The research houses have a reputation to doctor their reports as per their own requirement... if they want to Sell the Report would be Overweight and when they wish to Buy the Report wud be Underweight....
I distintctly remember when Himachal was at ~ 1800 anumber of reports were Overweight on it...
If you want to consider Pharma Sector then Biocon would be my First choice after that Sunpharma.
Sales growth in Biocon is highest among all pharma stocks and profit wise Dr. Reddy is no 1 now but if Biocon will keep increase their sales growth then one day it will overtake DRReDDY.