The benchmark index resumed opened 200 points up and gradually moved upwards to regain 28,000-mark before closing at 27,975.86, a rise of 517.22 points or 1.88 per cent, with almost all the 30 index shares ending with gains.
The previous best one-day gain was on January 20 when the Sensex had rallied by 522.66 points.
The rally was across-the-board with 12 sectoral indices settling in the positive range of 0.47 per cent and 2.82 per cent.
"Firm global cues combined with oversold positions in index majors triggered the rebound initially, which further accelerated following noticeable buying interest," said Jayant Manglik, President, Retail Distribution, Religare Securities.
Bharti Airtel was the top gainer with a rise of 3.55 per cent, followed by HDFC 3.52 per cent, ONGC 3.49 per cent, ITC 3.41 per cent and Coal India 3.27 per cent.
"All the sectors ended in green and the major gainers for the day were Capital goods and Realty which closed up around 2.91 per cent and 2.30 per cent, respectively," said Head Research, Geojit BNP Paribas Financial Services.
As the financial year is coming to an end, markets opened for the day on a bullish note and remained strong throughout the day's trading session. Among day's major market moving events, surge in US technology shares overnight helped equities bounce back, said Rakesh Goyal, Senior Vice President, Bonanza Portfolio.
Small-cap and mid-cap counters too attracted heavy buying interest from retail investors as their indices outperformed the Sensex.
Reduction in crude prices and improvement in F&O liquidity, post a poor March expiry (-7% return) provided essential, said Vinod Nair, Head-Fundamental Research, Geojit BNP Paribas Financial Services.
