The 30-scrip S&P BSE Sensex attained its new closing peak of 24,363.05, up over 241 points.
The NSE's 50-issue CNX Nifty also spurted 60.55 points, or 0.84 per cent, to end at a new closing high of 7,263.55.
Both indices surpassed previous closing highs hit on Friday. In three days, they have gained above 2 per cent.
Stocks of power companies, led by 10.35 per cent surge in NTPC, were the star performers of the day. Bhel zoomed 16.94 per cent on signing a pact with Indonesian firm to set up a power plant. Coal India scrip galloped 12.73 per cent.
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Nineteen scrips out of the 30-share Sensex pack ended higher while 11 others finished lower.
Second-tier stocks attracted heavy buying interest from retail investors and notched handsome gains. The BSE Smallcap and BSE Midcap indices closed up 4.19 per cent and 5.82 per cent respectively, outperforming the Sensex's 1 per cent rise.
While the rising rupee cast its shadow on earnings of IT and Pharma sectors after the local currency surged to 11-month high against US dollar intra-day, rally in markets today was led by Power, Capital Goods, Realty, Metal and Oil shares.
Hopes of a stable and business-friendly government that will put growth back on track and kick-start reforms, is driving markets higher, brokers said.
Besides, a clutch of foreign brokerages like Nomura and Goldman Sachs have upgraded Sensex/Nifty targets, they added.