Mumbai, March 8 : The BSE Sensex on Tuesday bounced back 581.34 points to close at 53,424.09 owing to the strength of realty, technology, IT and health care stocks. The Nifty of National Stock Exchange (NSE) too rose 150.30 pts at 16,013.45. The Sensex registered days high and low at 53,484.26 and 52,260.82 respectively. The Nifty recorded days high and low at 16,028.75 and 15,671.45, respectively. NV GK