Mumbai: The BSE benchmark Sensex fell by over 33 points in opening trade on Tuesday as investors booked profits recorded in Monday's rally even as new data showed that infrastructure output growth rebounded in November.

The 30-share Sensex, which closed 232.05 points higher in the previous session, fell by 33.51 points, or 0.21 percent, to 15,937.24 in the first few minutes of trade today.

In a similar fashion, the wide-based National Stock Exchange Nifty Index shed 8.25 points, or 0.17 percent, to 4,770.75.

Brokers said profit-booking of Monday's gains by speculators was mainly responsible for the moderate fall in stock prices, but buying in select scrips following news that the output of key infrastructure sectors grew by 6.8 percent in November limited the losses.

However, the absence of cues from global markets, which are closed for the Christmas holidays, prompted participants to restrict their positions, they said.

Among the best-performing stocks in opening trade, Larsen and Toubro rose by 0.51 percent at Rs 1,031, BHEL by 0.25 percent to Rs 1,405.65 and BEML by 0.80 percent to Rs 473.05.