The Bombay Stock Exchange or BSE's index Sensex on Monday touched a record high of 35,664. Nifty too hit a record high of 10,906.85. An Economic Times report said that a Rs 37,000 crore mega deal with HPCL lifted ONGC shares by 5 per cent. Another refiner Reliance Industries advanced nearly 2 per cent on healthy December quarter numbers. On January 17, Sensex hit 35,000 for the first time as IT stocks such as Infosys and private lenders such as ICICI Bank rallied amid broader value buying in the market. The NIFTY 50 index is National Stock Exchange's benchmark broad-based stock market index for the equity market. It represents the weighted average of 50 Indian company stocks in 12 sectors and is one of the two main stock indices used in India.