Markets have a firm start; Nifty reclaims 8,400: The markets have started the day's proceedings on a strong note amid the positive cues from the Asian front. At 9:20 am, the Sensex was at 27,813, stronger by 167 points or 0.6% and the Nifty was at 8,413, up 47 points. The broader markets are also equally strong, with the mid-cap and small-cap indices gaining around 0.6% each at 10,710 and 11,236 respectively. The rupee opened lower by 10 paise at 63.77 per dollar this morning as against 63.67 on Tuesday. The dollar continues to gain on unexpectedly better US April housing data.