A day after a record-breaking run, stock prices continued to soar on Wednesday amid expectations of better-than-expected earnings by IT bellwether Infosys Technologies on Thursday.

Riding on the huge global liquidity wave, which is pouring into India after the last month's Fed rate cut, the Sensex extended its gains by 378 points, or 2.07 per cent, to end the day at 18,658. Broader S&P CNX Nifty galloped 114 points, or 2.14 per cent, to close at 5,441.

The 19,000-mark for the Sensex is now just 342 points away and may be achieved on Thursday if the software major is able to meet market expectations, say dealers.

Amitabh Chakraborty, president equity at Religare Securities pointed out that the dollar guidance of Infosys Technologies is likely to be revised upwards.

"We expect an overall 7.8 percent quarter-on-quarter growth in terms of revenue of Infosys [Get Quote] and a rise of 180 bps in the EBITDA margins," he said.