The 30-share index ended higher by a robust 1,128 points - its best weekly gains in nearly two-and-a-half years - on strong buying momentum.
The NSE 50-share Nifty zoomed by a healthy 344.20 points, or 5.02 per cent, to end at 7,203.00 after hitting an all-time high of 7,563.50.
Shares of realty, PSU, power, refinery, metal, banking and consumer durable companies firmed up sharply on hopes that BJP Government would fast-track reforms and accelerate economic activity.
IT shares were at the receiving end following a sharp rise in the rupee value against the dollar. In the forex market, the Indian unit climbed to about 11-month high of 58.62 against the US currency.
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Sentiments were also boosted on account of strong capital inflows into the equity market. FIIs invested Rs 9,671.82 crore during the week, including the provisional figure of May 16.
The key BSE barometer succumbed to bouts of profit- booking, came off the 25,000 mark and ended the week at 24,121.74, showing a sharp gain of 1,127.51 points, or 4.90 per cent.
In the last week of November 2011, the Sensex had flared up by a staggering 1,151.40 points, or 7.34 per cent.