Burger King Gains After Credit Rating Upgrade From ICRA Shares of quick service restaurant chain operator Burger King rose as much as 4 per cent to hit an intraday high of Rs 132.60. Updated: April 06, 2021 12:13 pm IST Shares of quick service restaurant chain operator Burger King rose as much as 4 per cent to hit an intraday high of Rs 132.60 after the credit rating agency ICRA upgraded its credit rating to stable from negative. ICRA upgraded its outlook on long-term loan worth Rs 210 crore, long-term bank overdraft worth Rs 20 crore and short-term bank guarantee of Rs 10 crore to A2 from BBB+ and revised outlook from Negative to Stable.