SenSex is Sensitive to Top 10 Stock Players. All are above Rs 30 Crores in terms of Total Capital Wealth. So Sensex will never go below 6500 Points even if both ICICI and Reliance report for bankruptcy! However if at once all Top 10 from BSE 30 report less than 10 Lakhs in Annual Turnover then there is a possiblity that Sensitive Stock Exchange will slip to 6500 points.
Remember than NSE Top 10 are doing well with companies such as Infosys, Welspun Gujarat, Tata Motors, Reliance Communications, LG Electronics INDIA, Samsung, Dell, Ambuja Cement, L&T Infotech, BCCI, BCCL, Times Group etc reporting Profits in Financial Balance Sheets.
So it is better to look at the overall Indian Market Scenaio rather than focus on BSE Sensex alone. Sensex gives a small picture of Mumbai's Financial Strength. NSE & NIFTY50 project a great picture of Indias Market & Financial Health in a broad picture.