Aarti Drugs has broken his previous 5-6 years of rang bound movement and finally, the up-trend seems to be resumed. It would be wise to wait for some pullback and then enter. I would be watchful at 875-880 levels to enter. (Refer daily chart, this level acts as a previous top)
Stock is volatile so stop loss can be kept on a closing basis or some additional risk can be taken since single day movements can be huge.