MUMBAI: The benchmark Sensex on Monday fell by over 170 points on frantic selling by funds in heavy-weight stocks, triggered by weakening global trend.

The Sensex, which has been in a bearish mode in the last few trading sessions, shed another 170.33 points to 18,737.27 after touching the day's low of 18,333.21 points.

The wide-based National Stock Exchange's Nifty fell by 46.15 points to 5,617.10. It touched the day's low of 5,477.50 and a high of 5,660.60 points.

Major pullers were stocks from realty, oil and gas, and information technology segments.