Let's say a stock was around 60 for a long time (1 year). Now all of a sudden it increases more than 15% in 2 days. Without any earnings result coming or good result anticipated by market and without any other news, the share price rises all of a sudden with a high increase in volumes. Can it be justified by some valid reasons or can it be operators in play?
Edit: Stock is GP petroleums Moneycontrol link