After the deal was announced early on Monday, markets were in an upbeat mood with sensex opening almost 1,200 points higher. It gained some more points in early trades and then as profit taking set in, it closed slightly off the intra-day high, but was still up 1%. The day’s gains made investors richer by almost 8.5 lakh crore with BSE’s market capitalisation now at Rs 470.5 lakh crore.