The market breadth remained in the favour of bulls as 1,717 shares advanced compared to 601 declining and 100 remained unchanged.
Retail sales growth in China slumped heavily in August further, accentuating the slowdown in the Chinese economy, the latest economic data shows.
The overall market breadth was positive as 1,934 stocks advanced on the BSE, while 1,309 declined and 153 remained unchanged
Sensex settled at 58,247.09, up 69.33 points or 0.12%, while Nifty advanced 24.70 points or 0.14% to 17,380
After a muted listing the counter picked up the pace and was quoting at Rs 635 advancing Rs 104 or 20%.
At Rs 910 Ami Organics implies a valuation of 59.58 times P/E while its peers Aarti Industries and Hikal are trading at a P/E of 55.53 and 47.5 times.
On the BSE, Ami Organics opened at Rs 902, at a premium of Rs 292 or 47.87%.
HCL Tech, Axis Bank, Sun Pharma, Dr Reddy's ICICI Bank and Indusind Bank were the top gainers on the Sensex.
Advanced Enzymes products consisting of systemic enzyme and probiotic supplement have been tested for safety and efficacy on 200 patients.
Overall, market breadth was positive as 1,720 shares advanced on the BSE, while 1,543 declined and 205 remained unchanged