The markets ended flat on Friday with the RBI keeping key interest rates unchanged. Factoring the impact of second-wave, RBI reduced the FY22 GDP forecast from 10.5% to 9.5% and trimmed the inflation forecast from 5.2% to 5.1%. As expected, RBI kept its policy rates unchanged and reiterated its accommodative stance.The BSE Sensex ended at 52,100.05, down 132.38 points or 0.25%. The Nifty was at 15,670.25, down 20.10 points or 0.13%.