Shares of Jaipur-based private sector lender AU Small Finance Bank rose as much as 16.72 per cent, the most in over a year, to hit an intraday high of Rs 677.55 on the BSE a day after the Reserve Bank of India (RBI) approved reappointment of its managing director and CEO Sanjay Agarwal for a period of three years. The RBI also approved reappointment of Uttam Tibrewal as whole time director for a period of three years.