Stock Market News: The 30-share Sensex and the Nifty 50 ended the session flat with a negative bias on July 22. The Sensex closed at 82,186.81, down by 13.53 points or 0.02 per cent. The Nifty finished at 25,060.9 down by 29.8 points or 0.12 per cent. The indices ended lower amid a decline in automotive stocks and financial services stocks.