Since the NBFC crisis most NBFC's have been downgraded and getting a AAA rating from Crisil is HUGE for any company. This would reduce their cost of borrowing in a major way and would also increase demand for the stock among funds.
Long above 317.50. Stoplosses here would very... Short term - below 302 Investor - Below 287... (But start with a smaller allocation and keep adding as every resistance gets broken on the upside)