Indian equity trading has been volatile with a negative bias for quite some time. Over the last 10 trading sessions, the benchmark index, Sensex, has lost more than 3,000 points. From its 52-week high, the Sensex has dropped by 8.5%, while the BSE500 index has fallen by approximately 9%. However, within the BSE500 index, there are seven stocks that have experienced a decline of more than 50% from their 52-week high. Take a look. (Data Source: ACE Equity)