Sensex opens by 58 points
The 30-share barometer, which had gained 427 points in the previous two sessions, fell by 58.35 points to 18,390.78 points.
The wide-based National Stock Exchange index Nifty declined by 12.70 points to 5,514.05 points.
Brokers said profit booking by investors after two days of gain mainly influenced the trading sentiment.
Stocks selling was more confined to realty and auto sectors, they added.