 20,811.91 before quoting at 20,858.00 at 1030hrs, showing a decline of 32.82 points or 0.16 per cent from its last close.
The NSE 50-share Nifty also moved down by 16.10 points or 0.26 per cent to 6,187.25 at 1030 hrs.
Major losers were ICICI Bank (1.79 pct), ONGC (0.99 pct), Infosys (0.96 pct), Cipla (0.94 pct), HDFC Bank (0.90 pct) and L&T(0.89 pct).
Key benchmark indices in Taiwan, China, Japan, Indonesia and South Korea fell by 0.08 pct to 0.58 pct while indices in Hong Kong and Singapore rose 0.05 pct to 0.3 pct.
US stocks pulled back yesterday as investors showed caution after the Dow Jones Industrial Average and S&P 500 failed to hold above milestone levels in the prior session.
Meanwhile, foreign institutional investors (FIIs) bought shares worth a net Rs 1014.61 crs yesterday as per provisional data from the stock exchanges.