Mumbai: The Sensex soared by a hefty 4.77 per cent, smashing all previous records to end the week at 6322.76 after scaling historic intra-trade peak, driven by sustained pouring of funds by foreign institutional investors.

Euphoric over robust economic fundamentals as well as the Government's commitment to the reforms process and strong corporate performance, FIIs pumped in Rs 2700.40 crore in the first four days of the week.

In the week to Dec 4, the BSE benchmark 30-share index saw high volatility fluctuating in range of 6361.53 and 6029.82 before ending the week at 6322.76 as against last weekend's close of 6035.03, a net rise of 287.73 points - the largest weekly rise in terms of points in this calendar year.

The Sensex also broke the historic intra-day high of 6249.60 touched on Jan 9, 2004, and rallied sharply to the new record high of 6361.53 on December 1, 2004.

The BSE barometer also scaled all-time closing highs consecutively for three days beginning from Nov 30 and ended at the lifetime closing high of 6328.43 on Dec 2.

FIIs were so aggressive in purchases that continued profit sales made by domestic funds and investors failed to make any mark on the strongly bullish market.

Domestic mutual funds were sellers through out to the tune of Rs 391.78 crore.

The sentiment was well supported by falling oil prices. Global crude tumbled by 13.4 per cent in successive three days to $ 42.54 a barrel.

The declining oil prices led to a sharp rally in refinery shares.

PSU counters including banking stocks too registered huge gains.