The bull run on Indian stock markets continued for the fourth successive trading session Wednesday as the sensitive index (Sensex) of the Bombay Stock Exchange scaled a new all-time high of 7,600 points.

The 52-point rise in the 30-share Sensex came on top of an 82-point gain Monday and 49 points Tuesday.

"It was quite a bull run today. Volumes were down significantly as the heavy downpour since yesterday (Tuesday) prevented several traders from reaching office. But the Sensex managed to scale a new peak," said an analyst with a leading brokerage.

"Obviously, the robust results reported by Reliance Industries, the encouraging economic outlook from the central bank and the positive signal sent out by the markets watchdog - all fuelled the bull run," he added.

The Reserve Bank of India (RBI) Tuesday said there are several domestic factors that indicate a confidently growing economy in a stable environment, adding that the domestic macroeconomic factors continued to be positive.

Soon after, the Securities and Exchange Board of India chairman M. Damodaran dismissed the notion that the equity markets were over-heated and said there was no need for concern as long as the stock markets did not outpace the economy.

Sentiments were also fired by the first quarter results for this fiscal announced by Reliance Industries, India's largest private sector company, which said its cash profit at $753 million was up 28 percent.

The company also reported a turnover of $4.569 billion for the quarter under review, showing an increase of 26 percent over the like quarter of last fiscal.

The Sensex opened the day at 7,559.76 points, compared with the previous day's close at 7,552.77 points. Midway during the trading session, it slipped to a low of 7,504.96 points, but gained strength to close higher at 7,605.03 points after touching the day's high of 7,620.37 points.

In the process, the Sensex closed 52.26 points or 0.69 percent higher than the previous day's close, 262.14 points or 3.57 percent higher than the previous week and 453.95 points or 6.35 percent higher than the past month.

The data released by the Mumbai bourse further showed that 17 stocks among the 30-share Sensex moved up, 12 others registered a decline, while one share remained unchanged.

Among the 30 Sensex stocks, HDFC Bank led the gainers, up 4.10 percent at Rs.703.05, followed by State Bank, up 3.57 percent at Rs.775.95, Wipro up 2.93 percent at Rs.728.35 and ICICI Bank up 2.93 percent at Rs.522.85.

Tata Iron and Steel led the losers, down 3.64 percent at Rs.375.40, followed by Grasim Industries, down 1.50 percent at Rs.1,160, Bharti Televenture, down 0.91 percent at Rs.272.95 and Bharat Heavy Electricals, down 0.62 percent at Rs.982.75.